Method for production of particulate polymers

Details Method for production of particulate polymers Method for production of particulate polymers

1990-09-04

1991-08-20

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521159, 521164, 521167, 521168, 521169, 521170, 521172, 521173, 521174, 524839, 524840, 524871, 524874, 524875, 528 48, C08G 1814

Patent

active

050414674

ABSTRACT:
This invention relates to a method of producing particulate polymers. This production method is characterized in that a mixture of an isocyanate compound containing two or more isocyanato groups per molecule and a surfactant containing two or more hydroxyl groups per molecule is emulsified and allowed to cure in a dispersing medium which does not dissolve the isocyanate compound without use of a protective colloid. According to the production method of the invention, there occurs no aggregation of polymer particles during and after the curing reaction.

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