Patent US4335186A successfully refreshed from Google Patents.
US4335186A
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Chemically modified asphalt compositions
Assignee: Owens Corning Fiberglas Technology Inc
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Filing: 1979-05-18
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Granted: 1982-06-15
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Expires: 1999-05-18
Abstract
Abstract Chemically modified asphalt compositions prepared by reaction of asphalt with ammonia, a polyamine or an aromatic diamine. The chemically modified asphalt compositions of this invention are particularly well suited for use in the treatment of glass fibers as reinforcement for asphalt matrices.
Inventors
- 👤 Alfred Marzocchi
- 👤 Michael G. Roberts
- 👤 Charles E. Bolen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:50
CPC Classifications
C; C08; C08L; C08L95/00; C03; C03C; C03C25/00; C03C25/10; C03C25/24; C03C25/25; C10; C10C; C10C3/00; C10C3/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2938; Y10T428/31504; Y10T428/31551; Y10T428/31641
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
61 words
Glass fibers coated with a chemically modified asphalt prepared by reaction at a temperature of 100° to 500° C. of an asphalt with a nitrogen-containing compound selected from the group consisting of (a) ammonia, (b) a polyalkylene polyamine and (c) an aromatic diamine having the formula H 2 N--R--NH 2 wherein R is a divalent aromatic group containing 6-15 carbon atoms.
Claim 2
Dependent Claim
61 words
Glass fibers coated with a chemically modified asphalt prepared by reaction at a temperature of 100° to 500° C. of an asphalt with a nitrogen-containing compound selected from the group consisting of (a) ammonia, (b) a polyalkylene polyamine and (c) an aromatic diamine having the formula H 2 N--R--NH 2 wherein R is a divalent aromatic group containing 6-15 carbon atoms.
Claim 3
Dependent Claim
34 words
Glass fibers as defined in claim 1 wherein the glass fibers are in the form of individual filaments, and the coating is in the form of a thin film coating on the individual filaments.
Claim 4
Dependent Claim
29 words
Glass fibers as defined in claim 1 wherein the glass fibers are in the form of a bundle and the coating is present as an impregnant in the bundle.
References Cited (Backward Citations)
US2461971A
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US2582824A
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US2534713A
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US2716616A
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DE2032007A1
Cited
US3997354A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-14 | 1985-12-14 | 1986-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-14 | 1989-12-14 | 1990-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-14 | 1993-12-14 | 1994-06-15 | $7700.00 | Window Closed / Lapsed |