US4624989A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic elastomers containing cross-linked epihalohydrin rubbers
Assignee: Hercules LLC
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Filing: 1986-01-31
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Granted: 1986-11-25
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Expires: 2006-01-31
Abstract
Abstract Disclosed is a thermoplastic elastomer containing a cross-linked polyepihalohydrin rubber made by simultaneously cross-linking the rubber and blending the rubber with a crystalline polyolefin in the presence of a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight.
Inventors
- 👤 Dominic A. Berta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:55
CPC Classifications
C; C08; C08L; C08L15/00; C08L15/02; C08L23/00; C08L23/02; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/09; C08L23/10; C08L23/14; C08L23/26; C08L23/28; C08L23/286; C08L61/00; C08L61/20; C08L71/00; C08L71/02; C08L71/03; C08L2312/00
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
69 words
A composition comprising a substantially homogenous blend of a cross-linked polyepihalohydrin rubber, a crystalline polyolefin that is a polymerized mixture of one or more olefins selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 2-methyl-1-propene, 3-methyl-1-pentene, 4-methyl-1-pentene, and 5-methyl-1-hexene, and a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight, wherein said hydrocarbon is a chlorinated paraffin, chlorinated polyethylene, or chlorinated polyisoprene.
Claim 2
Dependent Claim
69 words
A composition comprising a substantially homogenous blend of a cross-linked polyepihalohydrin rubber, a crystalline polyolefin that is a polymerized mixture of one or more olefins selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 2-methyl-1-propene, 3-methyl-1-pentene, 4-methyl-1-pentene, and 5-methyl-1-hexene, and a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight, wherein said hydrocarbon is a chlorinated paraffin, chlorinated polyethylene, or chlorinated polyisoprene.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein the cross-linked polyepihalohydrin rubber is cross-linked polyepichlorohydrin.
Claim 4
Dependent Claim
19 words
The composition of claim 1, wherein the cross-linked polyepihalohydrin rubber is a cross-linked copolymer of epichlorohydrin and ethylene oxide.
Claim 5
Dependent Claim
21 words
The composition of claim 1, wherein the cross-linked polyepihalohydrin rubber is a cross-linked terpolymer of epichlorohydrin, ethylene oxide, and allylglycidyl ether.
Claim 6
Dependent Claim
15 words
The composition of claim 1, wherein the polyolefin is a copolymer of propylene and 1-butene.
Claim 7
Dependent Claim
10 words
The composition of claim 1, wherein the polyolefin is polypropylene.
Claim 8
Dependent Claim
10 words
The composition of claim 1, wherein the polyolefin is polyethylene.
Claim 9
Dependent Claim
12 words
The composition of claim 1, wherein the chlorinated hydrocarbon is chlorinated polyethylene.
Claim 10
Dependent Claim
21 words
The composition of claim 1, wherein the chlorinated hydrocarbon has a chlorine content from about 25% to about 42% by weight.
Claim 11
Independent Claim
118 words
A method making a thermoplastic elastomer comprising the steps of (a) blending a polyepihalohydrin rubber and a crystalline polyolefin that is a polymerized mixture of one or more olefins selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 2-methyl-1-propene, 3-methyl-1-pentene, 4-methyl-1-pentene, and 5-methyl-1-hexene in the presence of a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight, wherein said hydrocarbon is a chlorinated paraffin, chlorinated polyethylene, or chlorinated polyisoprene, and (b) simultaneously cross-linking the polyepihalohydrin rubber by heating the blend in the presence of a curing system that cross-links the polyepihalohydrin rubber in preference to the polyolefin and the hydrocarbon and comprises a cross-linking agent and at least one curing accelerator.
Claim 12
Independent Claim
118 words
A method making a thermoplastic elastomer comprising the steps of (a) blending a polyepihalohydrin rubber and a crystalline polyolefin that is a polymerized mixture of one or more olefins selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 2-methyl-1-propene, 3-methyl-1-pentene, 4-methyl-1-pentene, and 5-methyl-1-hexene in the presence of a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight, wherein said hydrocarbon is a chlorinated paraffin, chlorinated polyethylene, or chlorinated polyisoprene, and (b) simultaneously cross-linking the polyepihalohydrin rubber by heating the blend in the presence of a curing system that cross-links the polyepihalohydrin rubber in preference to the polyolefin and the hydrocarbon and comprises a cross-linking agent and at least one curing accelerator.
Claim 13
Dependent Claim
87 words
A cross-linkable composition comprising a polyepihalohydrin rubber, a crystalline polyolefin that is a polymerized mixture of one or more olefins selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 2-methyl-1-propene, 3-methyl-1-pentene, 4-methyl-1-pentene, and 5-methyl-1-hexene, a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight, wherein said hydrocarbon is a chlorinated paraffin, chlorinated polyethylene, or chlorinated polyisoprene, and a curing system that cross-links the rubber in preference to the hydrocarbon and comprises a cross-linking agent and at least one curing accelerator.
Claim 14
Dependent Claim
87 words
A cross-linkable composition comprising a polyepihalohydrin rubber, a crystalline polyolefin that is a polymerized mixture of one or more olefins selected from the group consisting of ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 2-methyl-1-propene, 3-methyl-1-pentene, 4-methyl-1-pentene, and 5-methyl-1-hexene, a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight, wherein said hydrocarbon is a chlorinated paraffin, chlorinated polyethylene, or chlorinated polyisoprene, and a curing system that cross-links the rubber in preference to the hydrocarbon and comprises a cross-linking agent and at least one curing accelerator.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |