New epoxy resin and use as build up suppressant coating in polym

Details New epoxy resin and use as build up suppressant coating in polym New epoxy resin and use as build up suppressant coating in polym

1979-08-20

1981-04-14

Nielsen, Earl A.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528120, 526 62, C08G 5956

Patent

active

042621097

ABSTRACT:
An epoxy resin, useful for coating the internal surface(s) of a reactor such as one used for vinyl halide, particularly vinyl chloride, polymerisation in aqueous dispersion for the purpose of suppressing build-up, is made by cross-linking (I) the uncross-linked polyether intermediate of an epoxy resin, by admixture with (II) a product made from the reaction of (A) at least one aliphatic amine containing two or more primary aliphatic amino groups, (B) at least one aromatic amine containing two or more primary aromatic amino groups, and (C) at least one compound selected from oxo-group substituted aromatic compounds and quinone-type compounds, wherein the molar ratio (A):(B) is 4:1 to 1:3.
Preferably, (I) is made from the reaction between 2,2-bis-(4-hydroxyphenyl) propane and epichlorohydrin and (II) is made from the reaction of (A) tetraethylenepentamine, (B) p-phenylene diamine, and (C) hydropquinone and pyrogallol. The molar ratio of (A):(B) is preferably from 2:1 to 1:2 and the molar ratio [(A)+(B)]:(C) is preferably from 1:4 to 2:1. The weight ratio of (I):(II) is preferably from 1:4 to 2:1.

REFERENCES:
patent: 3366600 (1968-01-01), Haberlin et al.
patent: 3428601 (1969-02-01), Dijkstra et al.
patent: 3519576 (1970-07-01), Johnson et al.
patent: 3853812 (1974-12-01), Helm
Hackh's Chemical Dictionary, McGraw-Hill, 4th Ed., 1969, pp. 481-482.

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