Patent US4730030A successfully refreshed from Google Patents.
US4730030A
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Arylcyclobutane/dienophile copolymer
Assignee: Dow Chemical Co
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Filing: 1986-07-25
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Granted: 1988-03-08
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Expires: 2006-07-25
Abstract
Abstract Copolymer compositions comprise, in polymerized form, a comonomer containing at least two polymerizable arylcyclobutane moieties, and a comonomer containing at least two polymerizable dienophilic moieties, such as maleimide moieties.
Inventors
- 👤 Stephen F. Hahn
- 👤 Robert A. Kirchhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:57
CPC Classifications
C; C08; C08G; C08G61/00; C08F; C08F212/00; C08F212/02; C08F212/32
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
26 words
A copolymer composition comprising, in polymerized form, a comonomer containing at least two polymerizable arylcyclobutane moieties, and a comonomer containing at least two polymerizable dienophilic moieties.
Claim 2
Dependent Claim
26 words
A copolymer composition comprising, in polymerized form, a comonomer containing at least two polymerizable arylcyclobutane moieties, and a comonomer containing at least two polymerizable dienophilic moieties.
Claim 3
Dependent Claim
13 words
The copolymer composition of claim 1 wherein the arylcyclobutane moieties are benzocyclobutane moieties.
Claim 4
Dependent Claim
13 words
The copolymer composition of claim 2 wherein the dienophilic moieties are alkenyl moieties.
Claim 5
Dependent Claim
15 words
The copolymer composition of claim 2 wherein the dienophilic moieties are α,62 -unsaturated carbonyl moieties.
Claim 6
Dependent Claim
13 words
The copolymer composition of claim 2 wherein the dienophilic moieties are maleimide moieties.
Claim 7
Dependent Claim
32 words
The copolymer composition of claim 1 wherein the comonomer containing at least two polymerizable arylcyclobutane moieties is poly(styrene-co-4-vinylbenzocyclobutane) and the comonomer containing at least two polymerizable dienophilic moieties is 4,4'-diphenyl ether bismaleimide.
Claim 8
Dependent Claim
22 words
The copolymer composition of claim 5 wherein the ratio of amount of the maleimide-containing monomer to benzocyclobutane-containing monomer is greater than 1.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-08 | 1991-09-07 | 1992-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-08 | 1995-09-07 | 1996-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-08 | 1999-09-07 | 2000-03-08 | $7700.00 | Window Closed / Lapsed |