摘要:
Process for the manufacture of hardenable copolymers by the polymerization of unsaturated esters with unsaturated polymerizable monomers containing no free COOH groups, wherein an olefinically unsaturated diester containing OH groups is used as the unsaturated ester, said diester being obtained by reacting olefinically unsaturated dicarboxylic acids or the anhydrides thereof with a polyhydric alcohol and a monoepoxide compound in one or more steps, characterized in that the copolymerization of the diesters with monomers which contain no free COOH groups is carried out in the presence of copolymerizable monomers containing free COOH groups, and the use of the copolymers as hardenable binders for lacquers and/or coating compositions.
摘要:
A process for the preparation of copolymers containing hydroxyl groups by radical reaction of(A) 10 to 30% by weight of at least one glycidyl ester containing 12 to 14 carbon atoms, of an aliphatic saturated monocarboxylic acid with a tertiary or quaternary .alpha.-carbon atom; and(B) 90 to 70% by weight of at least two unsaturated copolymerisable monomers, at least one of which contains at least one carboxyl group,wherein component (A) is introduced first to a reaction zone and is then reacted at a temperature of at least 140.degree. C. with component (B) and a radical initiator, the component (B) containing a monomer having carboxyl groups,wherein for the preparation of low-viscosity copolymers component (A) is reacted at 140 to 200.degree. C. by substance polymerisation until a degree of reaction of at least 95% is achieved, the component (B) containing at least 3.3% by weight of the monomer having carboxyl groups, and an article coated with a product of said process.
摘要:
An aqueous electrophoretic coating material, which can be deposited at the cathode and contains(A) 90 to 50% by weight, based on the total portion of synthetic resin vehicle, of one or several polycondensation, polymerization and/or poly-addition resins, the resin or, in the event that several resins are present, their mixture(a) having a number average molecular weight (Mn) of 700 to 10,000(b) having 1.2.times.10.sup.23 to 21.7.times.10.sup.23 lateral or terminal double bonds per 1,000 g, corresponding to a hydrogenation iodine number of 5 to 90,(c) optionally containing primary and/or secondary hydroxyl groups, corresponding to a hydroxyl number of 0 to 450 mg KOH/g of resin, and(d) tertiary amino groups corresponding to an amine number of 30 to 450 mg KOH/g of resin.(B) 10 to 50% by weight of one or several cross linking agents, which are compounds with methane tricarboxylic acid amide units of the formula ##STR1## which contain, on the average, at least 2 groups with reactive hydrogens per molecule and are derived from a reaction product of a monoisocyanate or polyisocyanate with a malonic acid derivative, and(C) 0 to 10% by weight of one or several capped diisocyanates and/or polyisocyanates, as well as its use.
摘要:
Self-crosslinking cationic paint binders in which the crosslinking is effected through the reaction of methane-carboxylic acid dialkylester monoamide structures with free hydroxyl or amino groups on the resin are described. The crosslinking functionality is provided by reaction of a polyisocyanate with a corresponding quantity of a CH-active alkyl ester. The alkyl ester is preferably a malonic acid dimethylester or malonic acid diethylester.
摘要:
The invention relates to a curing component (A) containing active CH groups, which contains at least two groups of the formula (I) ##STR1## or structural units of the formula (I') or (I") ##STR2## in which: A denotes ##STR3## X and Y are identical or different and denote ##STR4## CO.sub.2 R.sup.1, CN, NO.sub.2, CONH.sub.2, CONR.sup.1 H or CONR.sup.1 R.sup.1, where the R.sup.1 radicals may be identical or different and represent a hydrocarbon radical, preferably an alkyl radical having 1 to 12 carbon atoms, which may also be interrupted by oxygen or an N-alkyl radical, with the proviso that only one of the two radicals X and Y may represent the NO.sub.2 group;A' denotes ##STR5## X' and Y' are identical or different and denote ##STR6## Curable mixtures of (A) and a Michael acceptor (B) and, if appropriate diluents and customary additivies cure rapidly even at low temperatures and are suitable, in particular for surface-coating preparations.
摘要翻译:本发明涉及含有活性CH基团的固化组分(A),其含有至少两个式(I)的基团(I)或式(I')或(I“)的结构单元, (I')(I')其中:A表示X和Y相同或不同,表示CO 2 R 1,CN,NO 2,CONH 2,CONR 1 H或CONR 1 R 1,其中R 1基团 可以相同或不同,表示烃基,优选具有1至12个碳原子的烷基,其也可被氧或N-烷基中断,条件是两个基团X和Y中只有一个可以 代表NO2组; A'表示 X'和Y'相同或不同,表示(IMA)>(A)和迈克尔受体(B)的可固化混合物,如果合适,稀释剂和常规添加剂即使在低温下也能快速固化, ,特别是表面涂层制剂。
摘要:
Liquid coating agent based on a polymer containing acetoacetate groups and a polyamine in the form of the corresponding aldimine or ketimine, the polymer containing acetoacetate groups being obtained by reaction of a polyepoxide with water, an amine or a hydroxycarboxylic acid and subsequent esterification or transesterification with acetoacetic acid. These liquid coating agents are particularly suitable as binders in two-component automobile repair fillers or as two-component primers.
摘要:
Crosslinking components for hydroxy and/or primary and/or secondary amino group containing paint binders for the crosslinking of synthetic resins carrying at least two groups capable of ester or amide formation with carboxylic acids. In particular there is disclosed the use of the crosslinking components in compositions for electrodeposition (ED) whereby at 120.degree. C. and above coatings with extraordinary paint performance are obtained. The use of methyl or ethyl esters gives extremely low condensation losses. The crosslinking components are obtained through reaction of one mole of a diisocyanate, preferably at room temperature, in the presence of sodium, or preferably sodium phenolate, as catalyst, with at least one mole of a CH-active alkyl ester of the general formula X--CH.sub.2 --COOR, wherein X is --COOR, --CN or CH.sub.3 --CO-- and R is an alkyl radical with 1 to 8 C-atoms and subsequent reaction of the free isocyanate groups with polyamines of the general formula H.sub.2 N--(R--NH).sub.n --R--NH.sub.2, wherein n is 0 to 3 and/or (poly)aminoalcohols of the formula N.sub.2 H--(R--NH).sub.n --R--OH, wherein n is 0 to 3, or HO-- (R--NH).sub.n --R--OH, wherein n is 1 to 3, and R is an alkylene radical in all cases.
摘要:
Process for preparing copolymers from esters of an unsaturated carboxylic acid with at least one other unsaturated monomer, characterized in that the following components are copolymerized in radical substance polymerization:(A) 5 to 60 parts by weight of at least one diester of an .alpha.,.beta.-olefinically unsaturated dicarboxylic acid having 1 to 8 carbon atoms in the ester group,(B) 10 to 70 parts by weight of at least one vinyl aromatic hydrocarbon having one vinyl group,(C) 0 to 30 parts by weight of at least one glycidyl ester of an aliphatic saturated monocarboxylic acid branched in the .alpha.-position,(D) 0 to 50 parts by weight of at least one ester, amide and/or anhydride of an .alpha.,.beta.-olefinically unsaturated mono- and/or dicarboxylic acid,(E) 0 to 40 parts by weight of at least one .alpha.,.beta.-olefinically unsaturated monocarboxylic acid,the sum of components (A) to (E) being 100 parts by weight, whilst at least a part of component (A) is at first introduced into the reaction vessel alone or in combination with at least a part of component (C) and a mixture of component (B) with at least one of components (D) and (E) and any remaining parts of components (A) and/or (C) is added in batches at 140.degree. to 200.degree. C. together with a radical initiator, alone or in conjunction with a regulator, and if component (C) is present, at least an equimolar quantity of component (E) is used; and the use of the products thus obtained as binders for the preparation of coating compositions.
摘要:
Products of the reaction of (a) a polyisocyanate, (b) a CH-active alkyl ester, (c) a polyoxyalkyleneamine and (d) if appropriate a further NH- and/or OH-reactive compound as the curing component for binders (B) which contain groups which are capable of amide and/or ester formation.Mixtures of (A) and (B), and where appropriate diluents (C) and additives (D), have a long shelf life, even in aqueous systems, and are particularly suitable for aqueous paint formulations.
摘要:
Electrodepositable stable coating preparation essentially comprising a synthetic resin (A), which contains amino groups and, if appropriate, hydroxyl groups, a hardener (B) which is capable of transesterification and/or transamidation, water as diluent (C), if appropriate, organic solvents (D), and also the conventional coating additives and, if appropriate, hardening catalysts (E), wherein the organic solvents content is a maximum of 10% by weight, relative to the solids content.The invention furthermore relates to a process for the preparation of this coating preparation, which is distinguished by a low organic solvents content with good storage stability.