Patent US3717615A successfully refreshed from Google Patents.
US3717615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyimides
Assignee: General Electric Co
•
Filing: 1969-04-25
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Granted: 1973-02-20
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Expires: 1989-04-25
Abstract
Abstract Improved products are obtained from the polymerization of mixtures of mono-imides and bis-imides. The compositions thus obtained have improved physical properties and heat resistance making them especially suitable in various coating, insulating and molding applications.
Inventors
- 👤 F Holub
- 👤 D Pauze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:52
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08; C08L79/085; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/125
Claims Analysis
Total Claims: 38
Claim 1
Independent Claim
23 words
A composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent of a mono-imide of the general formula,
Claim 2
Dependent Claim
23 words
A composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent of a mono-imide of the general formula,
Claim 3
Dependent Claim
16 words
A composition as in claim 1 having incorporated therein a small amount of a curing agent.
Claim 4
Dependent Claim
23 words
A composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent of a mono-imide of the general formula,
Claim 5
Dependent Claim
23 words
A composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent of a mono-imide of the general formula,
Claim 6
Dependent Claim
23 words
A composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent of a mono-imide of the general formula
Claim 7
Dependent Claim
23 words
A composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent of a mono-imide of the general formula
Claim 8
Dependent Claim
37 words
A composition containing as essential ingredients by weight (1) up to about 50 percent of a copolymerizable olefin monomer containing a terminal grouping, and correspondingly (2) at least about 50 percent of said composition of claim 1.
Claim 9
Dependent Claim
29 words
A composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent of N-phenyl maleimide and correspondingly (2) from 95 to 5 percent of N,N''-p,p''-diphenyl-methane-bis-maleimiDe.
Claim 10
Dependent Claim
29 words
A composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent of N-phenyl maleimide and correspondingly (2) from 95 to 5 percent of N,N''-p,p''-diphenyl-methane-bis-maleimiDe.
Claim 11
Dependent Claim
22 words
A composition as in claim 6 wherein an organic peroxide is incorporated in an amount sufficient to effect copolymerization of the ingredients.
Claim 12
Dependent Claim
38 words
A heat-reactable composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent N-phenyl maleimide, and correspondingly (2) from 95 to 5 percent of an imide obtained by the reaction of N,N''-p,p''-diphenylmethane-bis-maleimide and 4,4''-diaminodiphenylmethane.
Claim 13
Dependent Claim
38 words
A heat-reactable composition of matter containing as essential ingredients by weight (1) from 5 to 95 percent N-phenyl maleimide, and correspondingly (2) from 95 to 5 percent of an imide obtained by the reaction of N,N''-p,p''-diphenylmethane-bis-maleimide and 4,4''-diaminodiphenylmethane.
Claim 14
Dependent Claim
21 words
A curable composition consisting essentially of the composition of claim 1, and the diamino compound of formula (b) of claim 1.
Claim 15
Dependent Claim
22 words
A composition of matter containing as essential ingredients (A) the imide film forming reaction product of a mono-imide of the general formula,
Claim 16
Dependent Claim
22 words
A composition of matter containing as essential ingredients (A) the imide film forming reaction product of a mono-imide of the general formula,
Claim 17
Dependent Claim
25 words
A composition as in claim 10 where the mono-imide is N-phenyl maleimide, the diamino compound is 4,4''-diamino diphenyl methane and the bis-imide is N,N''-p,p''-diphenyl methane-bis-maleimide.
Claim 18
Dependent Claim
23 words
The fusible reaction product obtained by heating the composition of claim 1 at a temperature in the range of between 75*C to 200*C.
Claim 19
Dependent Claim
23 words
The fusible reaction product obtained by heating the composition of claim 4 at a temperature in the range of between 75*C to 200*C.
Claim 20
Dependent Claim
22 words
The fusible reaction product obtained by heating the composition of claim 11 at a temperature in the range of 75*C to 200*C.
Claim 21
Dependent Claim
22 words
The fusible reaction product obtained by heating the composition of claim 9 to a temperature in the range of 75*C to 200*C.
Claim 22
Dependent Claim
22 words
The fusible reaction product obtained by heating the composition of claim 8 to a temperature in the range of 75*C to 200*C.
Claim 23
Dependent Claim
33 words
The fusible reaction product obtained by heating at a temperature in the range of between 75*C to 200*C, a composition of matter containing as essential ingredients (1) an imide of the general formula:
Claim 24
Dependent Claim
33 words
The fusible reaction product obtained by heating at a temperature in the range of between 75*C to 200*C, a composition of matter containing as essential ingredients (1) an imide of the general formula:
Claim 25
Dependent Claim
20 words
The infusible product of reaction obtained by heating the composition of claim 1 to a temperature of at least 165*C.
Claim 26
Dependent Claim
18 words
The infusible product obtained by heating the composition of claim 4 to a temperature of at least 165*C.
Claim 27
Dependent Claim
18 words
The infusible product obtained by heating the composition of claim 11 to a temperature of at least 165*C.
Claim 28
Dependent Claim
18 words
The infusible product obtained by heating the composition of claim 9 to a temperature of at least 165*C.
Claim 29
Dependent Claim
18 words
The infusible product obtained by heating the composition of claim 10 to a temperature of at least 165*C.
Claim 30
Dependent Claim
18 words
The infusible product obtained by heating the composition of claim 8 to a temperature of at least 165*C.
Claim 31
Dependent Claim
19 words
The process which comprises (1) forming a mixture, containing as essential ingredients (a) a mono-imide of the geneRal formula
Claim 32
Dependent Claim
19 words
The process which comprises (1) forming a mixture, containing as essential ingredients (a) a mono-imide of the geneRal formula
Claim 33
Dependent Claim
24 words
The process as set forth in claim 24 wherein the diamino compound is first reacted with the mono-imide to form an intermediate reaction product.
Claim 34
Dependent Claim
66 words
The process which comprises (1) heating a mixture at a temperature in the range of 80*C to 400*C, which contains as essential ingredients, N-phenyl maleimide and 4,4''-diaminodiphenylmethane, and (2) incorporating N,N''-p,p''-diphenylmethane-bis-maleimide in (1) and (3) heating to a temperature of at least 165*C., the resulting mixture of ingredients to give a product convertible to the infusible state when heated in the presence of an organic peroxide.
Claim 35
Dependent Claim
66 words
The process which comprises (1) heating a mixture at a temperature in the range of 80*C to 400*C, which contains as essential ingredients, N-phenyl maleimide and 4,4''-diaminodiphenylmethane, and (2) incorporating N,N''-p,p''-diphenylmethane-bis-maleimide in (1) and (3) heating to a temperature of at least 165*C., the resulting mixture of ingredients to give a product convertible to the infusible state when heated in the presence of an organic peroxide.
Claim 36
Dependent Claim
27 words
The process which comprises (A) forming a mixture containing as essential ingredients by weight (1) from 5 to 95 percent of a mono-imide of the general formula
Claim 37
Dependent Claim
27 words
The process which comprises (A) forming a mixture containing as essential ingredients by weight (1) from 5 to 95 percent of a mono-imide of the general formula
Claim 38
Dependent Claim
34 words
The process as in claim 27 wherein a source of free radicals is incorporated in the mixture of ingredients in an amount sufficient to accelerate the cure of the mixture of the copolymerizable ingredients.
References Cited (Backward Citations)
US2743260A
Cited
US2818405A
Cited
US3137678A
Cited
GB951025A
Cited
US3352832A
Cited
US3380964A
Cited
US3406148A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-20 | 1976-08-21 | 1977-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-20 | 1980-08-21 | 1981-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-20 | 1984-08-21 | 1985-02-20 | $7700.00 | Window Closed / Lapsed |