US4518754A
Expired / Lapsed
US
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Imido copolymers
Assignee: Rhone Poulenc Industries SA
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Filing: 1979-05-30
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Granted: 1985-05-21
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Expires: 1999-05-30
Abstract
Abstract Novel imido copolymers are prepared by copolymerizing: [i] a bis-maleimide of the structural formula: ##STR1## [ii] an olefinically unsaturated comonomer copolymerizable therewith. The subject copolymers are applicable to the production of a variety of useful shaped articles, coatings, laminates, foams, and the like.
Inventors
- 👤 Jean L. Locatelli
- 👤 Bernard Rollet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:05
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08G73/126; C08F; C08F222/00; C08F222/36; C08F222/40; C08F222/404; C08G73/125; C08G73/127
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
112 words
An imido copolymer consisting essentially of the reaction product of copolymerization between (i) a bis-maleimide having the structural formula (I): ##STR5## wherein A is phenylene or a divalent radical having the structural formula (II): ##STR6## in which T is --CH 2 --, --C(CH 3 ) 2 --, --O-- or --SO 2 --; and (ii) an olefinically unsaturated comonomer copolymerizable therewith, said comonomer (ii) displaying a degree of reactivity such that its resonance Q ranges from 0.01 to 0.7 and its polarity e is 0 or less and with the ratio of the number of imide functions to the number of molecules of the olefinically unsaturated comonomers (ii) ranging from 0.3 to 5.
Claim 2
Dependent Claim
112 words
An imido copolymer consisting essentially of the reaction product of copolymerization between (i) a bis-maleimide having the structural formula (I): ##STR5## wherein A is phenylene or a divalent radical having the structural formula (II): ##STR6## in which T is --CH 2 --, --C(CH 3 ) 2 --, --O-- or --SO 2 --; and (ii) an olefinically unsaturated comonomer copolymerizable therewith, said comonomer (ii) displaying a degree of reactivity such that its resonance Q ranges from 0.01 to 0.7 and its polarity e is 0 or less and with the ratio of the number of imide functions to the number of molecules of the olefinically unsaturated comonomers (ii) ranging from 0.3 to 5.
Claim 3
Dependent Claim
29 words
The copolymer as defined by claim 1, wherein the bis-maleimide (i) is selected from the group comprising N,N'-metaphenylene bis-maleimide, N,N',4,4'-diphenylether bis-maleimide, N,N',4,4'-diphenyl-2,2-propyl bis maleimide, N,N',4,4'-diphenylsulfone bis-maleimide and N,N',4,4'-diphenylmethane bis-maleimide.
Claim 4
Dependent Claim
14 words
The copolymer as defined by claim 2, wherein the bis-maleimide (i) is N,N',4,4'-diphenylmethane bis-maleimide.
Claim 5
Dependent Claim
38 words
The copolymer as defined by claim 1, the bis-maleimide (i) being in admixture with a mono-imide, the number of imide functions in said mono-imide being up to 30% of the total number of imide functions in said admixture.
Claim 6
Dependent Claim
31 words
The copolymer as defined by claim 1, said olefinically unsaturated comonomer (ii) being a member selected from the group consisting of an unsaturated ether, sulfide, ester, hydrocarbon, heterocycle and halo-derivative thereof.
Claim 7
Dependent Claim
16 words
The copolymer as defined by claim 5, said olefinically unsaturated comonomer (ii) being a vinyl ether.
Claim 8
Dependent Claim
24 words
The copolymer as defined by claim 6, said vinyl ether being selected from the group consisting of divinyl ether, n-butylvinyl ether and isobutylvinyl ether.
Claim 9
Dependent Claim
16 words
The copolymer as defined by claim 5, said olefinically unsaturated comonomer (ii) being a vinyl sulfide.
Claim 10
Dependent Claim
24 words
The copolymer as defined by claim 8, said vinyl sulfide being selected from the group consisting of divinyl sulfide, ethylvinyl sulfide and methylvinyl sulfide.
Claim 11
Dependent Claim
25 words
The copolymer as defined by claim 5, said olefinically unsaturated comonomer (ii) being an unsaturated ester of an aliphatic or aromatic monocarboxylic or polycarboxylic acid.
Claim 12
Dependent Claim
26 words
The copolymer as defined by claim 10, said carboxylic acid being selected from the group consisting of formic, acetic, propionic, butyric, caproic, malonic, oxalic and benzoic.
Claim 13
Dependent Claim
36 words
The copolymer as defined by claim 11, said unsaturated ester being selected from the group consisting of vinyl acetate, vinyl formate, vinyl chloroacetate, vinyl dichloroacetate, methallyl acetate, isopropenyl acetate, vinyl benzoate, ethylvinyl oxalate and dimethallyl oxalate.
Claim 14
Dependent Claim
19 words
The copolymer as defined by claim 5, said olefinically unsaturated comonomer (ii) being an ethylenically or acetylenically unsaturated hydrocarbon.
Claim 15
Dependent Claim
31 words
The copolymer as defined by claim 13, said hydrocarbon being selected from the group consisting of ethylene, isobutylene, oligobutene, pentene, hexene, indene, stilbene, vinylacetylene, phenylacetylene, naphthyleneacetylene, norborene, vinylnorborene, vinylcyclohexene and dicyclopentadiene.
Claim 16
Dependent Claim
16 words
The copolymer as defined by claim 5, said olefinically unsaturated comonomer (ii) being an N-vinyl heterocycle.
Claim 17
Dependent Claim
21 words
The copolymer as defined by claim 15, said N-vinyl heterocycle being selected from the group consisting of N-vinylcarbazol, N-vinylcaprolactam and N-vinyl-2-oxazolidine.
Claim 18
Dependent Claim
14 words
The copolymer as defined by claim 1, said ratio ranging from 0.5 to 3.
Claim 19
Dependent Claim
15 words
The copolymer as defined by claims 1 or 5, the same being a thermoset copolymer.
Claim 20
Dependent Claim
11 words
A shaped article comprising the copolymer as defined by claim 18.
Claim 21
Dependent Claim
27 words
A process for preparing the copolymer as defined by claim 1, comprising heating said comonomers (i) and (ii) to a temperature of from 50° to 250° C.
Claim 22
Dependent Claim
17 words
The process as defined by claim 20, comprising bulk copolymerizing said comonomers until a homogeneous liquid results.
Claim 23
Dependent Claim
19 words
The process as defined by claim 21, said heating being at a temperature not in excess of 160° C.
Claim 24
Dependent Claim
16 words
The process as defined by claim 20, said comonomers being admixed with an inert organic diluent.
Claim 25
Dependent Claim
17 words
The process as defined by claim 20, further comprising heating the copolymer resulting therefrom to hardening temperatures.
Claim 26
Dependent Claim
15 words
The process as defined by claim 20, wherein said comonomers are homogenized prior to heating.
Claim 27
Dependent Claim
11 words
The process as defined by claim 20, comprising a solution copolymerization.
Claim 28
Dependent Claim
11 words
The process as defined by claim 20, comprising a suspension copolymerization.
Claim 29
Dependent Claim
26 words
The process as defined by claim 20, wherein the heating of the comonomers (i) and (ii) is conducted in the presence of a free radical catalyst.
Claim 30
Dependent Claim
25 words
The process as defined by claim 20, wherein the heating of the comonomers (i) and (ii) is conducted in the presence of a copolymerization catalyst.
Claim 31
Dependent Claim
13 words
A coating composition comprising the copolymer as defined by claims 1 or 5.
Claim 32
Dependent Claim
13 words
An adhesive composition comprising the copolymer as defined by claims 1 or 5.
Claim 33
Dependent Claim
117 words
An imido copolymer, comprising the reaction product of copolymerization obtained upon reacting the monomers consisting essentially of (i) a bis-maleimide having the structural formula (I): ##STR7## wherein A is phenylene or a divalent radical having the structural formula (II): ##STR8## in which T is --CH 2 --, --C(CH 3 ) 2 --, --O-- or --SO 2 ; and (ii) an olefinically unsaturated comonomer copolymerizable therewith, said comonomer (ii) displaying a degree of reactivity such that its resonance Q ranges from 0.01 to 0.7 and its polarity e is 0 or less, and with the ratio of the number of imide functions to the number of molecules of the olefinically unsaturated comonomer (ii) ranging from 0.3 to 5.
Claim 34
Dependent Claim
117 words
An imido copolymer, comprising the reaction product of copolymerization obtained upon reacting the monomers consisting essentially of (i) a bis-maleimide having the structural formula (I): ##STR7## wherein A is phenylene or a divalent radical having the structural formula (II): ##STR8## in which T is --CH 2 --, --C(CH 3 ) 2 --, --O-- or --SO 2 ; and (ii) an olefinically unsaturated comonomer copolymerizable therewith, said comonomer (ii) displaying a degree of reactivity such that its resonance Q ranges from 0.01 to 0.7 and its polarity e is 0 or less, and with the ratio of the number of imide functions to the number of molecules of the olefinically unsaturated comonomer (ii) ranging from 0.3 to 5.
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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) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |