Foamed polymeric materials

Details Foamed polymeric materials Foamed polymeric materials

1985-07-03

1987-03-10

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 66, 521 72, 521 92, C08J 930

Patent

active

046491643

ABSTRACT:
Foamed water-swellable polymeric water absorbent materials are prepared by contacting a polymer capable of having a water-swellable character and containing acid moieties in acid form with a blowing agent such as sodium bicarbonate, which blowing agent is capable of neutralizing the acid moieties of the polymer. The foamed polymers are useful in a wide variety of water absorbent applications.

REFERENCES:
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patent: 4207402 (1980-06-01), Sprenkle, Jr.
patent: 4306036 (1981-12-01), Corbett
patent: 4307202 (1981-12-01), Corbett
patent: 4312958 (1982-01-01), Di Giulio et al.
patent: 4323655 (1982-04-01), Di Giulio et al.
patent: 4454086 (1984-06-01), Corbett et al.
patent: 4529739 (1985-07-01), Scott et al.
patent: 4532265 (1985-07-01), Park et al.
patent: 4535094 (1985-08-01), Park et al.

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