Shape memory polymer foam

Details Shape memory polymer foam Shape memory polymer foam

1989-09-28

1991-09-17

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521164, 521167, 528 59, 264345, 264346, 264348, C08G 1848

Patent

active

050495917

ABSTRACT:
A shape memory polymer foam which takes on a deformed shape and an as-molded shaped, said deformed shape being produced when the polymer foam is compressed at a temperature higher than the glass transition point (Tg) of the polymer and then kept compressed at a temperature lower than the Tg until compression sets, said as-molded shape being produced when the compressed polymer foam is heated again to a temperature higher than the Tg until it recovers its original shape.

REFERENCES:
patent: 4689356 (1987-08-01), Peffley et al.
patent: 4722946 (1988-02-01), Hostettler
patent: 4909976 (1990-03-01), Cucolo et al.
"Development of Polymeric Elasticity Memory Material", Mitsubishi Juko, GIHO, vol. 25, No. 3, (1988), (pp. 236-240), (no English language translation).

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