Manufacture of polymers in bead form from water-soluble, ethylen

Details Manufacture of polymers in bead form from water-soluble, ethylen Manufacture of polymers in bead form from water-soluble, ethylen

1977-07-20

1979-08-14

Henderson, Jr., C. A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526203, 526207, 526303, 526312, C08F 216, C08F 232

Patent

active

041646134

ABSTRACT:
Production of polymers in bead form by forming a water-in-oil suspension of an aqueous solution containing at least one water-soluble ethylenically unsaturated monomer in an inert hydrophobic liquid organic dispersion medium and polymerizing the suspended monomer in the presence of a polymerization initiator and a protective colloid obtained by polymerizing (A) 60 to 100% by weight of at least one monomer selected from the group consisting of cyclopentadiene, dicyclopentadiene, tricyclopentadiene and alkyl-substituted derivatives thereof, and (B) 0 to 40% by weight, based on the mixture of (A) and (B), of a mono- or diethylenically unsaturated monomer copolymerizable with (A).

REFERENCES:
patent: 3255127 (1966-06-01), von Bonin
patent: 3729451 (1973-04-01), Blecke
patent: 3948866 (1976-04-01), Pennewiss

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