Patent US4871832A successfully refreshed from Google Patents.
US4871832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosettable imide compound and epoxy resin composition containing the same
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1988-01-21
•
Granted: 1989-10-03
•
Expires: 2008-01-21
Abstract
Abstract The invention provides an imide compound represented by the general formula (I), <IMAGE> (I) <IMAGE> wherein X represents a hydroxyl or amino group, Ar1 and Ar2 independently represent an aromatic residue, R1 represents a hydrogen atom or a C1-C10 alkyl group, R2 represents a hydrogen atom, a C1-C20 alkyl or alkoxy group or a hydroxyl group, and n represents a number of from 0 to 6, and also provides an epoxy resin composition containing the imide compound (B) and epoxy resins (A) as essential components.
Inventors
- 👤 Yasuhisa Saito
- 👤 Shuichi Kanagawa
- 👤 Katsuya Watanabe
- 👤 Kunimasa Kamio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:21
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/04; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/4007; C08G59/4014; C08G59/4042; C08G59/50; C08G59/5046; C08G59/5053; C08G59/62; C08G73/00; C08G73/06; C08G73/10; C08G73/1067
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
An imide compound represented by the general formula (I), ##STR6## wherein X represents a hydroxyl or amino group, Ar 1 and Ar 2 independently represent an aromatic residue, R 1 represents a hydrogen atom or a C 1 -C 10 alkyl group, R 2 represents a hydrogen atom, a C 1 -C 20 alkyl or alkoxyl group or a hydroxyl group, and n represents a number of from 0 to 6.
Claim 2
Dependent Claim
71 words
An imide compound represented by the general formula (I), ##STR6## wherein X represents a hydroxyl or amino group, Ar 1 and Ar 2 independently represent an aromatic residue, R 1 represents a hydrogen atom or a C 1 -C 10 alkyl group, R 2 represents a hydrogen atom, a C 1 -C 20 alkyl or alkoxyl group or a hydroxyl group, and n represents a number of from 0 to 6.
Claim 3
Dependent Claim
17 words
An imide compound as claimed in claim 1, wherein the terminal group X is an amino group.
Claim 4
Dependent Claim
17 words
An imide compound as claimed in claim 1 wherein the terminal group X is a hydroxyl group.
Claim 5
Dependent Claim
19 words
An imide compound as claimed in claim 1, wherein R 1 is a C 1 -C 3 alkyl group.
Claim 6
Dependent Claim
23 words
An imide compound as claimed in claim 1, wherein R 2 is a hydrogen atom or a C 1 -C 5 alkyl group.
References Cited (Backward Citations)
US3634325A
Cited
US3574160A
Cited
US3501443A
Cited
US3607814A
Cited
US3763114A
Cited
US4271079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-02 | 1993-04-03 | 1993-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-02 | 1997-04-03 | 1997-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-02 | 2001-04-03 | 2001-10-03 | $7700.00 | Window Closed / Lapsed |