Block copolymer and compositions

Details Block copolymer and compositions Block copolymer and compositions

1986-11-12

1988-03-29

Bleutge, John C.

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

Synthetic resins

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

525536, 525906, 528388, C08G 7514

Patent

active

047344709

ABSTRACT:
A block copolymer composed of polyphenylene sulfide segments and aromatic sulfide sulfone polymer segments and having a logarithmic viscosity [.eta.], determined at 206.degree. C. for its solution in alpha-chloronaphthalene in a polymer concentration of 0.4 g/100 ml of solution and calculated in accordance with the equation [.eta.]=ln (relative viscosity)/polymer concentration, of 0.03 to 1.0. A resin composition comprising the block copolymer and polyphenylene sulfide and/or an aromatic sulfide sulfone polymer and optionally a filler. The block copolymer and the resin composition have improved mechanical strength and are suitable, for example, for encapsulation of electronic component parts.

REFERENCES:
patent: 4127713 (1978-11-01), Campbell
patent: 4654410 (1987-03-01), Kashiwame et al.

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