Abstract:
Thermoplastic moulding composition (F), comprising: A) from 5 to 80% by weight of a graft polymer (A) having bimodal particle size distribution and a moisture content of 0 to 27 % by weight, made, based on (A), a1) from 40 to 90% by weight of an elastomeric particulate graft base (a1), obtained by emulsion polymerization of, based on (a1), a11) from 70 to 100% by weight of at least one conjugated diene, or of at least one C1-8 -alkyl acrylate, or of mixtures of these, a12) from 0 to 30% by weight of at least one other monoethylenically unsaturated monomer and a13) from 0 to 10% by weight of at least one polyfunctional, cross linking monomer; a2) from 10 to 60% by weight of a graft a2), made, based on a2), a21) from 64 to 76% by weight of at least one vinyl aromatic monomer, a22) from 24 to 36% by weight of acrylonitrile, a23) from 0 to 30% by weight of at least one other monoethylenically unsaturated monomer, and a24) from 0 to 10% by weight of at least one polyfunctional, cross linking monomer; B) from 10 to 94% by weight of a thermoplastic polymer (B) having a viscosity number VN of from 50 to 120 ml/g, made, based on (B), b1) from 64 to 72% by weight of at least one vinyl aromatic monomer, b2) from 28 to 36% by weight of acrylonitrile, and b3) from 0 to 4 % by weight of at least one other monoethylenically unsaturated monomer; whereby, the difference of the acrylonitrile content in component (B) and that in the graft shell a2) is minimal 2% by weight and maximal 6% by weight and optionally further components, have preferred optical appearance when coated with metal.
Abstract:
The invention relates to a hollow body with a capacity of at least 250 ml, the casing of which consists of polystyrene and is produced by injection stretch blow moulding. The invention also relates to the method of producing this hollow body and to the use of the hollow bodies.
Abstract:
The present invention relates to novel polymers ("polymer (P1)") obtainable by a process comprising the steps a) to c). According to step a), a polymer (P2) is provided. The polymer (P2) is obtainable by polymerization of a first dicarboxylic acid (A1) with a first diol (D1). Said polymer (P2) is hydrolyzed in step b) with a second diol (D2) in order to obtain a hydrolyzed polymer (P3). Afterwards, the hydrolyzed polymer (P3) is reacted with a second dicarboxylic acid (A2) which is different to the first dicarboxylic acid (A1), in order to obtain said polymer (P1). The present invention further relates to a process for obtaining such a polymer (P1). Furthermore, the present invention relates to the use of such a polymer (P1) within, for example, fabric and home care products. Another subject-matter of the present invention are fabric and home care products as such, containing such a polymer (P1).
Abstract:
The invention relates to a method for producing polymers containing S-vinylthio alkanols as monomers by way of radical polymerization, wherein the polymerization is carried out in aqueous solution with the proviso that no N-vinylpyrrolidone is used as a monomer for producing the polymers, and polymers produced according to such a method. Copolymers consisting of S-vinyl-2-thio-ethane-1-ol and one or several ethylenically unsaturated monomers selected from the group consisting of acrylic acid, itaconic acid, maleic acid, maleic acid anhydride, and vinylphosphonic acid mixtures, preferably aqueous compositions containing polymers or copolymers. Use of polymers, co-polymers, or of aqueous compositions as plasticizers for concrete, wetting agents, in cosmetics, as an adhesive component, in emulsion polymerization, for metal surface treatment, in coating applications, in paints, in washing agents, in rinsing agents, as encapsulation material, or as a sheathing material.
Abstract:
The invention relates to an aqueous preparation for passivating metal surfaces, containing itaconic acid homo- or copolymers and at least one amine- or amide-containing alcohol, to a method for passivating metal surfaces by treating the surface using the preparation according to the invention, to passivation layers and metal surfaces that can be obtained by means of the method according to the invention, and to the use of the preparation according to the invention in order to passivate a metal surface.
Abstract:
The invention relates to a hollow body with a capacity of at least 250 ml, the casing of which consists of polystyrene and is produced by injection stretch blow moulding. The invention also relates to the method of producing this hollow body and to the use of the hollow bodies.
Abstract:
The invention relates to a tube bundle heat exchanger (R) for removing dissolved substances from a polymer solution (P) by degassing, having a bundle of tubes (R) which are arranged parallel to one another and vertically and are fastened at both ends in each case in one tube plate (B), and having a degassing region below the lower tube plate (B), having an insert (1) in each tube (R), which insert (1) narrows the free throughflow cross section through the tube (R), and wherein the polymer solution (P) is supplied into the tubes (R) in a single-phase liquid state, and having a casing space around the tubes (R) which is traversed by a heat carrier, wherein the degassing takes place by means of a pressure drop between the inlet pressure of the polymer solution (P) in the tube bundle heat exchanger (R) and the degassing region, characterized in that each insert (1) is designed in such a way as to generate a pressure step between the inlet pressure and the pressure in the degassing region, by means of which pressure step a predefined low residual content of dissolved substances is obtained in the degassed polymer, and an additional heat input which is necessary for this purpose takes place via the heat carrier into the single-phase liquid polymer solution (P).