Patent US4139511A successfully refreshed from Google Patents.
US4139511A
Expired / Lapsed
US
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Asphalt compositions
Assignee: Eneos Corp
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Filing: 1977-11-14
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Granted: 1979-02-13
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Expires: 1997-11-14
Abstract
Abstract An asphalt composition comprising an epoxy resin, a maleinated asphaltic material and, if desired, a curing agent for the epoxy resin.
Inventors
- 👤 Shigeyuki Hayashi
- 👤 Masao Isobe
- 👤 Tadakazu Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:25
CPC Classifications
C; C08; C08L; C08L67/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
60 words
As asphalt composition comprising (A) 100 parts by weight of an epoxy resin and (B) 10-2,000 parts by weight of a maleinated asphaltic material obtained by reacting an asphaltic material with maleic anhydride in the ratio by weight of 100:0.2 to 100 at a temperature of 100° to 300° C. and a pressure of atmospheric to 30 kg/cm 2 .
Claim 2
Dependent Claim
60 words
As asphalt composition comprising (A) 100 parts by weight of an epoxy resin and (B) 10-2,000 parts by weight of a maleinated asphaltic material obtained by reacting an asphaltic material with maleic anhydride in the ratio by weight of 100:0.2 to 100 at a temperature of 100° to 300° C. and a pressure of atmospheric to 30 kg/cm 2 .
Claim 3
Dependent Claim
24 words
An asphalt composition according to claim 1, further comprising (C) up to 1,000 parts by weight of a curing agent for the epoxy resin.
Claim 4
Dependent Claim
25 words
An asphalt composition comprising (A) 100 parts by weight of an epoxy resin and (B) 10-1,000 parts by weight of an esterified, maleinated asphaltic material.
Claim 5
Dependent Claim
25 words
An asphalt composition comprising (A) 100 parts by weight of an epoxy resin and (B) 10-1,000 parts by weight of an esterified, maleinated asphaltic material.
Claim 6
Dependent Claim
24 words
An asphalt composition according to claim 3, further comprising (C) up to 1,000 parts by weight of a curing agent for the epoxy resin.
Claim 7
Dependent Claim
54 words
An asphalt composition according to claim 3, wherein the esterified, maleinated asphaltic material (B) is a member selected from the group consisting of (1) a reaction product of an asphaltic material and an esterified maleic anhydride and (2) an ester of an alcohol and a reaction product of an asphaltic material and maleic anhydride.
Claim 8
Dependent Claim
54 words
An asphalt composition according to claim 4, wherein the esterified, maleinated asphaltic material (B) is a member selected from the group consisting of (1) a reaction product of an asphaltic material and an esterified maleic anhydride and (2) an ester of an alcohol and a reaction product of an asphaltic material and maleic anhydride.
References Cited (Backward Citations)
US3678131A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |