摘要:
A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) between 0.005 and 0.5 reactive equivalents of an amine-epoxy adduct, and optionally (c) from about 0.01 to 1.0 reactive equivalents of a polyhydric phenol, wherein the amine-epoxy adduct is formed upon contacting 1.0 equivalents of an aliphatic polyepoxide and greater than 1.0 but no more than about 2.5 reactive equivalents of a polyoxyalkyleneamine. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.
摘要:
A self-dispersing curable epoxy composition is prepared upon contacting (a) 1.0 reactive equivalents of an epoxy resin, (b) from about 0.01 to 1.0 reactive equivalents of a polyhydric phenol, and (c) between 0.005 and 0.025 reactive equivalents of an amine-epoxy adduct, wherein the amine-epoxy adduct is formed upon contacting 1.0 equivalents of an aliphatic polyepoxide and between 0.3 and 0.9 reactive equivalents of a polyoxyalkyleneamine. The self-dispersing curable epoxy resin forms an aqueous dispersion upon mixing with water. When cured, the dispersion is useful as a coating composition.
摘要:
Curable systems for the preparation of polymeric products in which the curable system comprises an epoxy resin or an isocyanate, wherein the system contains a condensation reaction product ofa) a polyamine having only one primary amino group and only one tertiary amino group, and a non-cyclic backbone containing from 1 to 18 carbon atoms; andb) at least one of urea, guanidine, guanylurea, thiourea, and a mono-N,N' alkyl substituted urea or thiourea having from 1 to 3 carbon atoms in the alkyl moieties.
摘要:
An amine-epichlorohydrin resin is prepared in a water-polyol solvent in order to facilitate the polymerization and crosslinking reactions. The reaction product is useful as a wet strength resin composition which has a flash point high enough to be used in commercial paper making operations.
摘要:
An amine-epichlorohydrin resin is prepared in a water-polyol solvent in order to facilitate the polymerization and crosslinking reactions. The reaction product is useful as a wet strength resin composition which has a flash point high enough to be used in commercial paper making operations.
摘要:
A self-inverting water-in-oil polymer emulsion having a low pour point is prepared by adding a pour point depressant, diol and triol in amounts effective to lower the pour point and inhibit skin formation on the emulsion. The emulsion may be prepared by adding a mixture of from about 0.05 to about 0.5 parts by weight of pour point depressant, from about 5.0 to about 100.0 parts by weight of diol and from about 5.0 to about 100.0 parts by weight of triol to 1.0 to 100.0 parts by weight of a self-inverting water-in-oil polymer emulsion.