US4394459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast-curing foamable composition based on ethylene terpolymers
Assignee: EIDP Inc
•
Filing: 1982-09-02
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Granted: 1983-07-19
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Expires: 2002-09-02
Abstract
Abstract A crosslinked closed-cell microcellular article of a terpolymer of ethylene, carbon monoxide, and a softening monomer.
Inventors
- 👤 John Rys-Sikora
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:58
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J9/10; C08J9/0061; C08J2323/00; C08J2323/02; C08J2323/04; C08J2323/08; C08J2407/00; Y; Y10; Y10S; Y10S521/00; Y10S521/909
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
90 words
A crosslinked closed-cell microcellular foamed article with bulk density of at least 0.02 g/cm 3 comprising a terpolymer of (i) ethylene; (ii) 10 to 40 percent by weight of a softening monomer selected from the group consisting of alkyl acrylates and methylacrylates having linear or branched alkyl groups of 1 to 18 carbon atoms, vinyl esters of saturated carboxylic acids having 1 to 18 carbon atoms and vinyl alkyl ethers wherein the alkyl group contains 1 to 18 carbon atoms; and (iii) 1.0 to 20 percent by weight carbon monoxide.
Claim 2
Dependent Claim
90 words
A crosslinked closed-cell microcellular foamed article with bulk density of at least 0.02 g/cm 3 comprising a terpolymer of (i) ethylene; (ii) 10 to 40 percent by weight of a softening monomer selected from the group consisting of alkyl acrylates and methylacrylates having linear or branched alkyl groups of 1 to 18 carbon atoms, vinyl esters of saturated carboxylic acids having 1 to 18 carbon atoms and vinyl alkyl ethers wherein the alkyl group contains 1 to 18 carbon atoms; and (iii) 1.0 to 20 percent by weight carbon monoxide.
Claim 3
Dependent Claim
17 words
The foamed article of claim 1 wherein is present less than 50 percent by weight natural rubber.
Claim 4
Dependent Claim
30 words
The foamed article of claim 1 or claim 2 wherein the softening monomer is selected from the group consisting of vinyl acetate, methyl acrylate, isobutyl acrylate and methyl vinyl ether.
Claim 5
Dependent Claim
31 words
The foamed article of claim 1 or claim 2 wherein the softening monomer is vinyl acetate present in an amount equal to 15 to 30 percent by weight of the terpolymer.
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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) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |