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Publication numberUS2787558 A
Publication typeGrant
Publication dateApr 2, 1957
Filing dateJan 27, 1955
Priority dateJan 27, 1955
Publication numberUS 2787558 A, US 2787558A, US-A-2787558, US2787558 A, US2787558A
InventorsHarold E Wadely
Original AssigneeFirth Carpet Company Inc
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Process of producing phosphorescent yarn
US 2787558 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PROCESS OF PRODUCING PHOSPHORESCENT YARN Harold E. Wadely, Irvington, N. Y., assignor to The Firth Carpet Company, vInc., New York, N. Y., a corporation of New York No Drawing. Application January 27, 1955, Serial No. 484,568

1 Claim. (Cl. 117-33.5)

The present invention relates to textile yarn that is luminous and has the property of phosphorescence, and to a process for producing the same.

The term phosphorescent refers to the continuous emission of light from a substance without any apparent rise in temperature produced after exposure to heat, light, or electronic discharges.

The invention is especially directed to a phosphorescent yarn treated in a particular way to meet the requirements of the floor covering and related industries.

The phosphorescent substances to be described herein are to be distinguished from the familiarly known luminiscent material having the property of fluorescence in which the emission of luminescent light ceases with the removal of the exciting energy.

Phosphorescent pigments are synthetic, inorganic chemicals that have the property of glowing in the dark after previous exposure to daylight, ordinary room lighting or certain other forms of radiant energy. This phosphorescent afterglow lasts from 30 minutes to 10 to 12 hours or more, depending on the pigment, after which it can be repeated again and again by renewed exposure of the pigment to light.

Luminous yarns of one kind or another have long been known in the textile industry. Fluorescent yarns have been used for theatrical fabrics, and some phosphorescent materials have also been used for such a purpose. When floor coverings were made with any of the yarns previously used, the abrasion of walking and scufiing prevented the luminous material from remaining effective for an appreciable period before being worn off the yarn.

Accordingly, the primary object of this invention is to provide a wear-resistant, phosphorescent yarn incorporating a permanently phosphorescent material and a substance capable of providing the required wear protection.

In order to serve these purposes it is essential that the phosphorescent yarn be non-toxic and altogether harmless, and non-allergy producing, so that it may be used without limitation in special fabrics for general home use and related purposes.

It is also a specific and important object of this invention to provide a luminous yarn of the character indicated that may be used by the floor covering industry for markings, bindings, and in the production of textures and patterns having special light effects.

A further and more specific object of this invention resides in the provision of a wear-resistant, textile yarn having the property of stable phosphorescence and comprising fibers carrying a mixture of phosphorescent pigments and light-transmitting resin. The process involved in producing these properties is applicable to any animal, vegetable or artificial spun yarn, with a good range of color. The thus treated yarns may be used in the manu facture of textile fabric floor coverings in accordance with any of the known weaving, knitting, tufting or hooking processes employed in the manufacture of floor coverings.

In accordance with the requirements of the patent aired States Patent "ice 2,787,558 Patented Apr. 2, 1957 of phosphorescent substances in association with the yarn is preferably effected during a process similar to the ones used in the dyeing of yarns. In so doing, the yarn is dipped or bathed in a solution which contains the dye and phosphorescent particles, as well as the binder and resinous material which upon dyeing envelops the particles of phosphorescent substance in such a manner as to permanently integrate them with the yarn and provide substantial safeguard from destructive abrasion in use. The phosphorescent pigments employed are combined with such chemical base substances as zinc sulphide, or zinc sulphide combined with cadmium sulphide, or cadmium sulphide combined with strontium sulphide. Any of the mentioned compounds can be used when mixed with water and necessary binder in the manner set forth hereafter.

The phosphorescent pigments specified herein and appearing in the following examples are those produced by the New Jersey Zinc Company under U. S. Patent No. 2,475,437 as standard articles of commerce. They are further identified by that company as Nos. 2301, 2304, 2330, 2478, 2479 and 2480. Light-transmitting natural or synthetic binders are used with the phosphorescent pigments in the yarn bath. Casein is an example of a natural binder that is suitable, and polyethylene, and polyvinyl acetate are examples from a large number of plastic or synthetic resinous materials that have been used successfully.

The general procedure is to incorporate the phosphorescent material pigments in the fibre or the yarn bath, either with or without previous wetting, and then to add a solution of polyvinyl acetate and casein.

The following specific examples are given:

Example 1 Parts by weight ZnS with phosphorescent base 30 Deceresol OT 25% aqueous (ester of sulfo-dicarboxylic acid such as described in U. S. Patent No. 2,028,091) A Casein solution [100 parts casein, 700 parts H2O,

14 /2 parts borax, 2 /2 parts Dowacide 61----.. 10 Polyvinyl acetate emulsion 10 B20... 49 /2 Total 100 ExampleZ Parts by weight ZnS with phosphorescent base 30 Casein solution [100 parts casein, 700 parts H2O,

14 /2 parts borax, 2 /2 parts Dowacide G] 10 Polyvinyl acetate emulsion 5 H20- 55 Total 100 Example3 Parts by weight Casein solution [100 parts casein, 700 parts H2O,

14 /2 parts borax, 2 /2 parts Dowacide G] ZnS with phosphorescent base 25 Total Above formulae may be used either in combination with a dyeing process or merely by themselves as an impregnating process in such cases where no dyed color is desired on the yarn.

The process for impregnating yarn with any given formula, in its preferred form, is as follows (a) Prepare a well stirred emulsion of resin in water;

into the above-mentioned dispersion and'leave some in such state for aperiod of five to ten minutes;

(:1) 'Remove the yarn from the liquid;

(e) Repeat the immersion and extraction of the yarn (or fibers) as often as may be desirable, depending on the end use of theiproduct;

(f) After completion of the herein given operations dry the yarn (or fibers) at an elevated temperature such as 270F. in-anyconventional manner.

It is to be understood that variations can be made in the details ofithe yarn product and process as disclosed herein without departing from the principles of invention and the'scope of the appended claim.

Having thus described my invention, what I claim as novel anddesire-to secure'by Letters Patent of the United States is:

The process of making phosphorescent face yarn for 4 rugs ,or carpetscomprising impregnating spun yarn-stock with a solution consisting essentially of:

Parts by weight ZnS with phosphorescent base -e 30 Casein solution (100 parts casein; 700 parts H20; 14%. parts borax; 2 /2 parts of a sodium salt of pentachloraphenol') 10 Polyvinyl acetate emulsion 5 H2O 55 removing the thus impregnated yarn-stock from said solution; and then drying the spun yarn at an elevated temperature of the orderof 270 F.

References Cited in the file of this patent UNITED STATES PATENTS 2,033,976 Dreyfus Mar. 17, 1936 2,369,184 Silver Feb. 13, 1945 2,621,134 'Welch- Dec. 9, 1952 2,635,969 Goldstein Apr. 21, 1953

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2033976 *Aug 7, 1930Mar 17, 1936 Treatment op textile or other
US2369184 *Aug 10, 1942Feb 13, 1945Seymour D SilverHot water-soluble paint
US2621134 *Apr 8, 1950Dec 9, 1952Gen Electric Co LtdMethod of depositing luminescent powdered material on surfaces by sedimentation
US2635969 *Mar 3, 1950Apr 21, 1953Joseph GoldsteinPhosphorescent yarns and method for producing same
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4211813 *Mar 20, 1978Jul 8, 1980B.R.I.C. (Burea de Recherche pour l'Innovation et la ConvervencePhotoluminescent textile materials
US4725316 *Apr 9, 1985Feb 16, 1988Eldon Enterprises Ltd.Color compositions and method
US5321069 *Nov 25, 1992Jun 14, 1994Afterglow Accent Yarns, Inc.Process for producing phosphorescent yarn and yarn produced by the process
US5674437 *Feb 28, 1996Oct 7, 1997Glotex CorporationMethod of providing luminescence to fibrous materials
US5914076 *Oct 10, 1997Jun 22, 1999The Glo-Tech CorporationProcess for producing longer-lasting, high luminescence, phosphorescent textile fibers
US6607456 *Aug 6, 2001Aug 19, 2003Wan-Sheng YuSelf-luminous basket net
US7338877Nov 25, 2003Mar 4, 2008Fiber Innovation Technology, Inc.Multicomponent fiber including a luminescent colorant
US7547894Jun 7, 2007Jun 16, 2009Performance Indicator, L.L.C.Phosphorescent compositions and methods for identification using the same
US7842128Sep 13, 2007Nov 30, 2010Performance Indicatior LLCTissue marking compositions
US7910022Jun 7, 2007Mar 22, 2011Performance Indicator, LlcPhosphorescent compositions for identification
US8039193Sep 13, 2007Oct 18, 2011Performance Indicator LlcTissue markings and methods for reversibly marking tissue employing the same
US8282858Aug 5, 2011Oct 9, 2012Performance Indicator, LlcHigh-intensity, persistent photoluminescent formulations and objects, and methods for creating the same
US8287757Aug 3, 2011Oct 16, 2012Performance Indicator, LlcHigh-intensity, persistent photoluminescent formulations and objects, and methods for creating the same
US8293136Aug 5, 2011Oct 23, 2012Performance Indicator, LlcHigh-intensity, persistent photoluminescent formulations and objects, and methods for creating the same
US8409662Jun 15, 2012Apr 2, 2013Performance Indicator, LlcHigh-intensity, persistent photoluminescent formulations and objects, and methods for creating the same
USRE44254Jun 4, 2013Performance Indicator, LlcPhosphorescent compositions and methods for identification using the same
WO2003075046A2 *Feb 26, 2003Sep 12, 2003Jps Converter And Ind CorpFluorescent and phosphorescent coated fibers and fabrics
WO2010063945A1Dec 1, 2009Jun 10, 2010Porcher IndustriesPhotoluminescent composite yarn, method for obtaining same and resulting textile structure
Classifications
U.S. Classification427/157, 427/384, 252/301.36
International ClassificationD06M11/00, D06M11/53, C09D5/22
Cooperative ClassificationD06M11/53, C09D5/22, D06P1/0012
European ClassificationC09D5/22, D06M11/53, D06P1/00A3