Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUST873016 I4
Publication typeGrant
Publication dateApr 28, 1970
Filing dateNov 28, 1969
Priority dateNov 28, 1969
Publication numberUS T873016 I4, US T873016I4, US-I4-T873016, UST873016 I4, UST873016I4
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Defensive publication
US T873016 I4
Abstract  available in
Images(1)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

DEFENSIVE PUBLIQATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.G. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED APRIL 28, 1970 EXTRACTION 0F DELETERIOUS RESIDUES FROM POLYCARBONATE 0F 2,2,4,4-TETRAMETHYL- 1,3-CYCLOBUTANEDIOL Russell Gilkey, 1704 Springfield Ave. 37660, and John R. Caldwell, 404 Colonial Heights Road 37663, both of Kingsport, Tenn.

Filed Nov. 28, 1969, Ser. No. 880,974 Int. Cl. C08g 22/00 U.S. Cl. 260-775 No Drawing. 14 Pages Specification Substantially all of the alkali metal catalyst residues contained in the polycarbonates of 2,2,4,4-tetramethyl-1,3- cyclobutanediol can be removed therefrom without materially ailecting the chemical composition of the polycarbonate by treating the polycarbonate with an acidic organic compound having an ionization constant of about 2X10- to 2.5 X 10- and sufiicien't solvent power to diffuse through the polycarbonate to contact and provide the residues of said alkali metal catalyst in a form removable from the polycarbonate. Removal of these catalyst residues provides a final polycarbonate product having greatly improved thermal and hydrolytic stability and improved resistance to weathering. Color impurities are also removed by the process thereby providing, in addition, a product of improved color. The polycarbonate contacted with the organic acidic compound may be either in solid form or in solution, and the alkali metal catalyst residues dispersed or dissolved in the polymer may be extracted therefrom by the acidic organic compounds which are selective solvents for the alkali metal residues. Alternatively, the acidic organic compounds may be added to a solution of the polymer in water-immiscible solvents to convert the alkali metal catalyst residues to a watersoluble form which can be easily removed by a liquidliquid extraction with water. Thus, the organic compound contacting step provides the alkali metal catalyst residues in a form that can be removed from the polycarbonate, which form is either an acidic organic compound-alkali metal catalyst residue extraction mixture or a water-soluble reaction product of the alkali metal catalyst and the acidic organic compound. The residues of alkali metal catalysts employed may be dissolved or dispersed in the polymer in their original catalyst form, or as a derivative of the original catalyst, or as reactant or reaction products. Illustrative of suitable acidic organic compounds for use in the process are carboxylic acids containing at least one carboxyl group, acid phosphates and phosphites, sulfonic acids, disulfonylimides and the like.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5962622 *Dec 23, 1997Oct 5, 1999Eastman Chemical CompanyProcess for preparing the polycarbonate of 2,2,4,4-tetramethyl-1,3-cyclobutanediol
US7576171Mar 28, 2006Aug 18, 2009Eastman Chemical CompanyPacifiers comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7704605Feb 4, 2009Apr 27, 2010Eastman Chemical CompanyThermoplastic articles comprising cyclobutanediol having a decorative material embedded therein
US7737246Dec 7, 2006Jun 15, 2010Eastman Chemical CompanyPolyester compositions which comprise cyclobutanediol, cyclohexanedimethanol, and ethylene glycol and manufacturing processes therefor
US7740941Jan 29, 2009Jun 22, 2010Eastman Chemical CompanyThermoplastic articles comprising cyclobutanediol having a decorative material embedded therein
US7781562Mar 28, 2006Aug 24, 2010Eastman Chemical CompanyPolyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and moderate glass transition temperature and articles made therefrom
US7803439Mar 28, 2006Sep 28, 2010Eastman Chemical CompanyBlood therapy containers comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7803440Mar 28, 2006Sep 28, 2010Eastman Chemical CompanyBottles comprising polyester compositions which comprise cyclobutanediol
US7803441 *Mar 28, 2006Sep 28, 2010Eastman Chemical CompanyIntravenous components comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7807774Mar 28, 2006Oct 5, 2010Eastman Chemical CompanyVending machines comprising polyester compositions formed from 2,2,4,4,-tetramethyl-1,3,-cyclobutanediol and 1,4-cyclohexanedimethanol
US7807775Mar 28, 2006Oct 5, 2010Eastman Chemical CompanyPoint of purchase displays comprising polyester compositions formed from 2,2,4,4-tetramethyl-1, 3,-cyclobutanediol and 1,4-cyclohexanedimethanol
US7812111Mar 28, 2006Oct 12, 2010Eastman Chemical CompanyLCD films comprising polyester compositions formed from 2,2,4,4-tetramethy1-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7812112Mar 28, 2006Oct 12, 2010Eastman Chemical CompanyOutdoor signs comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7834129Mar 28, 2006Nov 16, 2010Eastman Chemical CompanyRestaurant smallware comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7838620Mar 28, 2006Nov 23, 2010Eastman Chemical CompanyThermoformed sheet(s) comprising polyester compositions which comprise cyclobutanediol
US7842776Mar 28, 2006Nov 30, 2010Eastman Chemical CompanyAppliance parts comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7868128Mar 28, 2006Jan 11, 2011Eastman Chemical CompanySkylights and windows comprising polyester compositions formed from 2,2,4,4,-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7893188Mar 28, 2006Feb 22, 2011Eastman Chemical CompanyBaby bottles comprising polyester compositions which comprise cyclobutanediol
US7902320Mar 28, 2006Mar 8, 2011Eastman Chemical CompanyGraphic art films comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7906211Mar 16, 2010Mar 15, 2011Eastman Chemical CompanyThermoplastic articles comprising cyclobutanediol having a decorative material embedded therein
US7906212Mar 16, 2010Mar 15, 2011Eastman Chemical CompanyThermoplastic articles comprising cyclobutanediol having a decorative material embedded therein
US7906610Mar 28, 2006Mar 15, 2011Eastman Chemical CompanyFood service products comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7915376Mar 28, 2006Mar 29, 2011Eastman Chemical CompanyContainers comprising polyester compositions which comprise cyclobutanediol
US7951900Mar 28, 2006May 31, 2011Eastman Chemical CompanyDialysis filter housings comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US7955674Mar 28, 2006Jun 7, 2011Eastman Chemical CompanyTransparent polymer blends containing polyesters comprising a cyclobutanediol and articles prepared therefrom
US7959836Mar 28, 2006Jun 14, 2011Eastman Chemical CompanyProcess for the preparation of transparent, shaped articles containing polyesters comprising a cyclobutanediol
US7959998Mar 28, 2006Jun 14, 2011Eastman Chemical CompanyTransparent, oxygen-scavenging compositions containing polyesters comprising a cyclobutanediol and articles prepared therefrom
US7985827Mar 28, 2006Jul 26, 2011Eastman Chemical CompanyPolyester compositions which comprise cyclobutanediol having certain cis/trans ratios
US8063172Mar 28, 2006Nov 22, 2011Eastman Chemical CompanyFilm(s) and/or sheet(s) made using polyester compositions containing low amounts of cyclobutanediol
US8063173Mar 28, 2006Nov 22, 2011Eastman Chemical CompanyPolyester compositions containing low amounts of cyclobutanediol and articles made therefrom
US8067525Mar 28, 2006Nov 29, 2011Eastman Chemical CompanyFilm(s) and/or sheet(s) comprising polyester compositions which comprise cyclobutanediol and have a certain combination of inherent viscosity and high glass transition temperature
US8101705May 20, 2010Jan 24, 2012Eastman Chemical CompanyPolyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and moderate glass transition temperature and articles made therefrom
US8119761Mar 28, 2006Feb 21, 2012Eastman Chemical CompanyPolyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and high glass transition temperature and articles made therefrom
US8119762Nov 10, 2010Feb 21, 2012Eastman Chemical CompanyFilm(s) and/or sheet(s) comprising polyester compositions which comprise cyclobutanediol and have a certain combination of inherent viscosity and moderate glass transition temperature
US8133967Oct 7, 2010Mar 13, 2012Eastman Chemical CompanyRestaurant smallware comprising polyester compositions formed from 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US8193302Oct 27, 2006Jun 5, 2012Eastman Chemical CompanyPolyester compositions which comprise cyclobutanediol and certain phosphate thermal stabilizers, and/or reaction products thereof
US8198371Feb 23, 2009Jun 12, 2012Eastman Chemical CompanyBlends of polyesters and ABS copolymers
US8287970Nov 20, 2008Oct 16, 2012Eastman Chemical CompanyPlastic baby bottles, other blow molded articles, and processes for their manufacture
US8299204Oct 27, 2006Oct 30, 2012Eastman Chemical CompanyPolyester compositions which comprise cyclobutanediol and certain thermal stabilizers, and/or reaction products thereof
US8354491Jan 28, 2011Jan 15, 2013Eastman Chemical CompanyContainers comprising polyester compositions which comprise cyclobutanediol
US8394997Dec 9, 2010Mar 12, 2013Eastman Chemical CompanyProcess for the isomerization of 2,2,4,4-tetraalkylcyclobutane-1,3-diols
US8415450Jan 12, 2012Apr 9, 2013Eastman Chemical CompanyPolyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and high glass transition temperature and articles made therefrom
US8420868Dec 9, 2010Apr 16, 2013Eastman Chemical CompanyProcess for the preparation of 2,2,4,4-tetraalkylcyclobutane-1,3-diols
US8420869Dec 9, 2010Apr 16, 2013Eastman Chemical CompanyProcess for the preparation of 2,2,4,4-tetraalkylcyclobutane-1,3-diols
US8501287Sep 23, 2010Aug 6, 2013Eastman Chemical CompanyPlastic baby bottles, other blow molded articles, and processes for their manufacture
US8501292Aug 28, 2012Aug 6, 2013Eastman Chemical CompanyPlastic baby bottles, other blow molded articles, and processes for their manufacture
US8507638Aug 23, 2011Aug 13, 2013Eastman Chemical CompanyPolyester compositions containing cyclobutanediol having a certain combination of inherent viscosity and moderate glass transition temperature and articles made therefrom
US8586701Jul 3, 2007Nov 19, 2013Eastman Chemical CompanyProcess for the preparation of copolyesters based on 2,2,4,4-tetramethyl-1,3-cyclobutanediol and 1,4-cyclohexanedimethanol
US8895654Dec 18, 2008Nov 25, 2014Eastman Chemical CompanyPolyester compositions which comprise spiro-glycol, cyclohexanedimethanol, and terephthalic acid
EP0850971A2 *Dec 23, 1997Jul 1, 1998Eastman Chemical CompanyProcess for deactivating polycarbonate catalyst residues
EP0857744A2 *Dec 23, 1997Aug 12, 1998Eastman Chemical CompanyProcess for deactivating alkali metal catalyst residues in poly(2,2,4,4-tetramethyl-1,3-cyclobutylene carbonate)
Classifications
U.S. Classification528/486, 524/147, 528/370, 524/321, 528/487, 524/157, 524/145, 524/168
International ClassificationC08G64/00, C08G64/40
Cooperative ClassificationC08G64/406
European ClassificationC08G64/40D