Process for the preparation of beta-hydroxypolyamines by reaction of epoxy resins with ammonia
AssigneeHoechst Aktiengesellschaft
InventorsHans-Joachim Kiessling, Wilhelm Riemenschneider
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Abstract
Process for the preparation of .beta.-hydroxypolyamines by reaction of polyepoxide compounds with ammonia, in which at least one polyepoxide compound is treated in a first stage with liquid ammonia at temperatures below 50.degree. C., a homogeneous phase being formed, after which the reaction between the polyepoxide compound and ammonia is carried out in a second stage at 60.degree. to 130.degree. C., and when the reaction is complete, the excess ammonia is removed from the reaction mixture. The resulting .beta.-hydroxypolyamines are used as binders or--in protonated form--as binders which can be diluted with water, by themselves or in combination with suitable crosslinking agents.
Claims11
A process for the preparation of a .beta.-hydroxypolyamine consisting essentially of treating at least one polyepoxide compound with liquid ammonia in a first stage at a temperature below 50.degree. C., a homogeneous phase, reacting the homogenous phase in a second stage at 60.degree. to 130.degree. C. in the presence of 0 to 40% by weight of a solvent, based on the weight of the polyepoxide empolyed, and when the reaction is complete, recovering excess ammonia from the reaction mixture to obtain a .beta.-hydroxypolyamine.
Dependencies are inferred from the claim text.