Process for producing a suspension of a vinylpyridine polymer in

Details Process for producing a suspension of a vinylpyridine polymer in Process for producing a suspension of a vinylpyridine polymer in

1998-12-15

2000-01-04

Truong, Duc

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524457, 524458, 525191, 525205, 525218, 5253294, 5253333, 528310, 528502A, 528503, C08J 305, C08K 534

Patent

active

060110961

ABSTRACT:
This invention relates to an improved free radical polymerization process for directly producing stable vinylpyridine polymer particles in an aqueous suspension and in a high state of polymer purity by effecting the polymerization in the presence of a water soluble suspension agent selected from the group of polyvinyl lactam, a hydroxy-containing polymer, a polyvinyl alcohol and a mixture thereof.

REFERENCES:
patent: 3828016 (1974-08-01), Bacskai
patent: 4797458 (1989-01-01), Sharaby
patent: 4824910 (1989-04-01), Lutz
patent: 4931518 (1990-06-01), Sharaby
patent: 5112522 (1992-05-01), Sharaby
patent: 5244995 (1993-09-01), Skillieorn et al.
patent: 5322731 (1994-06-01), Callahan, Jr. et al.
patent: 5847562 (1998-12-01), Sharaby

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