Abstract: The invention relates to a process for the production of coatings using a coating composition containing as binder optionally blocked lacquer-grade polyisocyanates in combination with polyhydroxy polyacrylate resins based on copolymers of certain hydroxy alkyl(meth)acrylates, methyl methacrylate, 2-ethylhexyl acrylate and, optionally, (meth)acrylic acid, wherein the molecular weight is in the range from about 30,000 to 80,000, the content of low molecular weight constituents having molecular weights of at most about 3000 amounts to between 3 and 15% by weight, the molecular heterogeneity factor amounts to between about 1.0 and 10.0, and the parameter for the chemical heterogeneity of the copolymer is between 0 and about 0.06.

Abstract: This invention relates to lacquer binders which can be diluted with water, consisting of a mixture of:A. 50-94% by weight, preferably 55-80% by weight of a copolymer consisting of copolymerized units ofa. 30-65% by weight of an aromatic vinyl or isopropenyl compound having 8-14 C-atoms or of a methacrylic acid alkyl ester having 1-4 C-atoms in the alcohol component or mixtures thereof,b. 10-30% by weight of at least one acrylic acid alkyl ester having 1-8 C-atoms in the alcohol component,c. 1-20% by weight of maleic acid, fumaric acid, itaconic acid or semiesters thereof having 1-8 C-atoms in the alcohol component, or (meth)acrylic acid or mixtures of the aforesaid monomers,d. 0-20% by weight of at least one hydroxyalkyl ester of (meth)acrylic acid having 2-4 C-atoms in the alkyl group or glycidyl (meth)acrylate or mixtures of the aforesaid monomers,e. 10-30% by weight of N-methylol(meth)acrylic acid amide or N-methoxymethyl (meth)acrylic acid amide, preferably N-methoxymethyl(meth)acrylic acid amide, andf.

Abstract: The present invention relates to a process for the production of metal effect lacquerings having improved weather-resistance by the multilayered lacquering of various substrates, using a clear layer as top coat and a lacquer containing metal pigments to form the outer layer of the multilayered lacquering which is covered by the layer of clear lacquer, characterized in that the clear lacquer used is one the main binder of which is a two-component system consisting of:(a) a polyol component consisting essentially of polyester polyols having a low aromatic component content and optionally also polyacrylate polyols; and(b) a polyisocyanate component having biuret and/or isocyanurate groups, as well as aliphatically-bound isocyanate groups which may be blocked with isocyanate blocking agents. The present invention also relates to the substrates coated with these lacquers.

Abstract: A binder composition which has a number average molecular weight of from 1000 to 20,000 and which comprises, in copolymerized form, from 5 to 55% by weight of fumaric acid and/or maleic acid bis-glycidyl ester and from 95 to 45% by weight of one or more vinyl and/or vinylidene monomers, esterified to an acid number of from 3 to 30 mg KOH/g with from 18 to 72% by weight, based on copolymer plus fatty acid, of a fatty acid and subsequently reacted with 0 to 3% by weight, based on copolymer plus fatty acid plus dicarboxylic acid anhydride, of a dicarboxylic acid anhydride.

Abstract: Reaction products of alkyd resins and/or oil-free polyesters, (meth) acrylic acid copolymers and polysiloxans are excellent binders for high quality lacquers particularly for surface lacquers used in the motor car industry.

Abstract: A water-dilutable lacquer binder comprising a mixture of A. 20 to 94% by weight of a copolymer consisting of copolymerized units of (a) 30 to 65% by weight of an aromatic vinyl or isopropenyl compound having 8 to 14 carbon atoms or of a methacrylic acid alkyl ester having 1 to 4 carbon atoms in the alcohol component, or any mixture thereof; (b) 10 to 30% by weight of at least one acrylic acid alkyl ester having 1 to 8 carbon atoms in the alcohol component; (c) 1 to 20% by weight of maleic acid, fumaric acid, itaconic acid or their semi-esters having 1 to 8 carbon atoms in the alcohol component, (meth)acrylic acid or any mixture of the aforesaid monomers; (d) 5 to 20% by weight of at least one hydroxyalkyl ester of (meth) acrylic acid having 2 to 4 carbon atoms in the alkyl group or glycidyl (meth)acrylate or any mixture of the aforesaid monomers; and (e) 10 to 30% by weight of N-methylol (meth)acrylic acid amide or N-methoxymethyl(meth)acrylic acid amide or any mixture thereof; B.

Abstract: A binder composition which comprises (A) from 99 to 50% by weight of copolymer consisting of copolymerized units of (a) from 5 to 90% by weight of at least one aliphatic (meth)acrylate containing from 1 to 8 carbon atoms in the alcohol moiety; (b) from 0 to 60% by weight of at least one aromatic vinyl or isopropylene compound containing from 8 to 14 carbon atoms; (c) from 1 to 40% by weight of at least one comonomer selected from (I) at least one mono (meth)acrylate of an alcohol containing from 2 to 8 carbon atoms and having from 2 to 4 hydroxyl groups; and/or (II) at least one maleic acid semi-ester corresponding to the following general formula ##STR1## wherein R.sub.1 represents hydrogen or methyl; and R.sub.2 represents hydrogen, methyl, ethyl, propyl, i-propyl or phenyl; and (d) from 0 to 60% by weight of at least one other olefinically unsaturated comonomer; and (B) from 1 to 50% by weight of a saturated lactam.

Abstract: An alkyd resin stoving lacquer with decreased loss of reactive diluent yields outstandingly hard coatings if a reactive diluent mixture comprising a lactam and a hydroxyl compound is used.