Patent US4309326A successfully refreshed from Google Patents.
US4309326A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass size compositions and glass fibers coated therewith
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1979-10-01
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Granted: 1982-01-05
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Expires: 1999-10-01
Abstract
Abstract A size composition for glass fibers, and glass fibers coated therewith, is disclosed. The size comprises an unsaturated, water-emulsifiable polyester resin, an ethylene-vinyl acetate copolymer emulsion and a polyvinyl acetate-organo silane copolymer, the size being suitable for application to fiberglass roving employed to reinforce sheet and bulk molding compounds.
Inventors
- 👤 Donald B. Sage
- 👤 Fred G. Krautz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:29
CPC Classifications
C; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2962; Y10T428/2964
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
32 words
An aqueous glass size composition comprising an unsaturated, water-emulsifiable polyester resin, an ethylene-vinyl acetate copolymer and a vinyl acetate-organosilane copolymer having from about 1 to about 7 weight percent of said organosilane.
Claim 2
Dependent Claim
32 words
An aqueous glass size composition comprising an unsaturated, water-emulsifiable polyester resin, an ethylene-vinyl acetate copolymer and a vinyl acetate-organosilane copolymer having from about 1 to about 7 weight percent of said organosilane.
Claim 3
Dependent Claim
15 words
The composition of claim 1 in which said polyester resin is an orthophthalic polyester resin.
Claim 4
Dependent Claim
18 words
The composition of claim 1 in which said polyester resin comprises about 1 to about 13 weight percent.
Claim 5
Dependent Claim
20 words
The composition of claim 1 in which said ethylene-vinyl acetate copolymer emulsion comprises about 1 to about 10 weight percent.
Claim 6
Dependent Claim
19 words
The composition of claim 1 in which said vinyl acetate-organosilane copolymer comprises about 1 to about 15 weight percent.
Claim 7
Dependent Claim
19 words
The composition of claim 1 in which said vinyl acetate-organosilane copolymer is a copolymer of vinyl acetate and gamma-methacryloxypropyltrimethoxysilane.
Claim 8
Dependent Claim
22 words
The composition of claim 1 in which the organosilane comprises about 1 to about 7 weight percent of said vinyl acetate-organosilane copolymer.
Claim 9
Dependent Claim
14 words
The composition of claim 1 further comprising a lubricant and an organosilane coupling agent.
Claim 10
Dependent Claim
30 words
The composition of claim 8 in which said lubricant comprises about 0.02 to about 1.0 weight percent and said organosilane coupling agent comprises about 0.01 to about 1.0 weight percent.
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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) | 1985-01-04 | 1985-07-06 | 1986-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-04 | 1989-07-06 | 1990-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-04 | 1993-07-06 | 1994-01-05 | $7700.00 | Window Closed / Lapsed |