TH25633A - Ethylene / alpha-olefin / non-conjugated rubber composition Polyether Polymer And the vulcanized rubber obtained from this rubber composition - Google Patents

Abstract

Ethylene / alpha-olefin / non-conjugated polyurethane elastomer According to this invention, it consists of a randether polymer (A), prepared from ethylene, alpha-olefin with 3 to 20 carbon atoms and at least one poly compound. Branched-chain eine represented by a specific formula and diene rubber (B), the mole ratio of ethylene to alpha-olefin with 3 to 20 carbon atoms, iodine value and The actual viscosity [Ita] measured in the Decalin at 135 ° C of the randomly polymer rubber (A) is in each of the ranges listed. This rubber composition can be vulcanized. Which has excellent weather resistance, ozone and long time heat resistance without reducing the mechanical strength characteristics. Resistance to ripening And fatigue resistance of The excellent moving object of diene rubber When nitrile rubber (C) is used as diene (B), this rubber composition can Vulcanized, which not only has excellent strength and oil resistance But it also has good resistance to weather, ozone, and heat for a long time. In addition, the ethylene / alpha-olefin / non-conjugated polyurethane elastomer composition, according to this invention, consists of a randether polymer (A ) As above, and the random copolymer (D) rubber, which is prepared from ethylene And alpha-olefins containing 3 to 20 carbon atoms, selectable with non-conjugated diene, this rubber element can provide vulcanized rubber which is Withstands heat for a long time Excellent weather and ozone And has the benefit of having Vulcanization speed is higher than that of traditional EPDM.

Claims (7)

1.1. (Ii) Iodine is 1 to 50 and (iii) true viscosity [อีta] measured in Decalene at 135 ํ C, which represents a relationship of 0.8 dl / g < [Ita] < 5.0 dl / g and such branched-chain polyene compounds having the formula (chemical formula) (I), where n is an integer from 1 to 5, R1 is an alkyl group. 1 to 5 carbon atoms and each R2 and R3 are independently represented by hydrogen atoms. Or an alkyl group with 1 to 5 carbon atoms 2.Elements as stated in Clause 1 with random tires The terpolymer (A) is 20 to 80 by weight, and Diene (B) is 20 to 80 by weight per 100 by weight of the sum of random tires. Tertopolymer (A) and diene rubber (B) 3.Ethylene / alpha-olefin / non-conjugated polyurethane elastomer composition This consists of a randomized polymer rubber (A) as defined in Claim 1 and Nitrile (C). 4. Elements as stated in Clause 3 with random tires. The terpolymer (A) is 20 to 80 parts by weight. And nitrile (C) there are 20 to 80 parts weight per 100 parts by weight of the sum of random tires. Terpolymer (A) and Nitrile rubber (C) 5.Ethylene / alpha-olefin / non-conjugated polyurethane elastomer composition It consists of a randomly-polymerized rubber (A) as defined in Claim 1 and a random copolymer (D) that can be obtained from ethylene / al. Alpha-olefins containing 3 to 20 carbon atoms and can be selected with non-conjugated diene. 6.Composition as stated in Clause 5 with random tires There are 5 to 95 parts (A) terepolymers (A) and 5 to 95 parts by weight of random copolymer tires per 100 parts by weight of the sum of random tires. Tertopolymer (A) and random copolymer (D) rubber 7. Vulcanized rubber that can be obtained by vulcanizing any component specified in Clause 1 to 6.