US4515924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection moldable amide-imide polymers and copolymers containing semi-crystalline and amorphous polyamides
Assignee: Syensqo Specialty Polymers USA LLC
•
Filing: 1983-05-06
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Granted: 1985-05-07
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Expires: 2003-05-06
Abstract
Abstract Flow properties of polyamide-imide polymers are improved by the addition of semi-crystalline nylons or amorphous polyamides. These polymers are useful as engineering resins, laminates, and molded objects.
Inventors
- 👤 Gary T. Brooks
- 👤 Bill W. Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:47
CPC Classifications
C; C08; C08L; C08L79/00; C08L79/04; C08L79/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
194 words
A composition of matter which comprises (A) an injection moldable copolymer comprising units of: ##STR12## and units of: ##STR13## wherein one carbonyl group of the injection moldable copolymer is meta to and one carbonyl group of the injection moldable copolymer is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from about 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from about 6 to about 10 carbon atoms joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 --, and --S-- radicals and wherein said R 1 and R 2 containing units run from about 10 mole percent R 1 containing unit and about 90 mole percent R 2 containing unit to about 90 mole percent R 1 containing unit and about 10 mole percent R 2 containing unit; and (B) about 0.1 to about 5 percent by weight of a polyamide selected from the group consisting of nylon 6, nylon 6/6, nylon 6/12, nylon 11 and nylon 12.
Claim 2
Dependent Claim
194 words
A composition of matter which comprises (A) an injection moldable copolymer comprising units of: ##STR12## and units of: ##STR13## wherein one carbonyl group of the injection moldable copolymer is meta to and one carbonyl group of the injection moldable copolymer is para to each amide group and wherein Z is a trivalent benzene ring or lower-alkyl-substituted trivalent benzene ring, R 1 and R 2 are different and are divalent aromatic hydrocarbon radicals of from about 6 to about 10 carbon atoms or two divalent aromatic hydrocarbon radicals of from about 6 to about 10 carbon atoms joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 --, and --S-- radicals and wherein said R 1 and R 2 containing units run from about 10 mole percent R 1 containing unit and about 90 mole percent R 2 containing unit to about 90 mole percent R 1 containing unit and about 10 mole percent R 2 containing unit; and (B) about 0.1 to about 5 percent by weight of a polyamide selected from the group consisting of nylon 6, nylon 6/6, nylon 6/12, nylon 11 and nylon 12.
Claim 3
Dependent Claim
26 words
The copolymer of claim 1 wherein R 1 is ##STR14## and R 2 is ##STR15## or wherein R 1 is ##STR16## and R 2 is ##STR17##
Claim 4
Dependent Claim
11 words
The polymer of claim 2 wherein the nylon is nylon 6.
Claim 5
Dependent Claim
11 words
The polymer of claim 2 wherein the nylon is nylon 6/6.
Claim 6
Dependent Claim
11 words
The polymer of claim 2 wherein the nylon is nylon 6/12.
Claim 7
Dependent Claim
11 words
The polymer of claim 2 wherein the nylon is nylon 12.
Claim 8
Dependent Claim
11 words
The polymer of claim 2 wherein the nylon is nylon 11.
Claim 9
Dependent Claim
71 words
The copolymer of claim 1 wherein Z is a trivalent benzene ring, R 1 is ##STR18## and R 2 is ##STR19## and wherein the concentration range runs from about 30 mole percent of the R 1 containing units and about 70 mole percent of the R 2 containing units to about 70 mole percent of the R 1 containing units and about 30 mole percent of the R 2 containing units.
Claim 10
Dependent Claim
21 words
The copolymer of claim 2 wherein Z is a trivalent benzene ring, R 1 is ##STR20## and R 2 is ##STR21##
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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) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |