摘要:
Aqueous lacquers, which contain grafted polybutadiene/maleic acid semi-esters or semi-amides as bonding agent, can be siccativated while the siccative is firstly dispersed in the aqueous phase and the bonding agent is dispersed in this dispersion.
摘要:
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.
摘要:
The present invention relates to a coating composition which is liquid and storable at room temperature and wherein the binder is based on a mixture of A) a crosslinking component containing at least one amino resin and/or at least one blocked polyisocyanate and B) a polyester component containing at least one hydroxyl- and carboxyl-functional polyester which also contains olefinic double bonds incorporated through unsaturated dicarboxylic acids. The present also related to coated substrates prepared from this coating composition.
摘要:
Suspensions of solid polyisocyanates inactivated on the surface of adduct formation in organic, isocyanate reactive compounds as continuous phase, which suspensions are stable in storage at room temperature and heat curable and optionally contain auxiliary agents and additives, the continuous phase containing at least 10% by weight of ether group- and ester group-containing polyhydroxyl compounds having an (average) hydroxyl functionality of from 0.5 to 3 and an (average) hydroxyl number of from 15 to 150 constituting esterification products of (i) polyether polyols having an (average) hydroxyl functionality of from 3 to 8 and an (average) hydroxyl number of from 200 to 1000 with (ii) from 40 to 90 equivalents percent of inorganic monocarboxylic acids and the use of these suspensions for the production of coatings, adhesives or sealing compounds, in particular as underseal and doorseal compounds for motor vehicles.
摘要:
The present invention relates to powder coating compositions which can be cured in the presence of heat and/or high energy radiation and contain polyurethanes which melt at temperatures of 50.degree. to 180.degree. C., have 3 to 10% by weight of olefinic double bonds in the form of (meth)acryloyl groups (calculated as .dbd.C.dbd.C.dbd., molecular weight=24) and are based on the reaction product ofA) 40 to 80 parts by weight of one or more organic polyisocyanates withB) 15 to 50 parts of weight of one or more monohydric alcohols containing (meth)acryloyl groups andC) 2 to 20 parts by weight one or more compounds which are free from (meth)acryloyl groups and contain isocyanate reactive groups.
摘要翻译:本发明涉及粉末涂料组合物,其可以在热和/或高能量辐射的存在下固化,并且包含在50-180℃的温度下熔化的聚氨酯,具有3至10重量%的烯属双键 以(甲基)丙烯酰基的形式(以C = C =分子量= 24计算),并且基于A)的反应产物:40至80重量份的一种或多种有机多异氰酸酯与B)15至 50重量份的一种或多种含(甲基)丙烯酰基的一元醇和C)2至20重量份的一种或多种不含(甲基)丙烯酰基并含有异氰酸酯反应性基团的化合物。
摘要:
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. 2-40% by weight of a reaction product of an allyl glycidyl ether and aliphatic, cycloaliphatic, araliphatic or aromatic monocarboxylic acid having 2-30 C-atoms or mixtures thereof, preferably saturated aliphatic branched chain monocarboxylic acids having 5-20 C-atoms, in particular .alpha.-ethyl-hexanoic acid isononanoic acid; andB. 6-50% by weight, preferably 20 to 55% by weight of an aminoplast resin; andC. 0-30% by weight, based on the copolymer, of a lactam, 30-100% of the number of carboxyl groups of component A.c. incorporated in the copolymer being neutralised by ammonia or mono- or polyamines.
摘要:
This invention relates to an aqueous binder composition containingA) an aqueous solution or dispersion of an organic polyol component which can be diluted with water and contains at least one polyester resin containing urethane, carboxylate and hydroxyl groups andB) a polyisocyanate component which has a viscosity of 50 to 10,000 mPa.s at 23.degree. C. and contains at least one organic polyisocyanate which is present as an emulsion in component A),wherein the NCO/OH equivalent ratio, based on the isocyanate groups of component B) and the hydroxyl groups of the polyol component present in A), is 0.5:1 to 5:1.The invention also relates to a process for the preparation of these coating compositions by emulsifying a polyisocyanate component having a viscosity of 50 to 10,000 mPa.s at 23.degree. C. and containing at least one organic polyisocyanate in an aqueous solution or dispersion of a polyester resin containing urethane, carboxylate and hydroxyl groups in an sufficient to provide an an NCO/OH equivalent ratio, based on the isocyanate groups of the polyisocyanate component and the hydroxyl groups of the polyester resin, of 0.5:1 to 5:1.
摘要:
The present invention relates to hydroxy functional polyacrylate copolymers having a molecular weight (M.sub.n) of about 2000 to 30,000 and containinga) about 1 to 70% by weight of structural units corresponding to the formula ##STR1## The present invention also relates to a process for the preparation of these hydroxy functional copolymers by reacting the corresponding anhydride functional copolymers with amino alcohols. Finally, the present invention also relates to the use of these hydroxy functional copolymers as binder components in combination with polyisocyanates for the production of polyurethane lacquers, coatings, sealants, adhesives or printing inks.
摘要:
The present invention is directed to polyester polyols in the hydroxyl number range of about 80 to 250 which are based on reaction products of(a) about 52 to 60 mole % of a polyol component with(b) about 40 to 48 mole % of dicarboxylic acid component, characterized in that(a) the polyol component is based on (i) about 2 to 30 mole % of at least one dihydric aliphatic alcohol which has at least two carbon atoms and is different from neopentyl glycol, (ii) about 5 to 40 mole % of at least one aliphatic alcohol which is at least trihydric and has at least 3 carbon atoms, (iii) about 20 to 60 mole % of bis-(hydroxymethyl)-cyclohexane and (iv) about 10 to 50 mole % of neopentyl glycol, and(b) the dicarboxylic acid component is based on (v) about 50 to 99 mole % of at least one aliphatic, saturated dicarboxylic acid or an anhydride of such an acid containing at least 2 carbon atoms and (vi) about 0.5 to 50 mole % of at least one aliphatic unsaturated dicarboxylic acid or its anhydride having at least 4 carbon atoms,the percentages under (a) and (b) adding up to 100.The present invention is also directed to the use of these polyester polyols as a binder component for two-component polyurethane lacquers containing lacquer polyisocyanates for the production of lacquer coats on molded plastic parts.
摘要:
(Meth)acrylic acid esters can be prepared by acid-catalyzed reaction of (meth)acrylic acid with alcohols in a water-immiscible solvent. After the esterification, the reaction mixture is washed with aqueous solutions having an alkaline reaction and then reacted at elevated temperature with carbodiimides. Acid numbers below 0.5 (mg of KOH/g of substance) are obtained in this way. (Meth)acrylic acid esters are used, for example, as reactive diluents or as comonomers.