US4619972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified elastomer and laminate thereof
Assignee: Tonen General Sekiyu KK
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Filing: 1985-03-29
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Granted: 1986-10-28
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Expires: 2005-03-29
Abstract
Abstract Modified polymer compositions comprising elastomers blended with not more than 50 parts by weight of a crystalline polyolefin are prepared by reaction of the polymers with an unsaturated carboxylic acid or its acid anhydride. The modified composition optionally containing a filler, is particularly suitable for laminating to metals and other polymers; laminates show superior hot water resistance, salt water resistance and thermal shock resistance.
Inventors
- 👤 Hiroshi Inoue
- 👤 Makoto Miyazaki
- 👤 Masaaki Isoi
- 👤 Makoto Yoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:26
CPC Classifications
B; B32; B32B; B32B25/00; B32B25/14; B32B27/00; B32B27/06; B32B27/08; B32B15/00; B32B15/04; B32B15/08; B32B27/18; B32B27/20; B32B27/32; C; C08; C08F; C08F255/00; C08F255/02; C08F279/00; C08F279/02; B32B2250/00; B32B2250/02; B32B2250/03; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696; Y10T428/31725; Y10T428/3175; Y10T428/31757; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192; Y10T428/31931; Y10T428/31935
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
174 words
A modified elastomer composition including modified elastomer and crystalline polyolefin prepared by the reaction of: (A) 100 parts by weight of at least one elastomer selected from an ethylene/butene-1 copolymer, a styrene/butadiene copolymer and an ethylene/propylene copolymer wherein the ethylene content of said ethylene/butene-1 copolymer comprises 10 to 90% by weight of said copolymer and its Mooney viscosity at 100° C. is 10 to 200; and wherein the styrene content of said styrene/butadiene copolymer comprises 5 to 70% by weight of said copolymer and its Mooney viscosity at 100° C. is 10 to 200; and wherein the ethylene content of said ethylene/propylene copolymer comprises 10 to 90% by weight of said copolymer, its Mooney viscosity at 100° C. is 10 to 200 and its density is 0.85 to 0.90, and not more than 50 parts by weight of a crystalline polyolefin, with 0.005 to about 0.8 part by weight of an unsaturated carboxylic acid or its anhydride and further including a radical generator and melting and kneading the mixture at 120 to 300° C.
Claim 2
Dependent Claim
174 words
A modified elastomer composition including modified elastomer and crystalline polyolefin prepared by the reaction of: (A) 100 parts by weight of at least one elastomer selected from an ethylene/butene-1 copolymer, a styrene/butadiene copolymer and an ethylene/propylene copolymer wherein the ethylene content of said ethylene/butene-1 copolymer comprises 10 to 90% by weight of said copolymer and its Mooney viscosity at 100° C. is 10 to 200; and wherein the styrene content of said styrene/butadiene copolymer comprises 5 to 70% by weight of said copolymer and its Mooney viscosity at 100° C. is 10 to 200; and wherein the ethylene content of said ethylene/propylene copolymer comprises 10 to 90% by weight of said copolymer, its Mooney viscosity at 100° C. is 10 to 200 and its density is 0.85 to 0.90, and not more than 50 parts by weight of a crystalline polyolefin, with 0.005 to about 0.8 part by weight of an unsaturated carboxylic acid or its anhydride and further including a radical generator and melting and kneading the mixture at 120 to 300° C.
Claim 3
Dependent Claim
37 words
The modified elastomer of claim 1 wherein said crystalline polyolefin is selected from the group consisting of high-density polyethylene, medium-density polyethylene, low-density polyethylene, crystalline ethylene/butene-1 copolymer, polypropylene, crystalline propylene/ethylene copolymer, polybutene-1 and poly (4-methyl-pentene-1), or mixtures thereof.
Claim 4
Dependent Claim
23 words
The modified elastomer of claim 2 wherein said crystalline polyolefin is selected from the group consisting of high-density polyethylene, low-density polyethylene and polypropylene.
Claim 5
Dependent Claim
15 words
The modified elastomer of claim 1 further prepared by the reaction of a radical generator.
Claim 6
Dependent Claim
14 words
The modified elastomer cf claim 4 wherein said radical generator is an organic peroxide.
Claim 7
Dependent Claim
29 words
The modified elastomer of claim 1 wherein said unsaturated carboxylic acid or anhydride thereof is selected from the group consisting of maleic anhydride, acrylic acid and endo-bicyclo-[2.2.1]-5-heptene-2, 3-dicarboxylic anhydride.
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) | 1989-10-27 | 1990-04-28 | 1990-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-27 | 1994-04-28 | 1994-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-27 | 1998-04-28 | 1998-10-28 | $7700.00 | Window Closed / Lapsed |