摘要:
An aqueous coating material, substantially or completely free from volatile organic compounds and preparable by mixing with one another (A) at least one aqueous primary dispersion comprising dispersed and/or emulsified, solid and/or liquid polymer particles and/or dispersed solid core/shell particles with a diameter ≦500 nm, preparable by free-radical microemulsion or miniemulsion polymerization of at least one olefinically unsaturated monomer in the presence of at least one hydrophobic additive, and (B) at least one secondary aqueous polyurethane dispersion comprising at least one polyurethane and at least one light stabilizer selected from the group of the regenerable free-radical scavengers, a process for preparing it and its use.
摘要:
Aqueous primary dispersion, substantially or entirely free of volatile organic compounds, and comprising dispersed and/or emulsified, solid and/or liquid polymer particles and/or dispersed solid core/shell particles with a particle diameter≦500 nm, preparable by free-radical micro- or miniemulsion polymerization of at least one olefinically unsaturated monomer in the presence of at least one hydrophobic additive and of at least one oligomeric polyester with a number-average molecular weight of from 150 to 1 500 daltons, a hydroxyl number of from 100 to 1 000 mg KOH/g, and an acid number
摘要:
Novel polyurethanes containing sulfide groups which comprise at least one group of the general formula I in the polymer main chain and/or at least one group of the general formula II incorporated at the chain end: —X—A—S—B—Y— (I) —X—A—S—B—YH (II) in which the variables have the following definitions: S is the sulfur atom; X and Y independently of one another are oxygen atoms, sulfur atoms or groups —NZ where Z is the hydrogen atom or an alkyl radical of 1 to 10 carbon atoms; and A and B independently of one another are divalent organic radicals; novel polymer mixtures based thereon, and the use of the novel polyurethanes and polymer mixtures and dispersions thereof for the preparation of coating materials, adhesives and sealing compounds.
摘要:
Aqueous (meth)acrylate copolymer dispersions preparable by (I) subjecting at least one monomer (a) containing at least one hydrophilic functional group which brings about the water-solubility or water-dispersibility of the (meth)acrylate copolymer to (co)polymerization in aqueous/organic solution using at least one oil-soluble initiator which provides free radicals, (II) where appropriate, fully or partly neutralizing the resulting (co)polymer I, (III) dispersing the resultant solution of the (co)polymer I, (partly) neutralized where appropriate, in water, and (IV) copolymerizing and/or graft-copolymerizing at least one monomer (b) in the presence of the resultant dispersion III using oil-soluble initiators which provide free radicals, the monomer or monomers (b) containing at least one hydrophilic functional group which brings about no substantial water-solubility or water-dispersibility of the (meth)acrylate copolymer, or at least one hydrophobic group, and being selected in nature and amount such that the resulting (meth)acrylate copolymer is soluble or dispersible in water.
摘要:
A coating composition consisting of at least three components, comprising a component (I) comprising at least one oligomeric or polymeric resin containing functional groups which react with isocyanate groups, as binder (A), a component (II) comprising at least one polyisocyanate as crosslinking agent (F), and a component (III) which consists of water or comprises water and at least one binder (A), wherein component (I) and/or (III) comprise or comprises at least one branched, cyclic and/or acyclic C9-C16-alkane which is functionalized using at least two hydroxyl groups.
摘要:
Polyurethane-modified addition copolymers preparable by free-radically (co)polymerizing an olefinically unsaturated monomer (a) in an aqueous or nonaqueous medium comprising at least one reaction product (A/B) of(A) at least one addition copolymer containing on average per molecule at least 0.1 isocyanate-reactive functional groups and preparable by free-radical copolymerization of at least a) at least one olefinically unsaturated monomer and b) at least one olefinically unsaturated monomer different than the olefinically unsaturated monomer (a1) and of the general formula I R1R2C═CR3R4 (I) in which the radicals R1, R2, R3, and R4 each independently of one another are hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl, arylalkyl or arylcycloalkyl radicals, with the proviso that at least two of the variables R1, R2, R3, and R4 are substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl radicals, especially substituted or unsubstituted aryl radicals; in an aqueous medium or nonaqueous medium; and (B) at least one polyisocyanate; processes for preparing them, and their use.
摘要:
A coating composition consisting of at least three components, comprising a component (I) comprising at least one hydroxyl-containing oligomeric or polymeric resin dispersed or dissolved in one or more organic, optionally water dilutable solvents, as binder (A), a component (II) comprising at least one polyisocyanate dispersed or dissolved in one or more organic, optionally water dilutable solvents, as crosslinking agent (F), and a component (III) which comprises water, wherein component (I) comprises at least one hydroxyl-containing polyacrylate resin (A) containing polyether sidegroups and/or endgroups of the general formula I Y—(—O—R—)n— (I) in which the index and variables have the following meanings: n=3 to 100; R=C2 to C6 alkanediyl and C3 to C8 cycloalkanediyl; Y=hydrogen atom or C1 to C4 alkyl; as binder (A).
摘要翻译:由至少三种组分组成的涂料组合物,其包含分散或溶解在一种或多种有机,任选的水可稀释溶剂中的至少一种含羟基的低聚物或聚合物树脂作为粘合剂(A),组分( II)包含分散或溶解在一种或多种有机,任选水可稀释溶剂中的至少一种多异氰酸酯作为交联剂(F)和包含水的组分(III),其中组分(I)包含至少一个含羟基的 含有聚醚侧基和/或通式Iin的端基的聚丙烯酸酯树脂(A),其指数和变量具有以下含义:n = 3〜100; R = C2〜C6烷二基和C3〜C8环烷二基; Y =氢原子或 C1〜C4烷基;作为粘合剂(A)。
摘要:
A hydrophilic or hydrophobic polyurethane containing on average per molecule at least one olefinically unsaturated structural unit selected from the group consisting of pendant, internal, and terminal, acyclic and cyclic terpene units; graft copolymers of the polyurethane with olefinically unsaturated monomers, processes for preparing the polyurethane and the graft copolymers, and their use for preparing coating materials, adhesives, and sealing compounds.