Process for manufacturing porous polymer

Details Process for manufacturing porous polymer Process for manufacturing porous polymer

1986-10-24

1988-05-03

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 63, 521 64, 521 61, 524 37, 524 42, 524543, 524555, 524556, 524557, 524801, 524803, C08J 926, C08J 928

Patent

active

047420863

ABSTRACT:
The present invention provides a process for manufacturing a porous polymer containing many voids in its interior, which has a small apparent specific gravity and is superior in terms of water absorbing properties, permeability and elasticity. The process comprises (1) forming O/W emulsion by using a water soluble surfactant wherein an inner phase of the O/W emulsion is a hydrophobic phase and an outer phase thereof is a water phase containing at least one water-soluble polymerizable monomer; (2) adding said O/W emulsion to a hydrophobic dispersing medium containing an oil-soluble surfactant to form O/W/O emulsion; and (3) polymerizing the monomer.

REFERENCES:
patent: 4328149 (1982-05-01), Morse et al.
patent: 4489174 (1984-12-01), Karickhoff

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