High strength elastomers for pharmaceutical products

Details High strength elastomers for pharmaceutical products High strength elastomers for pharmaceutical products

1987-09-24

1989-03-21

Bleutge, John C.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

525 93, 525 98, C08L 5302

Patent

active

048143758

ABSTRACT:
A soft, high strength thermoplastic elastomeric composition for use in medical and pharmaceutical products, comprising an ethylene butylene block copolymer having terminal polystyrene units, a platicizer in an amount sufficient to soften the ethylene butylene phase of the copolymer, and a thermoplastic acrylic resin in an amount ranging from 15 to 65 parts per 100 parts of the copolymer.

REFERENCES:
patent: 3562356 (1971-02-01), Nyberg
patent: 3792124 (1974-02-01), Davison
patent: 4107233 (1978-08-01), Hansen
patent: 4199490 (1980-04-01), Kamiya
patent: 4264747 (1981-04-01), Paddock
patent: 4286077 (1981-08-01), St. Clair
patent: 4393170 (1983-07-01), Haws
patent: 4440815 (1984-04-01), Zomorodi
patent: 4588777 (1986-05-01), Hotta

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