Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymerizing in reactor of specified material – or in reactor...
Patent
1977-09-02
1978-09-26
Holler, Alan
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymerizing in reactor of specified material, or in reactor...
526 74, 5263442, C08F 218, C08F 232, C08F 1406
Patent
active
041172159
ABSTRACT:
This invention relates to a process of producing vinyl polymers by an inversion polymerization technique in the presence of a two layer coating on the internal surfaces of the polymerization reactor. By inversion polymerization is meant conducting the initial stage of the polymerization reaction wherein the monomer or monomers being polymerized constitute the continuous phase and in the latter stage of polymerization, water constitutes the continuous phase. The coatings comprise an undercoating of a polyaromatic amine, or like material, and the top coating is comprised of a water-soluble suspending agent, such as an alkyl or alkyl hydroxyalkyl cellulose ether. By means of the present inventive process, polymer buildup on the internal surfaces of the reactor are substantially reduced.
REFERENCES:
patent: 3515709 (1970-06-01), Nelson et al.
patent: 3669946 (1972-06-01), Koyanagi et al.
patent: 3778423 (1973-12-01), Reiter
patent: 3804924 (1974-04-01), Papetti et al.
patent: 3915944 (1975-10-01), Burgess et al.
patent: 4007320 (1977-02-01), Petersen
patent: 4024301 (1977-05-01), Witenhafer et al.
Popovich David Thomas
Witenhafer Donald Edward
Holler Alan
The B. F. Goodrich Company
Wymbs Roy P.
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