US4431776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fast-curing olefin copolymer rubber compositions
Assignee: EIDP Inc
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Filing: 1982-07-01
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Granted: 1984-02-14
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Expires: 2002-07-01
Abstract
Abstract An elastomeric composition comprising an EPDM copolymer rubber; a sulfur curative for the copolymer rubber; about 5-15 parts by weight per 100 parts copolymer rubber of a chlorosulfonated polyolefin which contains 20-50 weight percent chlorine and 0.2-1.5 weight percent sulfur; and about 0.25-1 parts by weight per 100 parts copolymer rubber of a diamine-generating curing agent.
Inventors
- 👤 Wolfgang Honsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:51
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/0008; C08K5/0025; C08K5/04; C08K5/09; C08K5/29; C08L; C08L23/00; C08L23/02; C08L23/16; C08L23/26; C08L23/32; C08L23/34; C08L91/00; C08L2312/00; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
59 words
An elastomeric composition comprising an ethylene, propylene, nonconjugated diene copolymer rubber; a sulfur curative for the copolymer rubber; about 5-15 parts by weight per 100 parts copolymer rubber of a chlorosulfonated polyolefin which contains 20-50 weight percent chlorine and 0.2-1.5 weight percent sulfur; and about 0.25-1 parts by weight per 100 parts copolymer rubber of a diamine-generating curing agent.
Claim 2
Dependent Claim
59 words
An elastomeric composition comprising an ethylene, propylene, nonconjugated diene copolymer rubber; a sulfur curative for the copolymer rubber; about 5-15 parts by weight per 100 parts copolymer rubber of a chlorosulfonated polyolefin which contains 20-50 weight percent chlorine and 0.2-1.5 weight percent sulfur; and about 0.25-1 parts by weight per 100 parts copolymer rubber of a diamine-generating curing agent.
Claim 3
Dependent Claim
50 words
An elastomeric composition of claim 1 wherein the diamine-generating curing agent has the formula: (RCH═N).sub.2 A, (RR'--C═N).sub.2 A or .sup.+ NH.sub.3 --A--NHCOO.sup.- where A is an aliphatic or cycloaliphatic radical containing 2-15 carbon atoms and R and R' are alkyl, cycloalkyl, aryl, aralkyl, or aralkenyl radicals containing 2-10 carbon atoms.
Claim 4
Dependent Claim
34 words
An elastomeric composition of claim 1 where the diamine-generating curing agents are diamine carbamates having the formula + NH 3 --A--NHCOO - where A is an aliphatic or cycloaliphatic radical containing 2-15 carbon atoms.
Claim 5
Dependent Claim
14 words
An elastomeric composition of claim 1 where the diamine-generating curing agent is hexamethylenediamine carbamate.
Claim 6
Dependent Claim
13 words
An elastomeric composition of claim 1 where the diamine-generating curing agent is [4,4'-methylenebis-(cyclohexylamine)carbamate].
Claim 7
Dependent Claim
13 words
An elastomeric composition of claim 1 where the diamine-generating curing agent is [N,N'-dicinnamylidene-1,6-hexanediamine].
Claim 8
Dependent Claim
15 words
An elastomeric composition of claims 1 or 2 where the chlorosulfonated polyolefin is chlorosulfonated polyethylene.
Claim 9
Dependent Claim
25 words
An elastomeric composition of claims 1 or 7 where the nonconjugated diene is 1,4-hexadiene and the diamine-generating curing agent is hexamethylene diamine carbamate or [4,4'-methylenebis(cyclohexylamine)carbamate].
Claim 10
Dependent Claim
74 words
In a process for preparing a curable composition which comprises intimately mixing an ethylene, propylene, nonconjugated diene copolymer rubber; a sulfur curative for the copolymer rubber; about 5-15 parts by weight per 100 parts copolymer rubber of chlorosulfonated polyolefin which contains 20-50 weight percent chlorine and 0.2-1.5 weight percent sulfur; the improvement which comprises incorporating into the copolymer rubber about 0.25-1 parts by weight per 100 parts copolymer rubber of a diamine-generating curing agent.
Claim 11
Dependent Claim
74 words
In a process for preparing a curable composition which comprises intimately mixing an ethylene, propylene, nonconjugated diene copolymer rubber; a sulfur curative for the copolymer rubber; about 5-15 parts by weight per 100 parts copolymer rubber of chlorosulfonated polyolefin which contains 20-50 weight percent chlorine and 0.2-1.5 weight percent sulfur; the improvement which comprises incorporating into the copolymer rubber about 0.25-1 parts by weight per 100 parts copolymer rubber of a diamine-generating curing agent.
Claim 12
Dependent Claim
50 words
The process of claim 9 wherein diamine-generating curing agent is selected from the group: (RCH═N).sub.2 A, (RR'--C═N).sub.2 A or .sup.+ NH.sub.3 --A--NHCOO.sup.- where A is an aliphatic or cycloaliphatic radical containing 2-15 carbon atoms and R and R' are alkyl, cycloalkyl, aryl, aralkyl, or aralkenyl radicals containing 2-10 carbon atoms.
Claim 13
Dependent Claim
33 words
The process of claim 9 wherein the diamine-generating curing agents are diamine carbamates having the formula + NH 3 --A--NHCOO - where A is an aliphatic or cycloaliphatic radical containing 2-15 carbon atoms.
Claim 14
Dependent Claim
13 words
The process of claim 9 wherein the diamine-generating curing agent is hexamethylenediamine carbamate.
Claim 15
Dependent Claim
13 words
The process of claim 9 where the diamine-generating curing agent is [4,4'-methylenebis(cyclohexylamine) carbamate].
Claim 16
Dependent Claim
12 words
The process of claim 9 where the diamine-generating curing agent is [N,N'-dicinnamylidene-1,6-hexanediamine].
Claim 17
Dependent Claim
14 words
The process of claims 9 or 10 wherein the chlorosulfonated polyolefin is chlorosulfonated polyethylene.
Claim 18
Dependent Claim
25 words
The process of claims 9 or 15 wherein the nonconjugated diene is 1,4-hexadiene, and the diamine-generating curing agent is hexamethylene diamine carbamate or [4,4'-methylenebis(cyclohexylamine) carbamate].
References Cited (Backward Citations)
US3001965A
Cited
US3104235A
Cited
US3278480A
Cited
US3351677A
Cited
US3565974A
Cited
FR2265816A1
Cited
US4125509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-13 | 1987-08-15 | 1988-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-13 | 1991-08-15 | 1992-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-13 | 1995-08-15 | 1996-02-14 | $7700.00 | Window Closed / Lapsed |