Latent catalysts, epoxy compositions incorporating same, and coa

Details Latent catalysts, epoxy compositions incorporating same, and coa Latent catalysts, epoxy compositions incorporating same, and coa

1990-05-21

1992-12-08

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156330, 427386, 502150, 502167, 525523, 528 91, 528 93, C09J 502

Patent

active

051694735

ABSTRACT:
Products resulting from contacting (1) at least one compound selected from the group consisting of (a) at least one onium compound of the element nitrogen, phosphorus, sulfur or arsenic; (b) at least one amine compound; and (c) a mixture of any two or more of the (a) and (b) components; with (2) either (a) boric acid or (b) a mixture of boric acid and at least one acid having a weak nucleophilic anion are suitable catalysts for reacting vicinal epoxy-containing compounds with aromatic hydroxyl-containing compounds.

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patent: 4906677 (1990-03-01), Barsotti et al.
patent: 4908397 (1990-03-01), Barsotti et al.
patent: 4925901 (1990-05-01), Bertram et al.
patent: 4975474 (1990-12-01), Barsotti et al.
"Proposed Mechanism for the Curing of Epoxy Resins with Amine-Lewis Acid Complexes or Salts" by James J. Harris and Samuel C. Temin, J. Ap. Pol. Sc., vol. 10, pp. 523-534 (1966).

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