US3882068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sizing composition for glass fibers of polypropylene emulsion and silane coupling agent
Assignee: Johns Manville Corp
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Filing: 1972-12-01
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Granted: 1975-05-06
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Expires: 1992-12-01
Abstract
Abstract A sizing composition for glass fibers that is adapted to reinforced thermoplastic resin systems comprises 2-30 percent by weight polyolefin emulsion having a solids content of about 30 percent, 0.01 to 2.5 percent by weight coupling agent, and a balance of water.
Inventors
- 👤 Paul Russel Swartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:50
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/04; C08J5/06; C08J5/08; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/26; C03C25/28; C03C25/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A SIZING COMPOSITION FOR GLASS GIBERS USED FOR REINFORCING THERMOPLASTIC RESIN SYSTEMS WHICH CONSITS OF, IN WEIGHT PERCENT BASED ON THE COMPOSITION: 2 TO 30 PERCENT POLYPROPYLENE EMUULSION FILM FORMER HAVING A SOLIDS CONTENT OF ABOUT 30 PERCENT; 0.01 TO 2.5 PERCENT SILANE COUPLING AGENT; AND THE BALANCE BEING WATER.
Claim 2
Dependent Claim
50 words
A SIZING COMPOSITION FOR GLASS GIBERS USED FOR REINFORCING THERMOPLASTIC RESIN SYSTEMS WHICH CONSITS OF, IN WEIGHT PERCENT BASED ON THE COMPOSITION: 2 TO 30 PERCENT POLYPROPYLENE EMUULSION FILM FORMER HAVING A SOLIDS CONTENT OF ABOUT 30 PERCENT; 0.01 TO 2.5 PERCENT SILANE COUPLING AGENT; AND THE BALANCE BEING WATER.
References Cited (Backward Citations)
US3644141A
Cited
US3814715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |