Porous composite material and process for preparing same

Details Porous composite material and process for preparing same Porous composite material and process for preparing same

1980-04-28

1983-07-19

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

427244, 521 55, 521134, 521139, 521905, 521918, 525903, C08J 940, C08J 942

Patent

active

043944574

ABSTRACT:
A porous composite material includes a porous body formed of a hydrophobic polymer such as polyvinyl chloride and a layer of a hydrophilic polymer such as polyvinyl alcohol provided over at least a portion of the interior surface of each of the pores of the porous body. The composite material is obtained by a process including the steps of dispersing an aqueous solution containing a hydrophilic polymer and a foaming agent into a solution of a hydrophobic polymer in an organic solvent to form an emulsion, removing the water and the organic solvent from the emulsion to obtain a solid, and subjecting the solid to foaming conditions.

REFERENCES:
patent: 3252935 (1966-05-01), Thompson et al.
patent: 3719726 (1973-03-01), Hara et al.
patent: 3826674 (1974-07-01), Schwartz
patent: 3833404 (1974-09-01), Sperling et al.
patent: 4018729 (1977-04-01), Faucher et al.
patent: 4079100 (1978-03-01), Gergen et al.

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