Polymerizing vinyl chloride in reactor treated with condensates

Details Polymerizing vinyl chloride in reactor treated with condensates Polymerizing vinyl chloride in reactor treated with condensates

1981-05-20

1982-10-19

Henderson, C. A.

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

Synthetic resins

Polymerizing in reactor of specified material, or in reactor...

525504, 526202, 526212, 528165, C08F 220, C08F 202

Patent

active

043551416

ABSTRACT:
In the polymerization of vinyl chloride, the adhesion of the resulting polymer to the walls can be prevented by previously applying a specific chemical to the inner walls of the polymerization tank and parts of the device to be contacted with the monomer during the polymerization. This specific chemical is a copolycondensate obtained by reacting a resol type phenol/formaldehyde precondensate with a nitrogen-containing compound selected from the group consisting of nitrophenols, nitrobenzoic acids, nitrobenzenesulfonic acids, aminophenols, aminobenzoic acids and aminobenzenesulfonic acids.

REFERENCES:
patent: 4200712 (1980-04-01), Cohen
patent: 4220743 (1980-09-01), Englin
patent: 4256863 (1981-03-01), McOhie

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