Coating compositions including acid blocked basic catalysts

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ethylenically unsaturated reactant admixed with either...

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525425, 525428, 525444, 525445, 526213, 528220, 427384, C08G 6302, C08G 238, C08F 2000

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active

052199584

ABSTRACT:
A thermosetting coating composition is provided, which composition is based upon (A) an activated unsaturated group-containing compound, (B) an activated CH group-containing compound and (C) a strong basic catalyst, wherein the strong basic catalyst is blocked with a [particular] carboxylic acid which is volatile and/or undergoes decarboxylation under curing conditions. These coating compositions possess extended potlife, good curing speed, and a good balance of physical and mechanical properties making them especially well suited for a variety of coatings uses such as in paint, impregnating, sealing and bonding compositions.

REFERENCES:
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Bull. Acad. Polonaise de Sciences; Serie Chimique, vol. 23, No. 3, 1975 Warsaw, pp. 199-209; Kinstowski et al: "Studies on the Mechanism of Addition of Malonic Ester to Polarized Doublebond": p. 204 table, tests I 5-7, II 5-7; FIG. 10.
Revue Roumaine de Chimie, vol. 29, No. 7, Bukarest: pp. 575-582; El-Kasaby et al: "Michael Reaction of .beta.-(2-Fluorenyl)-acrylic acid and its amides"; p. 577, lines 1-6; p. 580, lines 34-46.

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