Abstract:
The invention relates to thermoplastic molding materials containing a mixture consisting of: (A) 30 to 68.99 % by weight, with regard to the sum of constituents (A), (B), (C) and (D), of a methyl methacrylate polymer; (B) 30 to 68.99 % by weight, with regard to the sum of constituents (A), (B), (C) and (D), of a copolymer obtained by polymerizing a vinyl aromatic monomer and a vinyl cyanide; (C) 1 to 39.99 % by weight, with regard to the sum of constituents (A), (B), (C) and (D), of a graft copolymer obtained from (C1) 60 to 90 % by weight, with regard to (C), of a core obtained by polymerizing a 1,3-diene and a vinyl aromatic monomer, (C2) 5 to 20 % by weight, with regard to (C), of a first graft shell obtained by polymerizing a vinyl aromatic monomer, a C1-C8 alkyl ester of methacrylic acid and a cross-linking monomer, (C3) 5 to 20 % by weight, with regard to (C), of a second graft shell comprised of an alkyl(meth)acrylate polymer, with the provision that the ratio of (C2) to (C3) ranges from 2:1 to 1:2, and; (D) 0.01 to 39 % by weight, with regard to the sum of constituents (A), (B), (C) and (D), of at least one highly branched or hyperbranched polymer selected from the group consisting of (D1) highly branched or hyperbranched polycarbonates and (D2) highly branched or hyperbranched polyesters of type Ax + By, whereby x is at least 1.1 and y is at least 2.1. The invention also relates to methods for producing these molding compounds, to the use thereof, to the shaped bodies, fibers, films and foams that can be obtained therefrom, and to demolding auxiliary agents for thermoplastic molding compounds.
Abstract:
The invention relates to a method for solubilising hydrophobic active substances in an aqueous medium, characterised in that at least one hyper-branched polymer is used as an auxiliary agent, obtained by (a) producing at least one hyper-branched polyester, (a1) polycondensing at least one dicarboxylic acid or one or more derivatives thereof with one or more at least trifunctional alcohols or, (a2) polycondensing at least one tricarboxylic acid or higher polycarboxylic acid or one or more derivatives thereof with one or more diols or, (a3) polycondensing at least one dicarboxylic acid or at least one derivative thereof with a mixture of at least one diol and at least one at least tetrafunctional alcohol or, (a4) polycondensing at least one diol with a mixture of at least one dicarboxylic acid or at least one derivative thereof and at least one tri- or tetracarboxylic acid or at least one derivative thereof, (b) reacting with at least one isocyante or a chloroformate ester, which carry the and/or the at least one polyalkylene oxide unit bound by a carbonate, urea or urethane group, or a hyper-branched polyester (a).
Abstract:
The invention relates to a method for the production of highly functional, highly branched polyureas. Said method consists in reacting one or several carbonates with one or several amines comprising at least two primary and/or secondary amino groups. At least one amine comprises at least three primary and/or secondary amino groups.