Rubbery polymer composition

Details Rubbery polymer composition Rubbery polymer composition

2007-07-24

2007-07-24

Nutter, Nathan M. (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

C525S240000, C525S241000

Reexamination Certificate

active

10455724

ABSTRACT:
A vulcanized rubbery polymer composition comprising a component (A) and a thermoplastic resin (B), wherein the component (A) comprises a hydrogenated copolymer (A-1), which is obtained by hydrogenating a copolymer comprising a conjugated diene monomer unit and an aromatic vinyl monomer unit and having an aromatic vinyl monomer content of not less than 5% by weight and not more than 90% by weight, and which has a crystallization peak calorie measured by a differential scan calorimetry of not more than 2 J/g, and at least one vulcanizable rubber (A-2) selected from the group consisting of a copolymer (a1) comprising an ethylene unit and an α-olefin unit of 3 to 20 carbon atoms and a hydrogenated rubber (a2) obtained from a homopolymer rubber of at least one conjugated diene monomer or a copolymer rubber comprising a conjugated diene monomer unit and an aromatic vinyl monomer unit and having an aromatic vinyl monomer content of less than 5% by weight.

REFERENCES:
patent: 6384143 (2002-05-01), Nishihara et al.
patent: 6403716 (2002-06-01), Nishihara
patent: 6458893 (2002-10-01), Tasaka et al.
patent: 6800693 (2004-10-01), Nishihara et al.

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