摘要:
Self-coating or self-layering lacquer systems from at least two different resins, oligomers, or polymers, which are emulsifiable or dispersible in water, have different surface tensions, and form self-layering phases. After the application, the phases separate into the components of the formulation.
摘要:
Binders comprise A) an aminotriazine derivative in which the primary amino groups of the triazine are methylolated on average with at least one mole of formaldehyde per mole of primary amino groups, and these methylol groups are etherified on average with at least 0.5 mol of primary alcohol per mole of methylol group and the primary alcohols are a mixture containing a) 0.5-99.5 mol % of a C.sub.1 -C.sub.4 -alkanol and b) 99.5-0.5 mol % of an alcohol of the formula R.sup.1 --O--�R.sup.2 --O!.sub.n --R.sup.3 --OH I, in which R.sup.1 is C.sub.1 -C.sub.24 -alkyl or C.sub.6 -C.sub.12 -aryl which may be unsubstituted or substituted by from one to three C.sub.1 -C.sub.8 -alkyl groups, and R.sup.2 and R.sup.3 independently of one another are C.sub.2 -C.sub.8 -alkylene and n is an integer from 1 to 100, or of a mixture of higher-boiling alcohols having a boiling point of above 120.degree. C. at 1 bar which contains at least 10 mol %, based on the higher-boiling alcohols, of alcohols of the formula I, and B) a radical polymer, polycondensation product or polyadduct which is crosslinkable with the aminotriazine derivative.
摘要:
Polyester resins suitable as binders for electrophotographic toners and for acceptor layers for the thermal diffusion printing process based on hydroxyl-containing prepolymers of olefinically unsaturated monomers obtained by(1) polymerization of a mixture of(a) from 60 to 90% by weight of styrene or of a styrene derivative,(b) from 0 to 40% by weight of one or more C.sub.1 -C.sub.12 -alkyl esters of acrylic or methacrylic acid, acrylonitrile or methacrylonitrile, acrylamide or methacrylamides, maleic anhydride or maleimide,(c) from 0 to 20% by weight of one or more hydroxyl-containing acrylic or methacrylic acid derivatives, and(d) from 0 to 2% by weight of one or more polyolefinically unsaturated monomers,to give the prepolymer A, the hydroxyl groups being incorporated in A by using hydroxyl-containing regulators if the monomer component (c) is absent, and subsequently(2) polycondensation of a mixture ofA) from 5 to 95% by weight of the prepolymer A,B) from 0 to 95% by weight of a further polyol, of a polyester or of a polyamide or a mixture thereof andC) from 5 to 70% by weight of one or more aliphatic or aromatic dicarboxylic acids C or C.sub.1 -C.sub.4 -alkyl esters thereof.
摘要:
Crosslinkable aqueous polyurethane dispersions having a long shelf life containA) polyurethane which have carbonyl groups, are dispersed in water in the presence of ammonia or of organic amines and are obtainable by reactinga) organic polyisocyanates withb) compounds which contain one or more active hydrogen atoms and one or more salt groups or one or more groups capable of salt formation andc) carbonyl-containing mono- and/or polyalcohols andd) if desired chain extenders ande) if desired polyhydroxy compounds having molecular weights of from 500 to 8,000, andB) polyhydrazides.