Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1994-02-07
1996-07-23
Marquis, Melvyn I.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
528110, C08K 320, C08L 6302
Patent
active
055390234
ABSTRACT:
Curing agents for aqueous epoxy resin dispersions obtained by reaction of an adduct (A) of at least one polyepoxide (A.sub.1) and at least one polyalkylene polyether polyol (A.sub.2), it being possible for the adduct (A) to be modified with a secondary amine (A.sub.3) if appropriate, with
I. a reaction product of an amine (B) and an epoxide (C)
or
II. an amine (B) and subsequent reaction with an epoxide (C),
the amount of amine (B) being chosen such that the H atoms on the nitrogen are present in a 2- to 10-fold excess, based on the epoxide groups in (A).
REFERENCES:
patent: 4152285 (1979-05-01), Thomassen
patent: 4197389 (1980-04-01), Becker et al.
patent: 4415682 (1983-11-01), Becker
patent: 4575523 (1986-03-01), Anderson et al.
patent: 4608405 (1986-08-01), DeGooyer
patent: 5319004 (1994-06-01), Marten et al.
Lee & Neville, Handbook of Epoxy Resins, (1967) p. 9-1.
Dreischhoff Dieter
Geisler Joerg-Peter
Godau Claus
Hoenel Michael
Stengel-Rutkowski Bernhard
Aylward D.
Hoechst Aktiengesellschaft
Marquis Melvyn I.
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