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US4159362A
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Aqueous size composition for glass fibers containing epoxy resin, polyethylene glycol monostearate polyvinylpyrrolidone, methacryloxypropyltrialkoxysilane and a glucan-carboxymethyl cellulose mixture
Assignee: Owens Corning
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Filing: 1977-12-30
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Granted: 1979-06-26
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Expires: 1997-12-30
Abstract
Abstract An aqueous size composition is disclosed. The composition is particularly suited for application to glass fibers, and consists essentially of an emulsified epoxy resin, a gamma-methacryloxypropyltrialkoxy silane wherein the alkoxy group has from 1 to 3 carbons, a polyethylene glycol monostearate, a polyvinylpyrrolidone, a water dispersible powder of disintegrated beta-1,4-glucan material and sodium carboxymethyl cellulose dispersed therein and an organic acid in an amount sufficient to provide a pH from 3 to 6.
Inventors
- 👤 Richard A. McCoy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:23
CPC Classifications
C; C08; C08L; C08L63/00; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/54; C08K7/00; C08K7/02; C08K7/04; C08K7/14; C08L1/00; C08L1/08; C08L1/10; C08L39/00; C08L39/04; C08L39/06; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
89 words
An aqueous size composition for glass fibers, said composition consisting essentially of an emulsified epoxy resin, a gamma-methacryloxypropyltrialkoxy silane wherein each alkoxy group has from one to three carbons, a polyethylene glycol monostearate, a polyvinylpyrrolidone, a water dispersible powder comprising about 85 to 95 parts by weight of disintegrated beta-1,4-glucan-containing material and from about 15 to 5 parts by weight of sodium carboxymethyl cellulose having a degree of substitution of 0.75±0.15, a lubricant and an organic acid in an amount sufficient to provide a pH from 3 to 6.
Claim 2
Dependent Claim
89 words
An aqueous size composition for glass fibers, said composition consisting essentially of an emulsified epoxy resin, a gamma-methacryloxypropyltrialkoxy silane wherein each alkoxy group has from one to three carbons, a polyethylene glycol monostearate, a polyvinylpyrrolidone, a water dispersible powder comprising about 85 to 95 parts by weight of disintegrated beta-1,4-glucan-containing material and from about 15 to 5 parts by weight of sodium carboxymethyl cellulose having a degree of substitution of 0.75±0.15, a lubricant and an organic acid in an amount sufficient to provide a pH from 3 to 6.
Claim 3
Dependent Claim
70 words
An aqueous size composition as claimed in claim 1 wherein the total solids content of the composition is from about 3 percent to about 7 percent, the epoxy resin solids are from about 2 percent to about 4 percent, the glycol monostearate solids are from about 1/2 percent to about 13/4 percent and that glucan-carboxymethyl cellulose solids are from about 0.1 percent to about 0.5 percent, all proportions by weight.
Claim 4
Dependent Claim
35 words
An aqueous size composition as claimed in claim 2 wherein the silane is gamma-methacryloxy-propyltrimethoxy silane, and said silane constitutes from about 10 percent to about 25 percent by weight based upon the epoxy resin solids.
Claim 5
Dependent Claim
27 words
A glass fiber produced by applying an aqueous size composition as claimed in claim 1 to the surface of a freshly drawn fiber and curing the size.
Claim 6
Dependent Claim
34 words
A glass fiber as claimed in claim 4 wherein the cured size constitutes from about one-fourth percent to about three-fourth percent by weight, based upon the weight of the fiber and the cured size.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-25 | 1982-12-25 | 1983-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-25 | 1986-12-25 | 1987-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-25 | 1990-12-25 | 1991-06-26 | $7700.00 | Window Closed / Lapsed |