US4810752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halobutyl thermoplastic elastomer
Assignee: West Pharmaceutical Services Inc
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Filing: 1988-05-17
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Granted: 1989-03-07
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Expires: 2008-05-17
Abstract
Abstract A thermoplastic elastomer composition is disclosed, comprising a halobutyl rubber cured by dynamic vulcanization with a multifunctional amine curing agent. The cure is effected in the presence of at least 20 parts of a mixture formed from 10 to 60 parts of a polyolefin and 1 to 90 parts of a thermoplastic elastomer. The parts based on 100 parts by weight of said rubber.
Inventors
- 👤 Ghawamedin Bayan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:49
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08L; C08L23/00; C08L23/26; C08L23/28; C08L23/283
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
80 words
A thermoplastic elastomer composition comprising: a halobutyl rubber cured by dynamic vulcanization with a multifunctional amine curing agent, said cure being effected in the presence of at least 20 parts of a mixture formed from 10 to 60 parts of a polyolefin and 1 to 90 parts of a thermoplastic elastomers selected from the group consisting of polyesters and block copolymers having terminal polystyrene units and olefin elastomeric mid block units, said parts based on 100 parts of said rubber.
Claim 2
Dependent Claim
80 words
A thermoplastic elastomer composition comprising: a halobutyl rubber cured by dynamic vulcanization with a multifunctional amine curing agent, said cure being effected in the presence of at least 20 parts of a mixture formed from 10 to 60 parts of a polyolefin and 1 to 90 parts of a thermoplastic elastomers selected from the group consisting of polyesters and block copolymers having terminal polystyrene units and olefin elastomeric mid block units, said parts based on 100 parts of said rubber.
Claim 3
Dependent Claim
19 words
The composition of claim 1, wherein said thermoplastic elastomer is selected from the group consisting of SEBS and polyesters.
Claim 4
Dependent Claim
20 words
The composition of claim 2, wherein the amount of said thermoplastic elastomer ranges from about 18 to about 50 parts.
Claim 5
Dependent Claim
11 words
The composition of claim 3, wherein said thermoplastic elastomer is SEBS.
Claim 6
Dependent Claim
10 words
The composition of claim 1, wherein said polyolefin is polypropylene.
Claim 7
Dependent Claim
19 words
The composition of claim 5, wherein the amount of said polypropylene ranges from about 15 to about 30 parts.
Claim 8
Dependent Claim
12 words
The composition of claim 1, wherein said halobutyl rubber is bromobutyl rubber.
Claim 9
Dependent Claim
15 words
The composition of claim 1, when said curing agent is a blocked diamine curing agent.
Claim 10
Dependent Claim
15 words
The composition of claim 8, wherein said blocked diamine is a carbon dioxide hindered diamine.
Claim 11
Dependent Claim
13 words
The composition of claim 9, wherein said curing agent comprises hexamethylene diamine carbamate.
Claim 12
Dependent Claim
70 words
A thermoplastic elastomer composition comprising: a halobutyl rubber cured by dynamic vulcanization with a diamine curing agent, said cure being effected in the presence of 30 to 65 parts of a mixture formed from 15 to 30 parts of polypropylene and 15 to 35 parts of a thermoplastic elastomeric block copolymer having terminal polystyrene units and olefin elastomeric mid block units, said parts being based on 100 of said rubber.
Claim 13
Dependent Claim
70 words
A thermoplastic elastomer composition comprising: a halobutyl rubber cured by dynamic vulcanization with a diamine curing agent, said cure being effected in the presence of 30 to 65 parts of a mixture formed from 15 to 30 parts of polypropylene and 15 to 35 parts of a thermoplastic elastomeric block copolymer having terminal polystyrene units and olefin elastomeric mid block units, said parts being based on 100 of said rubber.
Claim 14
Dependent Claim
11 words
The composition of claim 11, wherein said thermoplastic copolymer is SEBS.
Claim 15
Dependent Claim
12 words
The composition of claim 11, wherein said halobutyl rubber is bromobutyl rubber.
Claim 16
Dependent Claim
15 words
The composition of claim 11, wherein said blocked diamine is a carbon dioxide hindered diamine.
Claim 17
Dependent Claim
12 words
The composition of claim 14, wherein said diamine is hexamethylene diamine carbamate.
Claim 18
Dependent Claim
57 words
A thermoplastic elastomer composition comprising: a bromobutyl rubber cured by dynamic vulcanization with a diamine curing agent, said cure being effected in the presence of 30 to 65 parts of a mixture formed from 15 to 30 parts of a polypropylene and 15 to 35 parts of SEBS, said parts based on 100 parts of said rubber.
Claim 19
Dependent Claim
57 words
A thermoplastic elastomer composition comprising: a bromobutyl rubber cured by dynamic vulcanization with a diamine curing agent, said cure being effected in the presence of 30 to 65 parts of a mixture formed from 15 to 30 parts of a polypropylene and 15 to 35 parts of SEBS, said parts based on 100 parts of said rubber.
Claim 20
Dependent Claim
12 words
The composition of claim 16, wherein said diamine is hexamethylene diamine carbamate.
Claim 21
Dependent Claim
78 words
A thermoplastic elastomer composition comprising: a halobutyl rubber cured by dynamic vulcanization with a multifunctional amine curing agent, said cure being effected in the presence of at least 20 parts of a mixture formed from by 10 to 60 parts of a polyolefin selected from polypropylene and polyethylene and 1 to 90 parts of a thermoplastic elastomeric block copolymer having terminal polystyrene units and olefin elastomeric mid block units, said parts based on 100 parts of said rubber.
Claim 22
Dependent Claim
78 words
A thermoplastic elastomer composition comprising: a halobutyl rubber cured by dynamic vulcanization with a multifunctional amine curing agent, said cure being effected in the presence of at least 20 parts of a mixture formed from by 10 to 60 parts of a polyolefin selected from polypropylene and polyethylene and 1 to 90 parts of a thermoplastic elastomeric block copolymer having terminal polystyrene units and olefin elastomeric mid block units, said parts based on 100 parts of said rubber.
Claim 23
Dependent Claim
11 words
The composition of claim 18, wherein said block copolymer is SEBS.
Claim 24
Dependent Claim
19 words
The composition of claim 19, wherein the amount of said SEBS ranges from about 18 to about 50 parts.
Claim 25
Dependent Claim
10 words
The composition of claim 19, wherein said polyolefin is polypropylene.
Claim 26
Dependent Claim
19 words
The composition of claim 21, wherein the amount of said polypropylene ranges from about 15 to about 30 parts.
Claim 27
Dependent Claim
12 words
The composition of claim 18, wherein said halobutyl rubber is bromobutyl rubber.
Claim 28
Dependent Claim
15 words
The composition of claim 18, wherein said curing agent is a blocked diamine curing agent.
Claim 29
Dependent Claim
15 words
The composition of claim 24, wherein said blocked diamine is a carbon dioxide hindered diamine.
Claim 30
Dependent Claim
13 words
The composition of claim 25, wherein said curing agent comprises hexamethylene diamine carbamate
References Cited (Backward Citations)
US3104235A
Cited
US4130534A
Cited
US4616064A
Cited
US4501842A
Cited
US4607074A
Cited
US4639487A
Cited
US4593062A
Cited
US4728692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-03-06 | 1992-09-05 | 1993-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-03-06 | 1996-09-05 | 1997-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-03-06 | 2000-09-05 | 2001-03-07 | $7700.00 | Window Closed / Lapsed |