摘要:
The invention relates to copolymers which comprise, in copolymerized form, a1) 30 to 90% by weight of at least one monoethylenically unsaturated C3-C8-carboxylic acid or of an anhydride or water-soluble salt thereof, a2) 3 to 60% by weight of at least one monomer comprising sulfo groups, a3) 3 to 60% by weight of at least one nonionic monomer of the formula (I) H2C═C(R1)COO—[R2—O]o—R3 (I) in which R1 is hydrogen or methyl, R2 are identical or different, linear or branched C2-C6-alkylene radicals which may be arranged in blocks or randomly, and R3 is hydrogen or a straight-chain or branched C1-C4-alkyl radical and o is a natural number from 3 to 50, a4) 0 to 30% by weight of one or more further ethylenically unsaturated monomers which are polymerizable with a1), a2) and a3), where the sum of a1), a2), a3) and a4) adds up to 100% by weight.
摘要:
A paper size which comprises a stable aqueous dispersion of a reactive size, from 5 to 100% by weight, based on the reactive size, of a substantially linear nitrogen-comprising polymer having at least 3 mmol/g of basic nitrogen atoms, and from 1 to 50% by weight of cationic starch having a degree of substitution of at least 0.05 is described. The paper size has a good sizing effect and a stable viscosity.
摘要:
Branched polyesters with sulfonate groups obtainable by the reaction of the components A, B, optionally C and optionally D to give branched polyesters, where the component A is selected from the group of α,β-olefinically unsaturated dicarboxylic acids, and the component B is selected from the group of tri- or higher-functional alcohols, the optional component C is selected from the group of difunctional alcohols or of difunctional carboxylic acids without α,β-olefinically unsaturated bonds, the optional component D is selected from fatty acids or fatty alcohols, and the subsequent reaction of the resulting branched polyesters with hydrogen sulfite, where the molar amount of hydrogen sulfite is at most 95 mol %, based on the amount of α,β-olefinically unsaturated dicarboxylic acid.
摘要:
Phosphate-free detergent formulations for machine dishwashing, comprising, as components: a) from 1 to 20% by weight of a mixture of a1) from 5 to 95% by weight of hydrophobically modified polycarboxylates I formed from a11) from 20 to 80 mol % of at least one monoethylenically unsaturated C3-C10-mono- or -dicarboxylic acid or anhydrides thereof, a12) from 0 to 80 mol % of at least one monomer of the general formula (I) in which R1, R2 and R3 are each independently H, CH3 or C2H5, and R4 is a linear, branched or cyclic radical having from 1 to 6 carbon atoms or an aromatic radical having from 6 to 12 carbon atoms, and a13) from 0 to 20 mol % of at least one further monomer selected from the group consisting of olefins having 10 or more carbon atoms or mixtures thereof and reactive polyisobutenes having an average of from 12 to 100 carbon atoms, a2) from 5 to 95% by weight of hydrophilically modified polycarboxylates II formed from a21) from 50 to 99 mol % of acrylic acid or acrylic acid salt, a22) from 0 to 50 mol % of a further acidic monomer and/or of a water-soluble salt thereof, a23) from 0.1 to 20 mol % of at least one nonionic monomer of the general formula (II), where the sum of a1) and a2) adds up to 100% by weight, b) from 0 to 50% by weight of complexing agents, c) from 0.1 to 20% by weight of low-foam nonionic surfactants, d) from 0.1 to 30% by weight of bleaches and if appropriate bleach activators, e) from 0 to 60% by weight of further builders, f) from 0 to 8% by weight of enzymes, g) from 0 to 50% by weight of one or more further additives.
摘要:
Paper size mixtures comprising a reactive size dispersed in water and a polymer, which are obtainable by mixing (a) an aqueous dispersion of a reactive size whose dispersed particles have a mean particle diameter of less than 500 nm, the dispersion being obtainable by emulsifying at least one reactive size in water in the presence of at least one surfactant, and (b) at least one emulsion polymer and/or at least one water-soluble polymer which does not have a dispersing effect with respect to reactive sizes and/or a water-dispersible polymer, and use of said paper size mixtures for the engine sizing and surface sizing of paper and paper products.
摘要:
A process for printing on substrates, wherein the substrates are pretreated with a composition which comprises a polymer obtainable by free radical polymerization of ethylenically unsaturated compounds (monomers) (referred to below as polymer for short), and at least 1% by weight of the monomers are monomers having two carboxyl groups (dicarboxylic acid) or a dicarboxylic anhydride group (summarized below as anhydride monomer for short).
摘要:
Alkylketene dimers are prepared by reacting acyl chlorides with tertiary amines in a molar ratio of from 1:1 to 1:1.6 at from 65 to 150° C. and with a residence time of from 1 to 30 minutes in the absence of solvents with thorough mixing and isolation of the alkylketene dimers.
摘要:
A process for the preparation of low-solvent alkyl diketenes of the general formula: ##STR1## in which R.sup.1 denotes C.sub.10 -C.sub.30 alkyl or C.sub.10 -C.sub.30 alkenyl and R.sup.2 denotes hydrogen or C.sub.1 -C.sub.8 alkyl, by causing carboxylic chlorides of the formula II ##STR2## in which R.sup.1 and R.sup.2 have the aforementioned meanings, to react with tertiary amines of the formula III ##STR3## in which R.sup.3, R.sup.4, R.sup.5 denote C.sub.1 -C.sub.12 alkyl or C.sub.3 -C.sub.12 cycloalkyl and R.sup.3 and R.sup.4 together denote a C.sub.2 -C.sub.11 alkylene dichain optionally interrupted by oxygen or nitrogen, in a substantially water-immiscible, inert solvent, wherein distillation is carried out at temperatures ranging from 80.degree. to 130.degree. C. and pressures ranging from 10 to 500 mbar and subsequently with the addition of water or steam.
摘要:
Flexible, sheet-like substrates having an abrasive surface, which are obtainable by applying an aqueous solution or dispersion of at least one precondensate of a heat-curable resin to the top and/or bottom of a flexible, sheet-like substrate in an amount of at least 5 to 90% by weight, based on the uncoated, dry substrate, crosslinking the precondensate and drying the treated substrate.
摘要:
A water-soluble or water-dispersible copolymer comprises copolymerized units a) of at least one ethylenically unsaturated monomer with a saccharide side group and b) of at least one hydrophilic ethylenically unsaturated monomer different from (meth)acrylamide, where the weight fraction of the ethylenically unsaturated monomers with a saccharide side group is 5 to 95% by weight. The copolymers exhibit high affinity to inorganic surfaces or hydrophilic fibers, such as cotton. They serve as soil release and/or graying-inhibiting polymers in textile detergents or minimize the risk of microbial colonization of materials coated therewith.