Microporous shaped article and process for preparation thereof

Details Microporous shaped article and process for preparation thereof Microporous shaped article and process for preparation thereof

1990-02-05

1993-08-24

Ryan, Patrick J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Composite having voids in a component

4283084, 4283066, 428372, 428376, 428398, 21050023, 521134, 521143, B32B 324, C08J 900

Patent

active

052387356

ABSTRACT:
Disclosed is a microporous shaped polyolefin article comprising a polyolefin and synthetic resin particles dispersed therein and having a softening temperature or a decomposition temperature higher than the shaping temperature of the polyolefin resin, said article having a network structure composed of open-cellular pores with a maximum pore diameter of not more than 5 micromoters, having a porosity of 20 to 90% and being molecularly oriented by stretching. A process for its production is also provided.

REFERENCES:
patent: 3375208 (1968-03-01), Duddy
patent: 3627703 (1971-12-01), Kojima
patent: 4045352 (1977-08-01), Rembaum et al.
patent: 4455273 (1984-06-01), Harpell et al.

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