US4405770A
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Novel polyimides, and polyamic acid and ester intermediates thereof
Assignee: Ingredion Inc
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Filing: 1981-08-12
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Granted: 1983-09-20
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Expires: 2001-08-12
Abstract
Abstract Novel polyimides, optionally end-capped with polymerizable or inert groups, and the polyamic acid or ester intermediates thereof are prepared by reacting a tetracarboxylic acid compound (e.g. pyromellitic dianhydride or 3,3',4,4'-benzophenone tetracarboxylic acid dianhydride or its methyl diester) with diamines having the general formula ##STR1## wherein Z is oxygen or sulfur, X and/or Y are carbonyl or carbinol groups, the amine groups may be in the 2-, 3-, and/or 4-position, and isomerism is present when X and/or Y is a carbinol group. The polyimides may be end-capped by reaction, during or after their formation, with polymerizable groups such as 3-aminophenyl acetylene or 3,6-endomethylene-1,2,3,6-tetrahydrophthalic anhydride. The diamines are novel classes of amines when Z is sulfur and when Z is oxygen and X, Y, or X and Y are carbinol groups.
Inventors
- 👤 Jules E. Schoenberg
- 👤 Stephen P. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:15
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1057; C08G73/1064; C08G73/1046; C08G73/105; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
56 words
A polyimide resin, consisting essentially of a chain of chain of recurring units of the formula: ##STR13## wherein R is a tetravalent aliphatic, cycloaliphatic, or aromatic radical; Z is oxygen or sulfur; X and Y are carbonyl or carbinol groups and X and Y may be the same or different; and n is greater than 1.
Claim 2
Dependent Claim
56 words
A polyimide resin, consisting essentially of a chain of chain of recurring units of the formula: ##STR13## wherein R is a tetravalent aliphatic, cycloaliphatic, or aromatic radical; Z is oxygen or sulfur; X and Y are carbonyl or carbinol groups and X and Y may be the same or different; and n is greater than 1.
Claim 3
Dependent Claim
69 words
A polyamic resin, consisting essentially of a chain of recurring units of the formula: ##STR14## wherein R is a tetravalent aliphatic, cycloaliphatic, or aromatic radical; R 1 and R 2 are hydrogen or the same or different hydrocarbon monovalent radicals; Z is oxygen or sulfur; X and Y are carbonyl or carbinol groups and X and Y may be the same or different; and n is greater than 1.
Claim 4
Dependent Claim
69 words
A polyamic resin, consisting essentially of a chain of recurring units of the formula: ##STR14## wherein R is a tetravalent aliphatic, cycloaliphatic, or aromatic radical; R 1 and R 2 are hydrogen or the same or different hydrocarbon monovalent radicals; Z is oxygen or sulfur; X and Y are carbonyl or carbinol groups and X and Y may be the same or different; and n is greater than 1.
Claim 5
Dependent Claim
40 words
The resin of claim 1 or 2, wherein Z is oxygen or sulfur and X and Y are carbonyl groups or wherein Z is oxygen and X and Y are carbinol groups or a mixture of carbonyl and carbinol groups.
Claim 6
Dependent Claim
112 words
The resin of claim 1 or 2, wherein R is the tetravalent radical having the formula ##STR15## X and Y are carbonyl groups, and both nitrogens are in the 3-position; or wherein R is as defined above, Z is oxygen, X and Y are carbinol groups, and both nitrogens are in the 3-position; or wherein R is as defined above, Z is oxygen, X and Y are carbonyl groups, carbinol groups, or mixtures of carbonyl and carbinol groups, and both nitrogens are in the 4-position; or wherein R is the tetravalent radical having the formula ##STR16## Z is oxygen, X and Y are carbonyl groups, and both nitrogens are in the 3-position.
Claim 7
Dependent Claim
76 words
An end-capped polyimide resin, having one or more of the formulas: ##STR17## R is a tetravalent aliphatic, cycloaliphatic, or aromatic radical; or polymerizable is an inert of polymerizable monovalent aliphatic, cycloaliphatic, or aromatic radical; or polymerizable is an inert or polymerizable divalent aliphatic, cycloaliphatic, or aromatic radical; Z is oxygen or sulfur; X and Y are carbonyl or carbinol groups and X and Y may be the same or different; and m is one or greater.
Claim 8
Dependent Claim
76 words
An end-capped polyimide resin, having one or more of the formulas: ##STR17## R is a tetravalent aliphatic, cycloaliphatic, or aromatic radical; or polymerizable is an inert of polymerizable monovalent aliphatic, cycloaliphatic, or aromatic radical; or polymerizable is an inert or polymerizable divalent aliphatic, cycloaliphatic, or aromatic radical; Z is oxygen or sulfur; X and Y are carbonyl or carbinol groups and X and Y may be the same or different; and m is one or greater.
Claim 9
Dependent Claim
100 words
An end-capped polyamic resin, having one or more of the formulas: ##STR18## R is a tetravalent aliphatic, cycloaliphatic, or aromatic radical; R 1 and R 2 are hydrogen or a monovalent hydrocarbon radical and R 1 and R 2 may be the same or different; R 3 is an inert or polymerizable monovalent aliphatic cycloaliphatic, or aromatic radical; R 4 is an inert or polymerizable divalent aliphatic, cycloaliphatic, or aromatic radical; Z is oxygen or sulfur; X and Y are carbonyl or carbinol groups and X an Y may be the same or different; and m is one or greater.
Claim 10
Dependent Claim
100 words
An end-capped polyamic resin, having one or more of the formulas: ##STR18## R is a tetravalent aliphatic, cycloaliphatic, or aromatic radical; R 1 and R 2 are hydrogen or a monovalent hydrocarbon radical and R 1 and R 2 may be the same or different; R 3 is an inert or polymerizable monovalent aliphatic cycloaliphatic, or aromatic radical; R 4 is an inert or polymerizable divalent aliphatic, cycloaliphatic, or aromatic radical; Z is oxygen or sulfur; X and Y are carbonyl or carbinol groups and X an Y may be the same or different; and m is one or greater.
Claim 11
Dependent Claim
31 words
The resin resulting from the polymerization of the composition of claim 5 or 6, wherein R 3 , R 4 , or R 3 and R 4 are polymerizable organic radicals.
Claim 12
Dependent Claim
76 words
The resin of claim 5 or 6, wherein R is the tetravalent radical having the formula ##STR19## Z is oxygen, X and Y are carbonyl groups, both nitrogens are in the 3-position, and R 3 is the monovalent radical having the formula ##STR20## or wherein R is as defined above, Z is oxygen, X and Y are carbonyl groups, both nitrogens are in the 3-position, and R 4 is the divalent radical having the formula ##STR21##
Claim 13
Dependent Claim
12 words
The resin resulting from the polymerization of the composition of claim 8.
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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) | 1986-09-19 | 1987-03-21 | 1987-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-09-19 | 1991-03-21 | 1991-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-09-19 | 1995-03-21 | 1995-09-20 | $7700.00 | Window Closed / Lapsed |