Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1980-01-28
1983-03-22
Henderson, C. A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526214, 5263442, 5263443, C08F 226, C08F 220, C08F 1406
Patent
active
043776728
ABSTRACT:
The subject of the invention is a microsuspension polymerization in water of vinyl chloride, which is carried out in the presence of monomer-soluble radical-initiators and emulsifiers. According to the invention, from about 0.01 to 0.5% by weight, based on the weight of the water, of polymers containing mono-basic or dibasic carboxylic acid units and/or salts thereof are added. Furthermore, in a preferred embodiment, emulsifiers containing perfluorinated alkyl groups are also used. Stabilization of the microsuspension latex, which is per se sensitive to shearing action, and reduction in the amount of emulsifiers used are achieved.
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Geschonke Hans
Goetze Ulrich
Kreilein Kurt
Henderson C. A.
Wacker - Chemie GmbH
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