摘要:
Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases and formaldehyde, obtainable by(A) sulfonation of phenols with from 1.0 to 1.5 moles of sulfuric acid per mole of phenol and(B) condensation of these sulfonation products with(a) from 0.5 to 1.8 moles of urea per mole of phenol,(b) from 0.001 to 0.5 moles of at least one other organic nitrogen-base per mole of phenol, and(c) from 1.0 to 3.0 moles of formaldehyde per mole of phenol.The condensation polymers are suitable for use as tanning agents in the leather and skin-producing industry and as spraying aids for redispersible polymer powders.
摘要:
An essentially solvent-free adhesive composition containingA) an aqueous acrylate latex andB) 30 to 150% by weight, based on the solids content of the acrylate latex A), of a mixture ofb1) 50 to 95% by weight, based on the mixture, of at least one tackifying resin andb2) 5 to 50% by weight, based on the mixture, of a compound of the formula IR.sup.1 --O--(X--O).sub.n --R.sup.2 where X is alkylene of 2 to 4 carbons, n is an integer from 1 to 8 and R.sup.1 and R.sup.2 are each hydrogen or aryl or alkaryl of 6 to 12 carbon atoms, where R.sup.1 and R.sup.2 are not both hydrogen,is prepared as described and used as adhesive for floor coverings.
摘要:
Aqueous polymer dispersions which have a long shelf life are obtainable by dispersing a mixture of from 15 to 70% by weight of a copolymer (A) of(I) from 1.5 to 15% by weight of copolymerizable compounds of 3 to 10 carbon atoms which contain a carboxyl or carboxylic anhydride group,(II) from 65 to 98.5% by weight of C.sub.1 -C.sub.20 -alkyl acrylates or methacrylates,(III) from 0 to 20% by weight of vinylaromatics,(IV) from 0 to 20% by weight of copolymerizable carbonyl compounds and(V) from 0 to 10% by weight of further copolymerizable organic compounds not stated under (I) to (IV), and from 30to 85% by weight of a copolymer (B) of from 60 to 100% by weight of the monomers (II) and from 0 to 40% by weight of the monomers (III) to (V), with the proviso that the copolymers (A) and (B) together contain, as components, more than 65% by weight of alkyl (meth)acrylates (II) whose homopolymers have glass transition temperatures of less than 0.degree. C., and that one or more of the copolymers (A) and (B) contain the monomers (IV) as components, in water with the addition of ammonia and a polyhydrazide (C), and the said dispersions are used as pressure sensitive adhesives and as adhesives for laminated films.
摘要:
Condensates based on substituted ureas, their reaction products with di- and/or polyisocyanates, derivatives of di- and/or polycarboxylic acids or p-substituted phenols and/or their methylol derivatives, their preparation and their use. These condensates each contain two or more cyclic urea units and can be prepared either by reacting primary di- or polyamines with ureas and reacting the product with predominantly CH-acidic aldehydes or by reacting primary amines with isocyanates and reacting the product with predominantly CH-acidic aldehydes in the presence of an acidic catalyst. The said condensates and their reaction products are useful for the preparation of heat-curable coating materials and of binders for cathodic electrocoating.
摘要:
A heat-curable coating composition for cathodic electrocoating which becomes water-thinnable on protonation with an acid contains(A) 50-95% by weight of a polycondensation or polyaddition product having an average molecular weight of from 500 to 20,000 and containing primary and/or secondary hydroxyl groups and primary, secondary and/or tertiary amino groups, and(B) 5-50% by weight of a crosslinking agent obtainable by reactinga) an aliphatic polyhydroxy compound andb) an aromatic polyhydroxy compound withc) an aliphatic and/or cycloaliphatic polyisocyanate andd) a blocking agent.
摘要:
Heat-reactive crosslinking agents for surface coating binders, based on phenolic Mannich bases, are obtainable by reacting(A) one equivalent of a polyphenol with(B) from 0.5 to 2 equivalents of formaldehyde or of a formaldehyde-donating compound and(C) from 0.5 to 1 equivalent of one or more secondary aliphatic amines,removing the water of reaction and reacting the resulting reaction produce with(D) from 0.01 to 1 equivalent of a mono- and/or polyfunctional isocyanate compound.
摘要:
A heat-curable coating material for cathodic electrocoating is water-dilutable on protonation with an acid and contains(A) from 50 to 95% by weight of a polymer, polycondensate or polyadduct containing primary and/or secondary amino groups, as a binder, and(B) from 5 to 50% by weight of a crosslinking agent obtainable by reacting(a) a polyurethane with(b) formaldehyde or a formaldehyde-donating compound and(c) one or more secondary aliphatic amines.
摘要:
A binder which is water-dilutable on protonation with acid and obtainable by a reaction of(A) an epoxy resin having an average molecular weight of from 300 to 6,000 and on average from 1.5 to 3.0 epoxide groups per molecule and(B) from 20 to 30 mol %, based on the amount of epoxide groups present in epoxy resin (A), of one or more secondary amine and/or alkanolamine of up to 40 carbon atomsand subsequent reaction with(C) a copolymer which is based on butadiene and acrylonitrile and contains primary and/or secondary amino groups, the amount of (C) being so dimensioned that the number of primary and secondary amino groups corresponds to from 1 to 50 mol % of the epoxide groups present in the epoxy resin (A), and also(D) with one or more primary and/or secondary amine to convert any epoxide groups still present, is usedin particular for cathodic electrocoating.
摘要:
Binders which are rendered water-dilutable by protonation with an acid, a process for their preparation and their use.These binders are obtainable by reacting a(A) Reaction product of a(a) carboxyl-containing component, consisting of a(a1) carboxyl-containing butadiene/acrylonitrile copolymer having a molecular weight of from 500 to 8,000, if necessary as a mixture with(a2) a dicarboxylic acid which differs from (a1) and, if appropriate,(a3) a monocarboxylic acid and(b) a diprimary and/or primary/secondary amine, with the proviso that from 0.7 to 5 moles of the said amine are used per mole of carboxyl groups of component (a), with one or more(B) epoxy resins having a mean molecular weight from 300 to 6,000 and containing on average from 1.5 to 3.0 epoxide groups per molecule and, if required,(C) an aliphatic or cycloaliphatic secondary amine.In combination with a crosslinking agent, they are useful as coating materials, in particular for cathodic electrocoating.
摘要:
An aqueous composition is essentially free of organic solvents, plasticizers and additional tackifiers and contains water and 20-99% by weight of a polymer and 1-80% by weight of a filler, the percentages by weight being based on the sum of the components of the aqueous composition, with the exception of water.