Patent US4172939A successfully refreshed from Google Patents.
US4172939A
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Vulcanizable ethylene/vinyl acetate/carbon monoxide terpolymers
Assignee: EIDP Inc
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Filing: 1978-08-29
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Granted: 1979-10-30
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Expires: 1998-08-29
Abstract
Abstract A vulcanizable composition comprising an ethylene/vinyl acetate/carbon monoxide terpolymer, said terpolymer containing about 5-30%, by weight, carbon monoxide, and having dispersed therein a vulcanizing agent of elemental sulfur or a compound that releases sulfur at vulcanization temperatures. The cured elastomer is useful for making hose, belts, wire coverings and other elastomeric articles in a conventional manner.
Inventors
- 👤 George L. Hoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:14
CPC Classifications
C; C08; C08G; C08G67/00; C08G67/02
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
44 words
A vulcanizable composition comprising an ethylene/vinyl acetate/carbon monoxide terpolymer containing about 15-60% by weight vinyl acetate and about 5-30% by weight carbon monoxide and, dispersed therein, a vulcanizing agent selected from elemental sulfur, a compound that releases sulfur at vulcanization temperatures and mixtures thereof.
Claim 2
Dependent Claim
44 words
A vulcanizable composition comprising an ethylene/vinyl acetate/carbon monoxide terpolymer containing about 15-60% by weight vinyl acetate and about 5-30% by weight carbon monoxide and, dispersed therein, a vulcanizing agent selected from elemental sulfur, a compound that releases sulfur at vulcanization temperatures and mixtures thereof.
Claim 3
Dependent Claim
20 words
A vulcanizable composition of claim 1 wherein the terpolymer contains, by weight, about 40-80% ethylene and about 15-60% vinyl acetate.
Claim 4
Dependent Claim
41 words
A vulcanizable composition of claim 2 wherein the amount of vulcanizing agent in the terpolymer is about 0.2-5 parts sulfur per 100 parts terpolymer or about 0.6-15 parts per 100 parts terpolymer of a compound that releases sulfur at vulcanization temperatures.
Claim 5
Dependent Claim
15 words
A vulcanizable composition of claim 2 containing about 0.2-5 parts sulfur per 100 parts terpolymer.
Claim 6
Dependent Claim
23 words
A vulcanizable composition of claim 2 containing about 0.6-15 parts of a compound that releases sulfur at vulcanization temperatures per 100 parts terpolymer.
Claim 7
Dependent Claim
10 words
A vulcanizable composition of claim 2 containing an organic accelerator.
Claim 8
Dependent Claim
13 words
A vulcanizable composition of claim 5 wherein the vulcanizing agent is dipentamethylenethiuram hexasulfide.
Claim 9
Dependent Claim
11 words
A vulcanizable composition of claim 6 wherein the accelerator is di-o-tolylguanidine.
Claim 10
Dependent Claim
13 words
A vulcanizable composition of claim 2 wherein the terpolymer contains 5-15% carbon monoxide.
Claim 11
Dependent Claim
24 words
A vulcanizable composition of claim 3 wherein the terpolymer contains, by weight, about 60-70% ethylene, about 20-35% vinyl acetate and about 5-15% carbon monoxide.
Claim 12
Dependent Claim
14 words
A vulcanizable composition of claim 5 wherein the vulcanizing agent is tetraethyl thiuram disulfide.
References Cited (Backward Citations)
US2495286A
Cited
US3780140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-29 | 1983-04-30 | 1983-10-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-29 | 1987-04-30 | 1987-10-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-29 | 1991-04-30 | 1991-10-30 | $7700.00 | Window Closed / Lapsed |