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:
A process is disclosed for preparing aqueous, oxidatively-drying alkyd resins. The resins are useful as binders in aqueous lacquers and coating compositions.
摘要:
The present invention relates to polymers capable of oxidative crosslinking, characterized in that they contain 10 to 80% by weight of structural units corresponding to formula (I) and/or (Ia) ##STR1## wherein R.sub.1 is an aliphatic saturated hydrocarbon radical containing 2 to 6 carbon atoms, provided that at least 2 carbon atoms are arranged between the nitrogen atom and the oxygen atom, andR.sub.2 at least 30% of the substituents R are monoolefinically or polyolefinically unsaturated hydrocarbon radicals and the remainder, i.e. up to 70% of the substituents R.sub.2, are saturated aliphatic and/or aromatic hydrocarbon radicals which may optionally contain oxygen and/or nitrogen as hetero atoms in the form of ether, ester, keto, urethane, urea and/or amide groups, provided that substituent R.sub.2 contains at least 2.0% by weight, based on the weight of the polymer, of aliphatically unsaturated double bonds, expressed as C.dbd.C (molecular weight=24).The present invention also relates to a process for the production of these polymers and to the use of these polymers as binders or binder component for coating or sealing compositions.
摘要:
The invention relates to an aerially-crosslinking, pigmented or non-pigmented coating agent consisting of conventional lacquer auxiliaries and an aerially-crosslinking binder which has been reacted to form a dicarboxylic acid semi-ester by the reaction of a copolymer consisting of copolymerized units of at least one ester carrying at least one 1,2-epoxide group or hydroxyl group of an .alpha.,.beta.-monoolefinically unsaturated C.sub.3 -C.sub.5 -carboxylic acid and at least one vinyl or vinylidene monomer which is different therefrom with at least one drying fatty acid and optionally with at least one cyclic dicarboxylic acid anhydride, characterized in that the coating agent contains as an additional lacquer auxiliary from 0.2 to 2% by weight of at least one .alpha.-dicarbonyl compound, based on the aerially-crosslinking binder.
摘要:
An air-drying lacquer binder comprising a copolymer of copolymerized units of20 to 55% by weight of styrene,5 to 30% by weight of glycidyl(meth)acrylate, and0 to 50% by weight of at least one (meth)acrylic acid ester with 1 to 10 carbon atoms in the alcohol component,Which has been esterified with0 to 15% by weight of at least one natural, drying fatty acid, and10 to 50% by weight of isomerized drying fatty acids(the sum of the percentage contents amounting to 22 - 50 percent by weight) based on the copolymer and drying fatty acids and dicarboxylic acid anhydride subsequently used, up to an acid number of
摘要:
An air-drying and oven-drying lacquer binder based on a copolymer having copolymerized units of5 to 40% by weight of styrene,10 to 50% by weight of at least one hydroxyalkyl(meth)acrylate with 2 to 4 carbon atoms in the alkyl group, and10 to 40% by weight of at least one (meth)acrylic acid ester with 1 to 10 carbon atoms in the alcohol component, esterified with10 to 50% by weight, based on the copolymer and drying fatty acid and dicarboxylic acid anhydride, of a drying fatty acid,from 10 to 70 mole % of the hydroxyl groups of the incorporated hydroxyalkyl(meth)acrylate units having been esterified with the drying fatty acid and thereafter from 0.5 to 20 mole % of the hydroxyl groups of the incorporated hydroxyalkyl(meth)acrylate units having been reacted with from 0.5 to 10% by weight, based on the lacquer binder, of at least one dicarboxylic acid cyclic anhydride to form the semiester of the corresponding dicarboxylic acid having an overall acid number of from 5 to 30, the overall acid number being composed of an acid number of from 1 to 10, as determined after esterification with the drying fatty acid and emanating from the free fatty acid, and of acid number of from 1 to 29, as determined on the solvent-free lacquer binder (end product) and emanating from formation of the semiester.
摘要:
Air-drying lacquer binders comprising copolymers of copolymerised units of20 to 55% by weight of styrene,5 to 30% by weight of glycidyl (meth)acrylate, and0 to 50% by weight of at least one (meth)acrylic acid ester having from 1 to 10 C-atoms in the alcohol component,Which copolymers have been esterified to acid numbers of from 0 to 10 with from 22 to 50% by weight of air-drying fatty acids, based on the quantity of copolymer and drying fatty acids and dicarboxylic acid anhydride, and the hydroxyl groups thereby formed have subsequently been reacted with from 0.5 to 3% by weight of dicarboxylic acid anhydride, based on the quantity of copolymer and drying fatty acids and dicarboxylic acid anhydride, characterized in that the binders have acid numbers of from 5 to 15, these final acid numbers being made up of the acid numbers of from 0 to 10 obtained by the esterification with drying fatty acids and the acid numbers of from 1 to 15 obtained from the reaction with the dicarboxylic acid anhydride.
摘要翻译:空气干燥漆粘合剂,其包含20至55%共聚单元的共聚物,其中苯乙烯重量为5至30%,丙烯酸(甲基)酯为重量的5至30%,和至少一种(甲基)丙烯酸酯的重量的0至50% 在醇组分中具有1至10个C原子,根据共聚物和干燥脂肪的数量,共聚物已被确定为0至10的数量,具有22至50%的空气干燥脂肪酸的重量 酸和二羧酸酐,根据共聚物和干燥脂肪酸和二羧酸酸酐的数量,其形成的羟基根据重量的比例从0.5%至3%按重量计反应,其特征在于粘结剂 从5到15的酸值,这些最终酸值是由干酪脂肪酸所得的0至10的酸值和与二羧酸反应获得的1至15的酸值的酸值 ID ANHYDRIDE。
摘要:
Penta- or hexahydric sugar alcohols are outstandingly suitable as a polyol component for the preparation of polyesters or alkyd resins. Secondary reactions resulting in darkening are substantially avoided if as small a quantity as possible of aromatic polycarboxylic acid components is used.