Preparation of bead polymers based on water-soluble ethylenicall

Details Preparation of bead polymers based on water-soluble ethylenicall Preparation of bead polymers based on water-soluble ethylenicall

1987-04-10

1988-04-19

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

523337, 526209, C08F 232

Patent

active

047390093

ABSTRACT:
Bead polymers are prepared by reverse suspension polymerization by a process in which an aqueous solution of water-soluble ethylenically unsaturated monomers are polymerized in an aliphatic hydrocarbon using an inorganic suspending agent based on a modified finely divided mineral and, in addition, from 0.1 to 5% by weight, based on the monomers used, of a nonionic surfactant, in the presence of a polymerization initiator, with the formation of a water-in-oil polymer suspension.

REFERENCES:
patent: 4052353 (1977-10-01), Scanley
patent: 4242247 (1980-12-01), Pellon
patent: 4461866 (1984-07-01), Yanutola
patent: 4539368 (1985-09-01), Duncan
patent: 4650827 (1987-03-01), Becker
patent: 4656222 (1987-04-01), DeFazio

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