Semisuspension polymerization processes

Details Semisuspension polymerization processes Semisuspension polymerization processes

1993-03-25

1998-12-22

Wu, David W.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 65, 526 86, 526 88, 526263, 5263031, 5263077, 526316, 5263171, 526328, 5263297, 526334, 526342, 526345, 526346, C08F 202, C08F 216

Patent

active

058521402

ABSTRACT:
Disclosed is a process for the preparation of a polymer which comprises effecting bulk polymerization of a mixture of at least one monomer, a free radical polymerization initiator, and a stable free radical agent until from about 10 to about 50 weight percent of the monomer has been polymerized; optionally adding additional free radical initiator; optionally adding a colorant; dispersing with a high shear mixer the aforementioned partially polymerized mixture in water containing a stabilizing component selected from the group consisting of non-ionic and ionic water soluble polymeric stabilizers to obtain a suspension of particles with an average diameter of from about 0.1 to about 10 microns; polymerizing the resulting suspension to form said polymer.

REFERENCES:
patent: 5043404 (1991-08-01), Mahabadi et al.
patent: 5164282 (1992-11-01), Mahabadi

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