Single phase shape-transformable elastomeric compounds

Details Single phase shape-transformable elastomeric compounds Single phase shape-transformable elastomeric compounds

1988-05-03

1990-01-02

Ziegler, Jacob

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

Synthetic resins

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

525129, 525130, 525186, 525187, 525189, 525208, 525210, 525215, 525224, 525233, 525240, 525241, C09L 902, C09L 906

Patent

active

048914096

ABSTRACT:
Crystalline elastomeric network compositions are transformable from their original cured shape into an altered shape and subsequently back to their original shape. The transformation process, which is repeatable, is effected by the simultaneous application of heat and deformation forces. The amount of heat required, expressed in terms of temperature, is relatively low. The shape-transformable compositions of the present invention are single phase blends of one or more crystalline polymers and one or more elastomer polymers. The compositions generally have a single broad endotherm due probably to the co-crystallization of the different crystalline segments, a low glass transition temperature, and a low transformation temperature, that is generally less than 100.degree. C.

REFERENCES:
patent: 3354107 (1967-11-01), Hamed

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