摘要:
The invention relates to a process for producing a water-absorbing material by coating water-absorbing polymer particles with a film-forming polyurethane and pyrogenic silica and heat treating the coated particles. The invention further relates to the water-absorbing material obtainable according to the process of the invention. The water-absorbing material has improved wicking ability (FHA) and fixed swell rate (FSR).
摘要:
Thermoplastic molding compositions comprising A) from 10 to 98.9% by weight of at least one thermoplastic polyester, B) from 0.01 to 50% by weight of B1) at least one highly branched or hyperbranched polycarbonate having an OH number of from 1 to 600 mg KOH/g of polycarbonate (to DIN 53240, part 2), or B2) at least one highly branched or hyperbranched polyester of the AxBy type where x is at least 1.1 and y is at least 2.1 or mixtures thereof C) from 0.1 to 10% by weight of at least one carbodiimide, D) from 0 to 60% by weight of further additives, the sum of the percentages by weight of components A) to D) adding up to 100%.
摘要:
A cleaning implement comprises a modified open-cell foam with a density in the range from about 5 to about 1,000 kg/m3 and with an average pore diameter in the range from about 1 μm to about 1 mm, comprising an amount in the range from about 1 to about 2,500% by weight, based on the weight of the unmodified open-cell foam, of at least about one water-insoluble polymer (b), selected from polystyrene, styrene copolymers, polybutadiene, butadiene copolymers, polyvinylesters, polyvinylethers, copolymers from (meth)acrylic acid with at least one (meth)acrylate, and polyurethanes, with the proviso that styrene-acrylonitrile-C1-C10-alkyl (meth)acrylate terpolymers, styrene-butadiene-n-butyl acrylate terpolymers, and styrene-maleic anhydride copolymers are excluded.
摘要:
A process for producing poromeric synthetic leather comprises I. producing an essentially nonporous impregnate by impregnating a textile sheet material with an aqueous polyurethane dispersion and drying, and II. producing a poromeric synthetic leather from the impregnate by subjecting the impregnate to the action of an aqueous solution of a Brønsted base.
摘要:
Modified open-cell aminoplastic foams with a density in the range from 5 to 1,000 kg/m3 and with an average pore diameter in the range from 1 μm to 1 mm, comprising an amount in the range from 1 to 2,500% by weight, based on the weight of the un-modified open-cell foam, of at least one water-insoluble polymer (b), selected from polystyrene, styrene copolymers, polybutadiene, butadiene copolymers, polyvinylesters, polyvinylethers, copolymers from (meth)acrylic acid with at least one (meth)acrylate, and polyurethanes with the proviso that styrene-acrylonitrile-C1-C10-alkyl (meth)acrylate terpolymers, styrene-butadiene-n-butyl acrylate terpolymers, and styrene-maleic anhydride copolymers are excluded
摘要:
The present invention relates to a porous material comprising (a) an erodible open-cell foam with a density in the range from 5 to 1,000 kg/m3 and with an average pore diameter in the range from 1 μm to 1 mm, (b) a polymer matrix which is water-soluble or water-swellable or readily erodible, (c) an active ingredient selected from the group of surfactants, organic solvents, complexing agents, and bleaching agents, wherein said active ingredient (c) is absorbed by or dissolved in said polymer matrix (b) or chemically linked to said polymer matrix (b).
摘要翻译:本发明涉及一种多孔材料,其包括(a)密度为5至1,000kg / m 3,平均孔径在1μm至1mm范围内的可侵蚀的开孔泡沫,(b) 一种聚合物基质,其是水溶性的或水溶胀性的或容易被侵蚀的,(c)选自表面活性剂,有机溶剂,络合剂和漂白剂的活性成分,其中所述活性成分(c)被 溶于所述聚合物基质(b)中或与所述聚合物基质(b)化学连接。
摘要:
Compounds containing carbodiimide units and carboxyl or carboxylate groups (compounds V), derived from a) aliphatic or araliphatic C4 to C20 polyisocyanates (component a) b) amino carboxylic acids or amino carboxylic salts (component b) and c) if desired, further compounds which carry groups able to react with isocyanate groups in an addition reaction (component c) d) if desired, other isocyanates (component d), the carbodiimide units deriving essentially exclusively from the isocyanate groups of component (a).
摘要:
Latent-crosslinking aqueous polyurethane dispersions comprising I) a disperse phase (P.I) comprising Ia) a polyurethane (Ia) which carries carbodiimide groups in addition to hydrophilic groups which make it dispersible in water but carries essentially no carboxyl groups or Ib) a physical mixture of Ibi) a polyurethane (Ibi) which carries hydrophilic groups which make it dispersible in water but carries essentially no carbodiimide or carboxyl groups and Ibii) a carbodiimide (Ibii) which carries essentially no hydrophilic groups which make it dispersible in water, and II) a disperse phase (P.II) comprising another polymer (II) which carries carboxyl groups and essentially no carbodiimide groups.
摘要:
A composition comprising a carbodiimide and a polymer, wherein the carbodiimide comprises a reaction product of a) at least one of an aliphatic C4 to C20 polyisocyanate and an araliphatic C4 to C20 polyisocyanate, b) at least one of a hydroxy carboxylic acid and a hydroxy carboxylic salt, c) optionally, a further compound carrying groups able to react with isocyanate groups in an addition reaction, d) optionally, at least one other isocyanate, and the carbodiimide units being derived essentially exclusively from the isocyanate groups of component a), and the polymer comprises a reaction product of an ethylenically unsaturated carboxylic acid and at least one of a (meth)acrylate, a vinyl ester of a carboxylic acid, a vinyl aromatic compound, an ethylenically unsaturated nitrile, a vinyl halide, an aliphatic hydrocarbon, and a free-radically polymerizable monomer. Also, a method of applying the composition on and/or in a substrate.