US4722992A
Expired / Lapsed
US
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Injection moldable polymer comprising phthalic anhydride, aniline and trimellitic anhydride moieties
Assignee: Standard Oil Co
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Filing: 1985-06-10
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Granted: 1988-02-02
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Expires: 2005-06-10
Abstract
Abstract Novel polymers and molding compositions are prepared from acyl halide derivatives of tricarboxylic acids and diamines and about 1 to about 10 percent by weight of phthalic anhydride, or trimellitic anhydride or aniline moieties. The polymers are useful in engineering plastics.
Inventors
- 👤 Robert B. Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:07
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/14; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
77 words
An injection moldable polyamide-imide polymer comprising about 1 to about 10 percent phthalic anhydride moieties and recurring amide-imide moieties of: ##STR9## and of: ##STR10## and of: ##STR11## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 , R 2 and R 3 are the same or different and are divalent aromatic or aliphatic radicals.
Claim 2
Dependent Claim
77 words
An injection moldable polyamide-imide polymer comprising about 1 to about 10 percent phthalic anhydride moieties and recurring amide-imide moieties of: ##STR9## and of: ##STR10## and of: ##STR11## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 , R 2 and R 3 are the same or different and are divalent aromatic or aliphatic radicals.
Claim 3
Dependent Claim
15 words
The polymer of claim 1 comprising about 1 to about 10 percent phthalic anhydride moieties.
Claim 4
Dependent Claim
15 words
The polymer of claim 2 comprising about 1 to about 8 percent phthalic anhydride moieties.
Claim 5
Dependent Claim
19 words
The polymer of claim 1 wherein R 1 , R 2 and R 3 have the following structure: ##STR12##
Claim 6
Dependent Claim
41 words
The polymer of claim 1 wherein R 1 and R 2 have the following structure: ##STR13## and R 3 is ##STR14## wherein the mole ratio of R 3 to both R 1 and R 2 is about 5:95 to about 30:70.
Claim 7
Dependent Claim
25 words
The polymer of claim 5 wherein the mole ratio of R 3 to both R 1 and R 2 is about 10:90 to about 20:80.
Claim 8
Dependent Claim
44 words
The polymer of claim 1 wherein R 1 and R 2 have the following structure: ##STR15## and R 3 is a divalent aliphatic hydrocarbon wherein the mole ratio of R 3 to both R 1 and R 2 is about 5:95 to about 30:70.
Claim 9
Dependent Claim
14 words
The polymer of claim 7 wherein R 3 is of the following structure: ##STR16##
Claim 10
Dependent Claim
77 words
An injection moldable polyamide-imide polymer comprising about 1 to about 10 percent phthalic anhydride moieties and recurring amide-imide moieties of: ##STR17## and of: ##STR18## and of; ##STR19## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 , R 2 and R 3 are the same or different and are divalent aromatic or aliphatic radicals.
Claim 11
Dependent Claim
77 words
An injection moldable polyamide-imide polymer comprising about 1 to about 10 percent phthalic anhydride moieties and recurring amide-imide moieties of: ##STR17## and of: ##STR18## and of; ##STR19## wherein one carbonyl group is meta to and one carbonyl group is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 , R 2 and R 3 are the same or different and are divalent aromatic or aliphatic radicals.
Claim 12
Dependent Claim
15 words
The polymer of claim 9 comprising about 1 to about 10 percent phthalic anhydride moieties.
Claim 13
Dependent Claim
15 words
The polymer of claim 10 comprising about 1 to about 8 percent phthalic anhydride moieties.
Claim 14
Dependent Claim
19 words
the polymer of claim 9 wherein R 1 , R 2 and R 3 have the following structure: ##STR20##
Claim 15
Dependent Claim
41 words
The polymer of claim 9 wherein R 1 and R 2 have the following structure: ##STR21## and R 3 is ##STR22## wherein the mole ratio of R 3 to both R 1 and R 2 is about 5:95 to about 30:70.
Claim 16
Dependent Claim
25 words
The polymer of claim 13 wherein the mole ratio of R 3 to both R 1 and R 2 is about 10:90 to about 20:80.
Claim 17
Dependent Claim
44 words
The polymer of claim 9 wherein R 1 and R 2 have the following structure: ##STR23## and R 3 is a divalent aliphatic hydrocarbon wherein the mole ratio of R 3 to both R 1 and R 2 is about 5:95 to about 30:70.
Claim 18
Dependent Claim
14 words
The polymer of claim 15 wherein R 3 is of the following structure: ##STR24##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-01 | 1991-08-03 | 1992-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-01 | 1995-08-03 | 1996-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-01 | 1999-08-03 | 2000-02-02 | $7700.00 | Window Closed / Lapsed |