|Publication number||US3479811 A|
|Publication date||Nov 25, 1969|
|Filing date||Nov 29, 1967|
|Priority date||Nov 29, 1967|
|Publication number||US 3479811 A, US 3479811A, US-A-3479811, US3479811 A, US3479811A|
|Inventors||Harold A Walters|
|Original Assignee||Dow Chemical Co|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (7), Referenced by (89), Classifications (36), Legal Events (2)|
|External Links: USPTO, USPTO Assignment, Espacenet|
Nov. 25, 1969 H. A. WALTERS 3,479,811
YARN AND METHOD OF MAKING THE SAME Filed Nov. 29, 1967 INVENTOR. Hora/0 4. W0 fleas nited States Patent 3,479,811 YARN AND METHOD 0r MAKING THE SAME Harold A. Walters, Beaverton, Mich, assignor to The Dow Chemical Company, Midland, Mich, a corporation of Delaware Filed Nov. 29, 1967, Ser. No. 686,656 Int. Cl. D02g 3/22, 3/36; 132% 7/20 US. Cl. 57-153 12 Claims ABSTRACT OF THE DISCLOSURE Expandable microspheres are incorporated in a thread or yarn, subsequently heated to expand the microspheres and bulk the yarn. Bulking of the yarn after weaving or sewing provides tightly woven fabric or locked-in sewing thread.
This invention relates to treated yarn and a method, and more particularly relates to the incorporation of expandable microspheres into textile yarns.
The bulking of yarns has been accomplished by various means. Fabrics have been impregnated with expanded and expandable microspheres. However, such impregnation is usually carried out after the weaving or other intertwining process has been completed. Oftentimes, it IS desirable that the yarns expand after being formed or incorporated into an article to provide what appears to be a tighter weave or otherwise secure and/ or interlock the yarn with its adjacent neighbors.
It would be advantageous if there were available a method and yarn which would form apparently relatively densely woven fabric without the necessity of weaving tightly.
It would also be beneficial if there were available a sewing thread which could be subsequently expanded after installation in a desired location.
It would also be desirable if there were avialable an improved method for bulking yarn.
These benefits and other advantages in accordance with the present invention are achieved by providing a yarn of a fibrous nature, impregnating the yarn with a dispersion containing expandable synthetic resinous microspheres which comprise a synthetic thermoplastic resinous wall and a distinct and separate liquid phase of a volatile expanding agent, subsequently disposing said microspheres within the yarn in a desired location, heating the yarn to a temperature sufiicient to cause expansion of the microspheres, thereby causing bulking of the yarn.
Also contemplated within the scope of the present invention is a yarn of a fibrous nature containing therein a plurality of synthetic resinous thermoplastic microspheres having a distinct and separate liquid phase therein, the microspheres being capable of expanding on heating to a diameter substantially greater than the original diameter of the microsphere.
Further features and advantages of the present invention will become more apparent from the following specication when taken in connection with the drawing wherein:
FIGURE 1 is a schematic enlarged representation of a yarn in accordance with the present invention.
FIGURE 2 is a schematic cross-sectional representation of a fabricated article in accordance with the invention.
FIGURE 3 is a schematic representation of a yarn having expanded microspheres therein.
In FIGURE 1 there is depicted a schematic representation of a yarn of a fibrous nature generally indicated by the reference numeral 10. The yarn 10 comprises a plurality of fibers or filaments 11 disposed in generally parallel adjacent relationship. A plurality of expandable syn- 3,479,811 Patented Nov. 25, 1969 'ice thetic resinous microspheres 12 are disposed in interstitial spaces 13 between the adjacent filaments 11. The microspheres 12 consist of a synthetic resinous thermoplastic hollow spherical shell containing a distinct and separate liquid phase of a blowing agent therein. Such expandable microspheres are well known in the art and are set forth in Belgian Patent 641,711.
In FIGURE 2 there is represented a schematic sectional view of a fabric 20 prepared from yarn in accordance with the present invention. The fabric 20 comprises a first set of generally parallel yarns 21 and a second set of generally parallel yarns 22 disposed generally in angular relationship to the set 21 and interwoven therewith. The dotted lines indicate the configuration of the yarns 21 and 22 after being subjected to heat sufiicient to cause the microspheres contained within the filaments to expand.
In FIGURE 3 there is depicted a portion of an expanded yarn 25 which has been removed from a fabric structure after expansion of the yarn. The yarn 25 has unexpanded or locking portions 26 and 27 arising from mechanical restraint during microspheres expansion.
A wide variety of yarns may be employed in the practice of the present invention such as threads, cordage and the like prepared from cotton, silk, jute, sisal, hemp, linen and wool, as Well as synthetics such as vinylidene chloride polymer multifilament, nylon, polyacrylonitrile, polyethylene, terephthalate, polypropylene, polyvinyl chloride, viscose rayon and blends of natural fibers, synthetic fibers as well as blends of natural and synthetic fibers.
It is critical to the present invention that the yarn define accessible void spaces between the fibers or filaments and be capable of expansion; that is, separation of the fibers or filaments sufiicient to admit microspheres into the interstitial spaces. Most yarns meet these requirements. A few yarns have been treated with a coating or bonding material or by heat treatment to a degree sufiicient to prevent such expansion. A wide variety of expandable microspheres are known and described in Belgian Patent 641,711. Generally, the particular nature of the microsphere is not critical. However, it is generally desirable to select a heat expanding microsphere having a composition which permits expansion at a temperature appropriate to the yarn employed; that is, one should not employ a microsphere which expands at a temperature above a temperature at which the strength or quality of the yarn or thread being treated is impaired such as by de-orientation, shrinkage, embrittlement or the like.
Oftentimes it is desirable to apply the microspheres to the yarn in combination with an adhesive material which promotes adhesion of the microspheres in the unexpanded form and subsequently in the expanded form to the surface of the fibers or filaments making up the yarn. Such adhesives or binders are well known and some are described in Belgian Patent 641,711. If, due to the particular nature of the yarn, an adhesive or binder is required, it is essential that one that is employed be inert to the expandable microspheres; that is, the binder must not destroy the structure of the microsphere. Typical binders or adhesives which are employed are synthetic resinous latexes or colloidal dispersions which are film forming at temperatures at which the microspheres initially start to expand to temperatures well below ambient temperatures. The particular adhesive employed will depend on the yarn, the characteristics required in the finished yarn such as friction, stiffness and the like. Selection of such adhesives is well within the skill of the art. Film forming synthetic resinous dispersions, such as polymers of styrene and butadiene such as a polymer of 70 parts by weight styrene and 30 parts by weight butadiene, are eminently satisfactory for many purposes, as are film forming vinylidene chlo-' ride polymers in aqueous colloidal dispersion such as a polymer of 85 weight percent vinylidene chloride and 15 weight percent acrylonitrile; water-soluble synthetic resins such as polyacrylic acid; water or alcohol soluble resins such as hydroxypropyl methyl cellulose; thermosetting resins such as the epoxy resins and the like. Beneficially in many instances, the addition of an adhesive may be omitted particularly with sized synthetic resinous yarns which have outer surfaces coated with a resin which softens or becomes tacky at temperatures of about 100 to 125 C., such as a polymer of 72 weight percent ethylene and 28 weight percent acrylic acid.
Beneficially in the practice of the present invention, the expandable synthetic resinous microspheres may be incorporated Within the yarn by a variety of techniques including immersion of the yarn in a liquid suspension of expandable microspheres. Beneficially, a tow of such yarns is impregnated by spraying, dipping, rolling, brushing or other conventional liquid-applying means. One particularly advantageous method of preparing a yarn impregnated with expandable microspheres is to pass the yarn to be coated through a bath and subsequently doctor the excess material therefrom by means of a perforated rubber diaphragm.
By way of further illustration, a polymerization re actor equipped with an agitator is charged with 100 parts of deionized water and 15 parts of a 30 weight percent colloidal silica dispersion in water. The colloidal silica dispersion is 30 weight percent solids and available under the trade name of Ludox HS. To this mixture is added 2.5 parts of a 10 weight percent aqueous solution of a copolymer prepared from diethanol amine and adipic acid in equimolar proportions by carrying out a condensation: reaction to give a product having a viscosity of about 100 centipoises at 25 C. One part of a solution containing 2.5 weight percent potassium dichromate is added. The pH of the aqueous solution is adjusted to 4 with hydrochloric acid. A methyl methacrylate and acrylonitrile mixture is utilized as the monomer in a proportion of 4:1, respectively. An oil phase mixture is prepared utilizing 100 parts of the foregoing monomer mixture and containing 35 weight percent neopentane and 0.1 part of benzoyl peroxide as a catalyst. The oil phase mixture is added to the water phase with violent agitation supplied by a blade rotating at a speed of about 10,000 revolutions per minute. The reactor is immediately sealed and a portion of the contents sampled to determine the particle size. The droplets appear to have diameters of from about 2 to about 10 microns. After the initial dispersion, the reaction mixture is maintained at a temperature of about 80 C. for a period of 24 hours. At the end of this period, the temperature is lowered and the reaction mixture has the appearance of a white, milky liquid similar to a chalkwhite milk. A portion of the mixture is filtered to remove the beads and the beads subsequently dried in an air oven at a temperature of about 30 C. A portion of the dried beads are heated in an air oven at a temperature of 150 C. for about 3 minutes. Upon heating, the beads show a marked increase in volume. Microscpoic examination of the beads prior to foaming indicates beads having diameters of from about 2 to about 10 microns and having dispersed therein a distinct spherical zone which appears to contain liquid and a small Vapor space. The beads which have been heated are examined micro scopically and are found to have diameters of from about 2 to times the diamter of the original bead and a relatively thin, transparent wall and a gaseous center, i.e., a monocell. The remaining portion of the chalk-White material is filtered to provide a wet'filter cake containing about 29.6 Weight percent expandable microspheres. A coating mixture is prepared by admixing 81.1 parts by weight of a polymer latex of 60 weight percent styrene and 40 weight percent butadiene which is 49.3 weight percent solids, 2.7 parts by weight of a 25 weight percent aqueous solution of sodium dodecyl diphenyl oxide disulfonate, 207 parts by weight of water and 16.2 parts by weight of a 5 weight percent aqueous solution of a thickening agent commercially available under the trade designation of Acrysol GS. The coating solution is then applied to a plurality of yarns by immersing the yarns and doctoring olf excess coating material by drawing through an opening formed by perforating a thin rubber diaphragm with a needle. The coated yarn is air-dried at a temperature of about 60 C. Portions of the thread are subsequently formed by heating in an air oven at 135 C. The yarns employed and the results are as follows:
YARN 1 A No. 40 cotton thread is coated with a dry coating weight of 0.0846 gram per 10 feet and after expansion increases to about twice its original diameter.
YARN 2 A No. 50 cotton thread is coated with a dry coating weight of 0.0534 gram per 10 feet and after expansion increases to about twice its original diameter.
YARN 3 A sized silk thread manufactured by Belding and Corticelli is coated with a dry coating weight of 0.1336 gram per 10 feet and after expansion increases to about 50 percent of its original diameter with a substantial increase in thickness.
YARN 4 A nylon thread designated as Coats and Clark Taslan textured nylon thread is coated with a dry coating weight of 0.042 gram per 10 feet and after expansion of the microspheres shows localized areas of individual fibers curled and standing out from the body of the thread.
YARN 5 Coats and Clark No. 333 wool yarn requires a dry coating weight of 0.0289 gram per 10 feet and on expansion increases its diameter about 2.5 times.
Other foamable microsphere coating compositions are prepared as follows:
COMPOSITION A 106.6 parts by weight of expandable microspheres having a polymer shell which is a polymer of weight percent vinylidene chloride and 20 weight percent acrylo nitrile containing 35 weight percent neopentane based on the combined weight of polymer and neopentane, the filter cake containing 25 weight percent Water, parts by weight of water, 40 parts by weight of a 60-40 copolymer of styrene and butadiene latex, 50 Weight percent solids, 78.3 parts by weight of a 5 weight percent solution of the sodium salt of polyacrylic acid.
COMPOSITION C Ninety parts by weight of a wet filter cake of expandable microspheres having a polymer shell of 60 weight percent styrene and 40 weight percent acrylonitrile copolymer containing 35 weight percent neopentane based on the combined weight of the polymer and neopentane and 25 parts by weight water, 103 parts by weight water, 60.4 parts by weight of an aqueous latex, 50 percent solids of a polymer of 85 weight percent vinyl chloride, weight percent butyl acrylate and 5 weight percent acylic acid, 10 parts by weight of a 10 weight percent solution of hydroxyethyl cellulose.
COMPOSITION D Ninety-four parts by weight of a wet filter cake of expandable microspheres having a polymer shell of 80 weight percent methyl methacrylate and weight percent methyl acrylate and weight percent neopentane based on the combined weight of the neopentane and the copolymer and 25 weight percent water, 100 parts by weight water, parts by weight of a weight percent solids latex of a polymer of weight percent styrene and 40 weight percent butadiene, 78.3 parts by weight of a 5 Weight percent aqueous solution of the sodium salt of polyacrylic acid.
Similar beneficial and advantageous results are obtained when cotton, silk, wool and nylon threads are coated With compositions A, B, C, and D. Use of coated or impregnated threads prepared in accordance with the present invention is susceptible of being embodied with 1y heated to a temperature sufficient to cause expansion, substantially eliminates the need for knotting or tying of the thread at either end thereof, as after heating the thread to cause expansion, it is difiicult to remove the thread from a woven fabric. Similar advantages are achieved when expandable thread of the present invention is employed for attaching buttons. Fabric woven from the expandable yarns prepared in accordance with the present invention and heat treated to expand the microspheres provides a dense-appearing fabric much tighter than original weave and with significant antiravelling properties.
As is apparent from the foregoing specification, the present invention is susceptible of being embodied with various alterations and modifications which may differ particularly from those that have been described in the preceding specification and description. For this reason, it is to be fully understood that all of the foregoing is intended to be merely illustrative and is not to be construed or interpreted as being restrictive or otherwise limiting of the present invention.
What is claimed is:
1. A method of providing a bulked yarn of a fibrous nature comprising providing a yarn,
impregnating the yarn with a dispersion containing synthetic resinous microspheres, the microspheres comprising a synthetic thermoplastic resinous wall and a distinct and separate liquid phase of a volatile expanding agent which is a non-solvent for the resinous wall, subsequently disposing said microspheres within the yarn in a desired location,
heating the yarn to a temperature sufiicient to cause expansion of the microspheres, thereby causing bulking of the yarn.
2. The method of claim 1 wherein the microspheres are disposed within the yarn by dispersion from a liquid suspension of microspheres.
3. The method of claim 2 including the step of incorporating an adhesive material within the microsphere dispersion.
4. The method of claim 3 including the step of removing the liquid of the dispersion from the yarn prior to heating of the yarn.
5. The method of claim 1 including the step of intertwining the yarn with a plurality of yarns prior to the expansion thereof.
6. The method of claim 5 wherein the intertwining of the yarn is accomplished by weaving.
7. An improved textile yarn of a generally parallel fibrous nature, the yarn containing dispersed therethrough a plurality of synthetic resinous thermoplastic microspheres having a distinct and separate liquid phase therein, the microspheres being capable of expanding on heating to a diameter substantially greater than the original diameter of the microspheres and thereby bulking the yarn.
8. The filament of claim 7 intertwined with a plurality of like yarns.
9. The filament of claim 8 wherein the yarn is cotton.
10. The yarn of claim 8 wherein the yarn is silk.
11. The yarn of claim 8 wherein the yarn is nylon.
12. The yarn of claim 8 including an adhesive binding the microspheres to the yarn.
References Cited UNITED STATES PATENTS 2,744,291 5/1956 Stastny et al. 264-53 2,815,559 12/1957 Robinson 57164 XR 2,940,871 6/1960 Smith-Johannsen 117-138.8 3,100,926 8/1963 Richmond 28--75 3,154,604 10/1964 McMillan 264-53 XR 3,359,130 12/1967 Goldman 264-53 XR 3,372,215 3/1968 Muirhead et al. 264-53 MERVIN STEIN, Primary Examiner WERNER H. SCHROEDER, Assistant Examiner US. Cl. X.R.
|Cited Patent||Filing date||Publication date||Applicant||Title|
|US2744291 *||Apr 16, 1952||May 8, 1956||Basf Ag||Production of porous shaped articles from thermoplastic materials|
|US2815559 *||Aug 3, 1953||Dec 10, 1957||Robinson Thread Company||Cellular synthetic fibre thread and a method of making the same|
|US2940871 *||Aug 5, 1955||Jun 14, 1960||S J Chemical Company||Composition and method of making microporous products|
|US3100926 *||Jun 28, 1960||Aug 20, 1963||Electric Storage Battery Co||Method of producing expanded fabric-like material|
|US3154604 *||Mar 19, 1956||Oct 27, 1964||Dow Chemical Co||Method for forming articles comprising expanded thermoplastic resinous materials|
|US3359130 *||Nov 12, 1963||Dec 19, 1967||Papex Corp||Double shelled foamable plastic particles|
|US3372215 *||Mar 16, 1966||Mar 5, 1968||Shell Oil Co||Production of expandable polymer particles|
|Citing Patent||Filing date||Publication date||Applicant||Title|
|US3936335 *||Nov 1, 1974||Feb 3, 1976||Scientific Anglers, Inc.||Process for producing a buoyant fishing line|
|US5205290 *||Apr 5, 1991||Apr 27, 1993||Unger Evan C||Low density microspheres and their use as contrast agents for computed tomography|
|US5277957 *||Sep 9, 1991||Jan 11, 1994||Orcon Corporation||Film reinforced with yarn coated with hot melt adhesive|
|US5281408 *||Jan 19, 1993||Jan 25, 1994||Unger Evan C||Low density microspheres and their use as contrast agents for computed tomography|
|US5334418 *||Sep 3, 1993||Aug 2, 1994||Reeves Brothers, Inc.||Compressible fabric substrate|
|US5364683 *||Feb 14, 1992||Nov 15, 1994||Reeves Brothers, Inc.||Compressible printing blanket and method of making same|
|US5441813 *||Aug 16, 1994||Aug 15, 1995||Sumitomo Electric Industries, Ltd.||Communication line material|
|US5456900 *||Sep 7, 1993||Oct 10, 1995||Unger; Evan C.||Low density microspheres and their use as contrast agents for computed tomography|
|US5486402 *||Oct 12, 1994||Jan 23, 1996||Reeves Brothers, Inc.||Printing blanket having printing face surface profile within specified roughness range|
|US5527521 *||Jun 1, 1995||Jun 18, 1996||Imarx Pharmaceutical Corp.||Low density microspheres and suspensions and their use as contrast agents for computed tomography and in other applications|
|US5547656 *||May 24, 1995||Aug 20, 1996||Imarx Pharmaceutical Corp.||Low density microspheres and their use as contrast agents for computed tomography, and in other applications|
|US5549968 *||Mar 8, 1994||Aug 27, 1996||Reeves Brothers, Inc.||Compressible fabric substrate|
|US5562985 *||Jun 1, 1995||Oct 8, 1996||Sumitomo Electric Industries, Ltd.||Communication line material|
|US5733572 *||Nov 29, 1994||Mar 31, 1998||Imarx Pharmaceutical Corp.||Gas and gaseous precursor filled microspheres as topical and subcutaneous delivery vehicles|
|US5736121 *||May 19, 1995||Apr 7, 1998||Imarx Pharmaceutical Corp.||Stabilized homogenous suspensions as computed tomography contrast agents|
|US5769080 *||Feb 22, 1994||Jun 23, 1998||Dupont Merck Pharmaceutical Company||Gas filled liposomes and stabilized gas bubbles and their use as ultrasonic contrast agents|
|US5770222 *||Jun 7, 1995||Jun 23, 1998||Imarx Pharmaceutical Corp.||Therapeutic drug delivery systems|
|US5776429 *||Apr 30, 1996||Jul 7, 1998||Imarx Pharmaceutical Corp.||Method of preparing gas-filled microspheres using a lyophilized lipids|
|US5830430 *||Feb 21, 1995||Nov 3, 1998||Imarx Pharmaceutical Corp.||Cationic lipids and the use thereof|
|US5846517 *||Jan 30, 1997||Dec 8, 1998||Imarx Pharmaceutical Corp.||Methods for diagnostic imaging using a renal contrast agent and a vasodilator|
|US5853752 *||Jun 6, 1995||Dec 29, 1998||Imarx Pharmaceutical Corp.||Methods of preparing gas and gaseous precursor-filled microspheres|
|US5874062 *||May 19, 1995||Feb 23, 1999||Imarx Pharmaceutical Corp.||Methods of computed tomography using perfluorocarbon gaseous filled microspheres as contrast agents|
|US5922304 *||Mar 9, 1995||Jul 13, 1999||Imarx Pharmaceutical Corp.||Gaseous precursor filled microspheres as magnetic resonance imaging contrast agents|
|US5985246 *||Jul 8, 1997||Nov 16, 1999||Imarx Pharmaceutical Corp.||Contrast agents for ultrasonic imaging and methods for preparing the same|
|US5997898 *||Jun 6, 1995||Dec 7, 1999||Imarx Pharmaceutical Corp.||Stabilized compositions of fluorinated amphiphiles for methods of therapeutic delivery|
|US6001335 *||Jun 18, 1996||Dec 14, 1999||Imarx Pharmaceutical Corp.||Contrasting agents for ultrasonic imaging and methods for preparing the same|
|US6028066 *||Jul 2, 1997||Feb 22, 2000||Imarx Pharmaceutical Corp.||Prodrugs comprising fluorinated amphiphiles|
|US6033645 *||Jun 19, 1996||Mar 7, 2000||Unger; Evan C.||Methods for diagnostic imaging by regulating the administration rate of a contrast agent|
|US6033646 *||Feb 19, 1998||Mar 7, 2000||Imarx Pharmaceutical Corp.||Method of preparing fluorinated gas microspheres|
|US6039557 *||Apr 7, 1997||Mar 21, 2000||Imarx Pharmaceutical Corp.||Apparatus for making gas-filled vesicles of optimal size|
|US6056938 *||May 5, 1998||May 2, 2000||Imarx Pharaceutical Corp.||Cationic lipids and the use thereof|
|US6071494 *||Aug 28, 1998||Jun 6, 2000||Imarx Pharmaceutical Corp.||Methods for diagnostic imaging using a contrast agent and a renal vasodilator|
|US6071495 *||Oct 2, 1997||Jun 6, 2000||Imarx Pharmaceutical Corp.||Targeted gas and gaseous precursor-filled liposomes|
|US6071567 *||Mar 25, 1992||Jun 6, 2000||Reeves Brothers, Inc.||Formation of compressible ply containing high melting point thermoplastic microspheres and printing blankets comprising same|
|US6088613 *||Jun 7, 1995||Jul 11, 2000||Imarx Pharmaceutical Corp.||Method of magnetic resonance focused surgical and therapeutic ultrasound|
|US6090800 *||May 6, 1997||Jul 18, 2000||Imarx Pharmaceutical Corp.||Lipid soluble steroid prodrugs|
|US6117414 *||Nov 10, 1997||Sep 12, 2000||Imarx Pharmaceutical Corp.||Method of computed tomography using fluorinated gas-filled lipid microspheres as contract agents|
|US6120751 *||Sep 8, 1997||Sep 19, 2000||Imarx Pharmaceutical Corp.||Charged lipids and uses for the same|
|US6123923 *||Dec 18, 1997||Sep 26, 2000||Imarx Pharmaceutical Corp.||Optoacoustic contrast agents and methods for their use|
|US6139819 *||Sep 17, 1997||Oct 31, 2000||Imarx Pharmaceutical Corp.||Targeted contrast agents for diagnostic and therapeutic use|
|US6143276 *||Mar 21, 1997||Nov 7, 2000||Imarx Pharmaceutical Corp.||Methods for delivering bioactive agents to regions of elevated temperatures|
|US6146657 *||Nov 1, 1996||Nov 14, 2000||Imarx Pharmaceutical Corp.||Gas-filled lipid spheres for use in diagnostic and therapeutic applications|
|US6231834||Dec 2, 1997||May 15, 2001||Imarx Pharmaceutical Corp.||Methods for ultrasound imaging involving the use of a contrast agent and multiple images and processing of same|
|US6248274||Sep 21, 1999||Jun 19, 2001||Playtex Products, Inc.||Method of manufacturing a catamenial/tampon device|
|US6287638||Nov 23, 1999||Sep 11, 2001||Reeves Brothers, Inc.||Formation of compressible ply containing high melting point thermoplastic microspheres and printing blankets comprising same|
|US6315981||Mar 19, 1999||Nov 13, 2001||Imarx Therapeutics, Inc.||Gas filled microspheres as magnetic resonance imaging contrast agents|
|US6403056||Mar 31, 2000||Jun 11, 2002||Imarx Therapeutics, Inc.||Method for delivering bioactive agents using cochleates|
|US6414139||Sep 3, 1996||Jul 2, 2002||Imarx Therapeutics, Inc.||Silicon amphiphilic compounds and the use thereof|
|US6416740||May 11, 1998||Jul 9, 2002||Bristol-Myers Squibb Medical Imaging, Inc.||Acoustically active drug delivery systems|
|US6443898||Jun 7, 1995||Sep 3, 2002||Imarx Pharmaceutical Corp.||Therapeutic delivery systems|
|US6444660||Feb 3, 2000||Sep 3, 2002||Imarx Therapeutics, Inc.||Lipid soluble steroid prodrugs|
|US6461586||Jul 10, 2000||Oct 8, 2002||Imarx Therapeutics, Inc.||Method of magnetic resonance focused surgical and therapeutic ultrasound|
|US6479034||Jul 17, 1998||Nov 12, 2002||Bristol-Myers Squibb Medical Imaging, Inc.||Method of preparing gas and gaseous precursor-filled microspheres|
|US6521211||Feb 3, 1999||Feb 18, 2003||Bristol-Myers Squibb Medical Imaging, Inc.||Methods of imaging and treatment with targeted compositions|
|US6528039||Jun 18, 1997||Mar 4, 2003||Bristol-Myers Squibb Medical Imaging, Inc.||Low density microspheres and their use as contrast agents for computed tomography and in other applications|
|US6537246||Jun 18, 1997||Mar 25, 2003||Imarx Therapeutics, Inc.||Oxygen delivery agents and uses for the same|
|US6548047||Sep 15, 1997||Apr 15, 2003||Bristol-Myers Squibb Medical Imaging, Inc.||Thermal preactivation of gaseous precursor filled compositions|
|US6551576||Mar 31, 1998||Apr 22, 2003||Bristol-Myers Squibb Medical Imaging, Inc.||Container with multi-phase composition for use in diagnostic and therapeutic applications|
|US6576220||May 10, 2001||Jun 10, 2003||Imarx Therapeutics, Inc.||Non-invasive methods for surgery in the vasculature|
|US6635205||Jun 11, 2001||Oct 21, 2003||Playtex Products, Inc.||Method of manufacturing a catamenial/tampon device|
|US6638767||Dec 21, 2000||Oct 28, 2003||Imarx Pharmaceutical Corporation||Methods for delivering compounds into a cell|
|US6688226||Oct 3, 2001||Feb 10, 2004||Erminio Rossini, S.P.A.||Sleeve for blanket cylinder of an indirect or offset printing machine and method of making said sleeve|
|US6716412||Mar 21, 2001||Apr 6, 2004||Imarx Therapeutics, Inc.||Methods of ultrasound treatment using gas or gaseous precursor-filled compositions|
|US6743779||Apr 29, 1997||Jun 1, 2004||Imarx Pharmaceutical Corp.||Methods for delivering compounds into a cell|
|US6773696||Oct 25, 2002||Aug 10, 2004||Bristol-Myers Squibb Medical Imaging, Inc.||Contrast agent comprising low density microspheres|
|US6808720||Jan 15, 2002||Oct 26, 2004||Imarx Therapeutics, Inc.||Charged lipids and uses for the same|
|US6884407||May 18, 2000||Apr 26, 2005||Bristol-Myers Squibb Pharma Company||Methods for diagnostic imaging involving the use of a contrast agent and a coronary vasodilator|
|US6998107||Jun 10, 2004||Feb 14, 2006||Bristol-Myers Squibb Pharma Comapany||Composition comprising low density microspheres|
|US7078015||Nov 8, 2004||Jul 18, 2006||Imarx Therapeutics, Inc.||Ultrasound imaging and treatment|
|US7083572||Mar 26, 2002||Aug 1, 2006||Bristol-Myers Squibb Medical Imaging, Inc.||Therapeutic delivery systems|
|US7105151||Jan 6, 2003||Sep 12, 2006||Imarx Therapeutics, Inc.||Oxygen delivery agents and uses for the same|
|US7329402||Jan 13, 2003||Feb 12, 2008||Imarx Pharmaceutical Corp.||Methods of imaging and treatment|
|US7344705||Oct 18, 2005||Mar 18, 2008||Bristol-Myers Squibb Medical Imaging, Inc.||Composition comprising low density microspheres|
|US7452551||Oct 30, 2000||Nov 18, 2008||Imarx Therapeutics, Inc.||Targeted compositions for diagnostic and therapeutic use|
|US7612033||Mar 18, 2004||Nov 3, 2009||Imarx Pharmaceutical Corp.||Methods for delivering compounds into a cell|
|US7780875||Jan 13, 2006||Aug 24, 2010||Cinvention Ag||Composite materials containing carbon nanoparticles|
|US8084056||Sep 22, 2003||Dec 27, 2011||Lantheus Medical Imaging, Inc.||Preparation of a lipid blend and a phospholipid suspension containing the lipid blend|
|US8658205||Aug 1, 2011||Feb 25, 2014||Lantheus Medical Imaging, Inc.||Preparation of a lipid blend and a phospholipid suspension containing the lipid blend|
|US8685441||Jul 23, 2013||Apr 1, 2014||Lantheus Medical Imaging, Inc.||Preparation of a lipid blend and a phospholipid suspension containing the lipid blend|
|US8747892||Jul 25, 2013||Jun 10, 2014||Lantheus Medical Imaging, Inc.||Preparation of a lipid blend and a phospholipid suspension containing the lipid blend|
|US20050262646 *||May 27, 2005||Dec 1, 2005||Mathias Berlinger||Process for depositing microcapsules into multifilament yarn and the products produced|
|US20060063452 *||Nov 9, 2005||Mar 23, 2006||Moore Steven C||Adhesive coated sewing thread|
|US20070088114 *||Oct 18, 2006||Apr 19, 2007||Blue Membranes Gmbh||Thermoset particles and methods for production thereof|
|US20080213611 *||Jan 18, 2008||Sep 4, 2008||Cinvention Ag||Porous, non-degradable implant made by powder molding|
|CN102493061A *||Dec 6, 2011||Jun 13, 2012||江苏紫荆花纺织科技股份有限公司||Blended yarn of jute fiber, cotton fiber and wool fiber and application of blended yarn|
|DE10104585A1 *||Feb 1, 2001||Aug 14, 2002||Verseidag Indutex Gmbh||Schutzelement gegen ballistische Einwirkungen|
|EP0672883A1 *||Feb 28, 1995||Sep 20, 1995||Niltar Trading S.A.||Antitrauma packet|
|EP1423568A1 *||Aug 1, 2002||Jun 2, 2004||Coating Innovations Pty. Limited||Alternative to viscose flocking|
|EP1609896A2||May 31, 2005||Dec 28, 2005||Mathias Berlinger||Process for depositing microcapsules into multifilament yarn and the products produced|
|U.S. Classification||57/258, 57/351, 521/139, 521/56, 521/59, 57/297, 264/53, 521/140, 57/246, 521/134, 28/166, 57/250|
|International Classification||D03D15/00, D02G1/00, D02G3/40|
|Cooperative Classification||D10B2331/04, D10B2331/02, D10B2201/04, D10B2401/041, D10B2321/022, D03D15/00, D03D2700/014, D10B2321/041, D10B2401/08, D10B2201/02, D10B2201/06, D10B2211/04, D10B2321/10, D03D15/0027, D02G1/00, D02G3/40, D10B2201/24|
|European Classification||D03D15/00, D03D15/00E, D02G1/00, D02G3/40|
|Jun 30, 1987||AS||Assignment|
Owner name: CASCO NOBEL AB, P.O. BOX 11010, S-100 61 STOCKHOLM
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PIERCE & STEVENS CORP.;REEL/FRAME:004734/0075
Effective date: 19860911
|May 6, 1981||AS||Assignment|
Owner name: PIERCE & STEVENS CHEMICAL CORPORATION
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DOW CHEMICAL COMPANY, THE;REEL/FRAME:003869/0545
Effective date: 19810504