US4166168A
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Polymerization products of acetylene-terminated polyimide derivatives
Assignee: Plastics Engineering Co
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Filing: 1978-07-25
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Granted: 1979-08-28
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Expires: 1998-07-25
Abstract
Abstract Novel, unsaturated polyimide-polyester polymerization products and processes for their preparation are disclosed herein. The polyimide-esters from which the polymerization products are derived are derivatives of anhydride-terminated aromatic polyimides, from which they are prepared by esterification to provide unsaturated ester groups having a terminal --C.tbd.CH group. These new compositions are crosslinked, insoluble, infusible polymers produced without by-product formation.
Inventors
- 👤 Gaetano F. D'Alelio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:46
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/16; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31551; Y10T428/31623; Y10T428/31652
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
134 words
An addition polymerization product of a polyimide-ester of the formula: ##STR26## wherein: Ar' is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar' radical except that in the case of the Ar' being a naphthalene radical one or both pairs of the carbonyl groups may be attached to peri carbon atoms; Ar is a divalent aromatic organic radical, n is an integer of at least one; R' is an organic moiety containing 2 to 14 carbon atoms and having a terminal CH.tbd.C-- structure; Y is OR or X; R is H,R' or the residue of an alcohol other than R'OH containing one to 18 carbon atoms; and X is a halide radical.
Claim 2
Dependent Claim
134 words
An addition polymerization product of a polyimide-ester of the formula: ##STR26## wherein: Ar' is a tetravalent aromatic organic radical, the four carbonyl groups being attached directly to separate carbon atoms and each pair of carbonyl groups being attached to adjacent carbon atoms in the Ar' radical except that in the case of the Ar' being a naphthalene radical one or both pairs of the carbonyl groups may be attached to peri carbon atoms; Ar is a divalent aromatic organic radical, n is an integer of at least one; R' is an organic moiety containing 2 to 14 carbon atoms and having a terminal CH.tbd.C-- structure; Y is OR or X; R is H,R' or the residue of an alcohol other than R'OH containing one to 18 carbon atoms; and X is a halide radical.
Claim 3
Dependent Claim
11 words
The polymerization product of claim 1 in which Y is OR.
Claim 4
Dependent Claim
13 words
The polymerization product of claim 2 in which R' is --CH 2 C.tbd.CH.
Claim 5
Dependent Claim
17 words
The polymerization product of claim 2 in which R' is --CH 2 C 6 H 4 C.tbd.CH.
Claim 6
Dependent Claim
19 words
The polymerization product of claim 2 in which R' is --CH 2 C 6 H 4 CH 2 C.tbd.CH.
Claim 7
Dependent Claim
11 words
The polymerization product of claim 2 in which R is H.
Claim 8
Dependent Claim
11 words
The polymerization product of claim 3 in which R is R'.
Claim 9
Dependent Claim
11 words
The polymerization product of claim 4 in which R is R'.
Claim 10
Dependent Claim
11 words
The polymerization product of claim 5 in which R is R'.
Claim 11
Dependent Claim
13 words
The polymerization product of claim 2 in which n is at least 2.
Claim 12
Dependent Claim
19 words
The polymerization product of claim 1 in which Ar' is a radical selected from the class consisting of: ##STR27##
Claim 13
Dependent Claim
11 words
The polymerization product of claim 1 in which Ar' is ##STR28##
Claim 14
Dependent Claim
51 words
The polymerization product of claim 1 in which the diamine from which it is prepared is selected from the class consisting of: 1,3- and 1,4-(NH 2 ) 2 benzene 2,3-; 2,5-; 2,6- and 3,5-(NH 2 ) 2 toluene; 3,3'-; 4,4'- and 3,4'-methylene dianiline; 4,4'-; 3,3'- and 3,4'-oxydianiline; 4,4'-; 3,3'- and 3,4'-sulfonyldianiline;
Claim 15
Dependent Claim
8 words
3-; 1,4- and 1,2-bis(3-aminophenoxy)benzene; and 1,3- and 1,4-bis(4-aminophenoxy)benzene.
Claim 16
Dependent Claim
8 words
3-; 1,4- and 1,2-bis(3-aminophenoxy)benzene; and 1,3- and 1,4-bis(4-aminophenoxy)benzene.
Claim 17
Dependent Claim
14 words
The polymerization product of claim 13 in which the diamine is a methylene dianiline.
Claim 18
Dependent Claim
14 words
The polymerization product of claim 13 in which the diamine is a sulfonyl dianiline.
Claim 19
Dependent Claim
13 words
The polymerization product of claim 13 in which the diamine is an oxydianiline.
Claim 20
Dependent Claim
13 words
The polymerization product of claim 13 in which the diamine is 2,4-toluene diamine.
Claim 21
Dependent Claim
18 words
The process of preparing the polymerization product of claim 1 which comprises heating the polyimide-ester of claim 1.
Claim 22
Dependent Claim
19 words
The process of preparing the polymerization product of claim 2 which comprises heating the polyimide ester of claim 2.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-08-27 | 1983-02-26 | 1983-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-27 | 1987-02-26 | 1987-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-27 | 1991-02-26 | 1991-08-28 | $7700.00 | Window Closed / Lapsed |