US4912148A
Expired / Lapsed
US
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Thermoplastic elastomeric resin compositions and process for preparing the same
Assignee: Hyosung T&C Co Ltd
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Filing: 1988-07-15
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Granted: 1990-03-27
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Expires: 2008-07-15
Abstract
Abstract Thermoplastic elastomer having excellent processability and physical properties is provided by the composition: (A) monoolefin copolymer rubber: 20 to 90 parts by weight (B) crystalline poly-alpha olefin resin: 5 to 70 parts by weight (C) mineral oil-type oil: 5 to 100 parts by weight with respect to (A) plus (B) (D) polyolefin-type wax: 5 to 60 parts by weight with respect to (A) plus (B) (E) butyl rubber: 0.1 to 10 parts by weight with respect to (A) plus (B) in the extruder and then are dynamically partial cross-linked together with a certain amount of organic peroxide, cross-linking aids and coupling agents in the extruder.
Inventors
- 👤 Jae K. Kim
- 👤 Sung M. Lee
- 👤 Young D. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:40
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C08L2207/00; C08L2207/04; C08L23/18; C08L23/20; C08L23/22
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
132 words
A thermoplastic elastomer resin composition which comprises the basic composition of 20 to 90 parts by weight of a saturated or unsaturated monoolefin copolymer rubber (A), 5 to 70 parts by weight of a crystalline polyalpha olefin resin (B), 5 to 100 parts by weight, with respect to (A)+(B), of a mineral oil-type oil (C), 5 to 60 parts by weight, with respect to (A)+(B), of an olefin-type wax (D) and 0.1 to 10 parts by weight, with respect to (A+B), of a butyl rubber (E), wherein on the basis of the total amount of the basic composition, 0.05 to 5 parts by weight of an organic peroxide, 0.1 to 2.0 parts by weight of a cross-linking aid and 0.01 to 5.0 parts by weight of a coupling agent are further added.
Claim 2
Dependent Claim
132 words
A thermoplastic elastomer resin composition which comprises the basic composition of 20 to 90 parts by weight of a saturated or unsaturated monoolefin copolymer rubber (A), 5 to 70 parts by weight of a crystalline polyalpha olefin resin (B), 5 to 100 parts by weight, with respect to (A)+(B), of a mineral oil-type oil (C), 5 to 60 parts by weight, with respect to (A)+(B), of an olefin-type wax (D) and 0.1 to 10 parts by weight, with respect to (A+B), of a butyl rubber (E), wherein on the basis of the total amount of the basic composition, 0.05 to 5 parts by weight of an organic peroxide, 0.1 to 2.0 parts by weight of a cross-linking aid and 0.01 to 5.0 parts by weight of a coupling agent are further added.
Claim 3
Dependent Claim
47 words
The resin composition according to claim 1, wherein the said saturated or unsaturated monoolefin copolymer rubber is ethylene-propylene copolymer rubber or ethylene-propylene-non-conjugated diene rubber, which has an ethylene content of 60 to 90 wt. % and a Mooney viscosity ML 1+4 (100° C.) of 10 to 100.
Claim 4
Dependent Claim
31 words
The resin composition according to claim 1, wherein the said crystalline poly-alpha olefin resin is isotactic polypropylene, propylene-ethylene copolymer or propylene-4-methyl-1-pentene copolymer, which has a Melt Index of 0.6 to 60.
Claim 5
Dependent Claim
19 words
The resin composition according to claim 1, wherein the said mineral oil-type oil is aromatic, paraffinic or naphthenic oil.
Claim 6
Dependent Claim
28 words
The resin composition according to claim 1, wherein the said olefin-type wax is polyethylene wax or polypropylene wax, which has an average molecular weight of 1700 to 8000.
Claim 7
Dependent Claim
24 words
The resin composition according to claim 1, wherein the said butyl rubber has a Mooney viscosity ML 1+8 (100° C.) of 30 to 60.
Claim 8
Dependent Claim
27 words
The resin composition according to claim 1, wherein the said organic peroxide is 2,5-dimethyl-2,5-di(tert.-butyl peroxy)benzene, 2,5-dimethyl-2,5-di(tert.-butyl peroxy)hexane-3, 1,3-bis(tert.-butyl peroxy isopropyl)benzene, 1,1-bis(tert.-butyl peroxy)-3,5,5-trimethylcyclohexane, dicumyl peroxide or benzoyl peroxide.
Claim 9
Dependent Claim
19 words
The resin composition according to claim 1, wherein the said cross-linking aid is polyfunctional vinyl monomer or polyfunctional methacrylate.
Claim 10
Dependent Claim
26 words
The resin composition according to claim 1, wherein the said coupling agent is isopropyl triisostearoyl titanate, isopropyl tri(dioctyl phosphato) titanate, titanium di(dioctylpyrophosphate)oxyacetate, or diisostearol ethylene titanate.
References Cited (Backward Citations)
US3758643A
Cited
US3862106A
Cited
US3957919A
Cited
US4104210A
Cited
US4212787A
Cited
US4247652A
Cited
US4607074A
Cited
US4639487A
Cited
US4593062A
Cited
US4728692A
Cited
US4801651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-26 | 1993-09-25 | 1994-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-26 | 1997-09-25 | 1998-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-26 | 2001-09-25 | 2002-03-27 | $7700.00 | Window Closed / Lapsed |