摘要:
An aqueous mixture AB comprising, in its solids, a mass fraction of from 5 % to 40 % of a polyvinyl butyral B , and a mass fraction of from 60 % to 95 % of a Mannich base A which is made by a two-step reaction wherein an epoxy amine adduct A1 prepared in the first step from an epoxy resin A11 with a mixture A12 of a primary linear or branched aliphatic amine A121 having from 2 to 30 carbon atoms and a further aliphatic linear, branched or cyclic amine A122 having from 4 to 16 carbon atoms and having one primary and at least one tertiary amino group, which epoxy amine adduct A1 is reacted in the second step with formaldehyde and a phenolic compound A2 to form a Mannich base, and a method of use thereof as a binder in wash primers
摘要:
This invention relates to binder mixtures comprising mass fractions of from 70 % to 98 % of chain-extended epoxy amine adducts A and from 2 % to 30 % of carboxy functional polyesters B that contain a limited amount of aromatic constituents in mass fractions of up to 15 % and have an acid number of from 4 mg/g to 50 mg/g, a method of making these binder mixtures, and a method of use thereof in coatings for metals, wood, cardboard, plaster, and concrete.
摘要:
A chain-extended fatty acid modified hydroxy functional epoxy amine adduct ABC which contains urethane groups and comprises moieties derived from epoxy resins A , fatty acids B and amines C , which adduct is chain extended by addition of polyfunctional isocyanates D to the adducts ABC , a process for its production, and methods of use thereof in formulating air-drying aqueous coating compositions as well as one-pack and two-pack aqueous coating compositions