Patent US4755569A successfully refreshed from Google Patents.
US4755569A
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Thermosetting resin composition comprising a partly allylated novolac epoxy resin and bismaleimide
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1987-03-02
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Granted: 1988-07-05
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Expires: 2007-03-02
Abstract
Abstract A thermosetting resin composition comprising (A) a phenol novolac resin, some of the hydroxyl groups of which have been allyl-etherified and the other hydroxyl groups having added thereto a compound having one or more epoxy groups and (B) a polymaleimide compound having two or more maleimide groups in the molecule.
Inventors
- 👤 Shuichi Kanagawa
- 👤 Shigeo Hozumi
- 👤 Kunimasa Kamio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:56
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G8/00; C08G8/28; C08G8/36
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
50 words
A thermosetting resin composition comprising (A) a phenol novolac resin, some of the hydroxyl groups of which have been allyl-etherified and the other hydroxyl groups have added thereto a compound having one or more epoxy groups and (B) a polymaleimide compound having two or more maleimide groups in the molecule.
Claim 2
Dependent Claim
50 words
A thermosetting resin composition comprising (A) a phenol novolac resin, some of the hydroxyl groups of which have been allyl-etherified and the other hydroxyl groups have added thereto a compound having one or more epoxy groups and (B) a polymaleimide compound having two or more maleimide groups in the molecule.
Claim 3
Dependent Claim
47 words
A thermosetting resin composition according to claim 1, wherein said polymaleimide compound is a compound having two or more maleimide groups represented by the following general formula (I) in one molecule: ##STR2## wherein R represents hydrogen atom or lower alkyl group having 1 to 5 carbon atoms.
Claim 4
Dependent Claim
19 words
A thermosetting resin composition according to claim 2, wherein said polymaleimide compound is N,N'-diphenylmethane bismaleimide or N,N'-diphenyl ether bismaleimide.
Claim 5
Dependent Claim
28 words
A thermosetting resin composition according to claim 1, wherein said compound having one or more epoxy group(s) in one molecule is an epoxy compound having olefinic double bond(s).
Claim 6
Dependent Claim
45 words
A thermosetting resin composition according to claim 1, wherein, in the novolac resin, the ratio of the allyl-etherified hydroxyl groups to the hydroxyl groups being added with compound(s) having one or more epoxy group(s) in one molecule is in the range of 0.5 to 19.
Claim 7
Dependent Claim
45 words
A thermosetting resin composition according to claim 1, wherein, in the novolac resin, the ratio of the allyl-etherified hydroxyl groups to the hydroxyl groups being added with compound(s) having one or more epoxy group(s) in one molecule is in the range of 0.7 to 9.
Claim 8
Dependent Claim
58 words
A thermosetting resin composition according to claim 1, wherein the ratio of the double bond of the polymaleimide compound to the double bond of the phenol novolac resin of which phenolic hydroxyl groups are allyl-etherified and are added with a compound having one or more epoxy group(s) in one molecule is in the range of 0.5 to 3.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-05 | 1992-01-04 | 1992-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-05 | 1996-01-04 | 1996-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-05 | 2000-01-04 | 2000-07-05 | $7700.00 | Window Closed / Lapsed |