US4315966A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous substrate vulcanization-adhered to ethylene-propylene rubber composition
Assignee: JSR Corp
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Filing: 1980-10-16
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Granted: 1982-02-16
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Expires: 2000-10-16
Abstract
Abstract By blending 5-40 parts by weight of a polyisoprene having an intrinsic viscosity [n] of 0.2-1.5 dl/g as measured in toluene at 30° C. and a total 1,2- and 3,4-configuration content of 30% or less in its micro-structure into 100 parts by weight of an ethylene-propylene rubber, the adhesive property of the ethylene-propylene rubber to fibers can be improved while maintaining the heat resistance, weather resistance, ozone resistance, low temperature properties, electrical insulating property and chemical resistance which are all characteristic of ethylene-propylene rubber.
Inventors
- 👤 Takeshi Akiyama
- 👤 Toshiyuki Koide
- 👤 Mutsuo Nagasawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:06
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C08K; C08K3/00; C08K3/02; C08K3/04; C08K3/06; C08K3/18; C08K3/20; C08K3/22; C08K5/00; C08K5/0008; C08K5/0025; C08K7/00; C08K7/02; C08L9/00; C08L2312/00; C08L2666/00; C08L2666/02; C08L2666/04; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31855; Y10T428/31931; Y10T428/31938; Y10T442/00; Y10T442/20; Y10T442/2213; Y10T442/2221; Y10T442/259; Y10T442/2598; Y10T442/2631; Y10T442/2861; Y10T442/2869; Y10T442/2893
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
60 words
An article obtained by subjecting to vulcanizing-adhesion a fibrous substrate and an ethylene-propylene rubber composition comprising 100 parts by weight of an ethylene-propylene rubber, 5-40 parts by weight of polyisoprene having an intrinsic viscosity [η] of 0.2-1.5 dl/g as measured in toluene at 30° C. and a total 1,2- and 3,4-configuration content of 30% or less, and a vulcanizing agent.
Claim 2
Dependent Claim
60 words
An article obtained by subjecting to vulcanizing-adhesion a fibrous substrate and an ethylene-propylene rubber composition comprising 100 parts by weight of an ethylene-propylene rubber, 5-40 parts by weight of polyisoprene having an intrinsic viscosity [η] of 0.2-1.5 dl/g as measured in toluene at 30° C. and a total 1,2- and 3,4-configuration content of 30% or less, and a vulcanizing agent.
Claim 3
Dependent Claim
15 words
An article according to claim 1, wherein said ethylene-propylene rubber is an ethylene-propylene-non-conjugated diene terpolymer.
Claim 4
Dependent Claim
30 words
An article according to claim 2, wherein the non-conjugated diene in the terpolymer is at least one member selected from the group consisting of ethylidene-norbornene, dicyclopentadiene, 1,4-hexadiene, methylene-norbornene and 4,7,8,9-tetrahydroindene.
Claim 5
Dependent Claim
15 words
An article according to claim 2, wherein the non-conjugated diene in the copolymer is ethylidene-norbornene.
Claim 6
Dependent Claim
17 words
An article according to claim 1, wherein said polyisoprene has an intrinsic viscosity [η] of 0.25-1.0 dl/g.
Claim 7
Dependent Claim
22 words
An article according to claim 1 or 5, wherein said polyisoprene has a total 1,2- and 3,4-configuration content of 15% or less.
Claim 8
Dependent Claim
17 words
An article according to claim 1 or 5, wherein the polyisoprene is prepared by an emulsion polymerization.
Claim 9
Dependent Claim
18 words
An article according to claim 1 or 5, wherein the amount of polyisoprene is 10-30 parts by weight.
Claim 10
Dependent Claim
22 words
An article according to claim 1 which additionally contains carbon black, filler, softening agent, zinc oxide, stearic acid, antioxidant, and vulcanization accelerator.
Claim 11
Dependent Claim
19 words
An article according to claim 1 or 5, wherein the fibrous substrate is of polyamide, polyester, vinylon or rayon.
References Cited (Backward Citations)
US3528473A
Cited
US4211692A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-02-15 | 1985-08-17 | 1986-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-15 | 1989-08-17 | 1990-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-15 | 1993-08-17 | 1994-02-16 | $7700.00 | Window Closed / Lapsed |