Patent US3843602A successfully refreshed from Google Patents.
US3843602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soluble amide-imide polymers terminated with olefin groups
Assignee: General Electric Co
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Filing: 1970-04-24
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Granted: 1974-10-22
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Expires: 1990-04-24
Abstract
Abstract New economic prepolymers containing aromatic amide and imide groups, and terminated with olefinic groups, cure readily with heat, with or without catalyst and without the evolution of volatiles to give void-free, tough, flame-resistant, cross-linked and thermally stable imide-containing polymers. Diamine is reacted with an acidic material containing trimellitic anhydride or its derivatives and the resulting prepolymer diamine is further treated to provide olefincontaining end groups. The system can be dehydrated to afford the completely imidized prepolymer which can be used for solution and/or solid applications.
Inventors
- 👤 D Kruh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:57
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/06; B32B27/08; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/14; B32B37/00; B32B37/10; B32B2307/00; B32B2307/50; B32B2307/546; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31855; Y10T428/31931
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
THE REACTION PRODUCT OF (1) THE REACTION PRODUCT OF EXCESS DIAMINE CONTAINING AT LEAST TWO CARBON ATOMS WITH AN ACIDIC MATERIAL SELECTED FROM (A) TRIMELLITIC ANHYDRIDE, (B) TRIMELLITIC ANHYDRIDE WITH UP TO 20 MOLE PERCENT SUBSTITUTED BY AROMATIC DIANHYDRIDE, AND (C) TRIMELLITIC ANHYDRIDE WITH UP TO 100 PERCENT BY WEIGHT OF MATERIAL SELECTED FROM DICARBOXYLIC ACID AND ALIPHATIC DIABHYDRIDE AND (2) OLEFINIC DIENOPHILE MATERIAL HAVING AMINE REACTIVITY SELECTED FROM (A) DIELS-ALDER ADDUCTS OF DIENES WITH MALEIC ANHYDRIDE, (B) ACETYLENE DICARBOXYLIC ESTERS, (C) ACETYLENE DICARBOXYLIC ACRYLATES, (D) MALEIC ANHYDRIDE, (E) HALOGEN-, LOWER ALKYL- AND AROMATIC-SUBSTITUTED MALEIC ANHYDRIDE, (F) CITRACONIC ANHYDRIDE, (G) TETRAHYDROPHTHALIC ANHYDRIDE, (H) ITACONIC ANHYDRIDE, (I) ALKENYLSUBSTITUTED SUCCINIC ANHYDRIDE, (J) CIS-ENDO-5-NORBORNENE2,3-DICARBOXYLIC ANHYDRIDE, AND (K) ALKYL AND HALOGENATED DERIVATIVES OF CIS-ENDO-5-NORBORNENE-2,3-DICARBOXYLIC ANHYDRIDE.
Claim 2
Dependent Claim
121 words
THE REACTION PRODUCT OF (1) THE REACTION PRODUCT OF EXCESS DIAMINE CONTAINING AT LEAST TWO CARBON ATOMS WITH AN ACIDIC MATERIAL SELECTED FROM (A) TRIMELLITIC ANHYDRIDE, (B) TRIMELLITIC ANHYDRIDE WITH UP TO 20 MOLE PERCENT SUBSTITUTED BY AROMATIC DIANHYDRIDE, AND (C) TRIMELLITIC ANHYDRIDE WITH UP TO 100 PERCENT BY WEIGHT OF MATERIAL SELECTED FROM DICARBOXYLIC ACID AND ALIPHATIC DIABHYDRIDE AND (2) OLEFINIC DIENOPHILE MATERIAL HAVING AMINE REACTIVITY SELECTED FROM (A) DIELS-ALDER ADDUCTS OF DIENES WITH MALEIC ANHYDRIDE, (B) ACETYLENE DICARBOXYLIC ESTERS, (C) ACETYLENE DICARBOXYLIC ACRYLATES, (D) MALEIC ANHYDRIDE, (E) HALOGEN-, LOWER ALKYL- AND AROMATIC-SUBSTITUTED MALEIC ANHYDRIDE, (F) CITRACONIC ANHYDRIDE, (G) TETRAHYDROPHTHALIC ANHYDRIDE, (H) ITACONIC ANHYDRIDE, (I) ALKENYLSUBSTITUTED SUCCINIC ANHYDRIDE, (J) CIS-ENDO-5-NORBORNENE2,3-DICARBOXYLIC ANHYDRIDE, AND (K) ALKYL AND HALOGENATED DERIVATIVES OF CIS-ENDO-5-NORBORNENE-2,3-DICARBOXYLIC ANHYDRIDE.
Claim 3
Dependent Claim
6 words
The cured product of claim 1.
Claim 4
Dependent Claim
7 words
The dehydrated imidized product of claim 1.
Claim 5
Dependent Claim
34 words
The product of claim 1 wherein said aromatic dianhydride is selected from pyromellitic dianhydride, benzophenone dianhydride and mixtures thereof and said diamine is selected from meta-phenylene diamine, methylenedianiline, diaminodiphenyl sulfone, oxydianiline and mixtures thereof.
Claim 6
Dependent Claim
25 words
The product of claim 1 wherein said dicarboxylic acid is selected from azelaic acid, adipic acid, succinic acid, isophthalic acid, terephthalic acid, and mixtures thereof.
Claim 7
Dependent Claim
24 words
The product of claim 1 wherein said dienophile material is selected from maleic anhydride and halogen, lower alkyl and aromatic substituents and mixtures thereof.
Claim 8
Dependent Claim
9 words
A film prepared from the product of claim 1.
Claim 9
Dependent Claim
11 words
A laminate using the product of claim 1 as a binder.
Claim 10
Dependent Claim
10 words
A molded structure prepared from the product of claim 1.
Claim 11
Dependent Claim
10 words
The product of claim 1 which is end-capped with monoisocyanate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |