Abstract:
Process for the production of polymeric networks which comprise active ingredients and which are composed of oligomers having (meth)acrylate groups, and optionally of further monomers and active ingredients, the polymeric networks obtainable by the process, and their use for various purposes, in particular for the protection of materials or for the protection of plants.
Abstract:
A method for producing an expandable polymer granulated material comprises the steps a) providing a polymer component (P), consisting of PS) 90-100 wt% (relative to P) of a styrene polymer component with a glass-transition temperature ≥ 130°C, which is formed from PS1) 30-100 wt% (relative to P) of one or more styrene polymers, containing PS11) 60-85 wt% (relative to PS1) copolymerized styrene (PS11) or alpha-methylstyrene (PS12) or a copolymerized mixture of alpha-methylstyrene and styrene (PS13), PS12) 15-40 wt% (relative to PS1) of at least one copolymerized monomer from the group consisting of maleic anhydride and maleimides, and PS2) 0-70 wt% (relative to P) of one or more styrene polymers different from PS1, containing PS21) 60-82 wt% (relative to PS2) copolymerized styrene (PS11) or alpha-methylstyrene (PS12) or a copolymerized mixture of styrene and alpha-methylstyrene (PS13), and PS22) 18-40 wt% (relative to PS2) copolymerized acrylonitrile, and PT) 0-10 wt% (relative to P) of one or more thermoplastic polymers from the group consisting of aromatic polyethers; polyolefins; polyacrylates; polycarbonates (PC); polyesters; polyamides; polyethersulfones (PES); polyetherketones (PEK) and polyether sulfides (PES), (b) heating the polymer component (P) to form a polymer melt, (c) introducing 1-5 wt% (relative to P) of a propellant component (T) into the polymer melt to form a foamable melt, (d) homogenizing the mixture, (e) optionally introducing additives into the polymer component (P) in at least one of steps a), b), c) and/or d), (f) extruding the propellant-containing polymer melt through a die plate, (g) granulating the propellant-containing melt in a liquid-filled chamber at a pressure of 1.5-15 bar to form a granulated material. The expandable granulated material is suitable for producing molded foam articles for applications as insulation material and as structural foam elements for lightweight construction and composite applications.
Abstract:
The present invention relates to the use of a polymer dispersion (PD) containing at least one polymer (P) obtained through radical emulsion polymerization of at least one ethylenically unsaturated monomer (M1) and at least one monomer (M2) different therefrom selected from among the esters of phosphonic acid or phosphoric acid, alternatively with alkoxylated hydroxyalkyl (meth)actylates and at least one emulsifier (E) selected from the phosphoric acid esters, alternatively with alkoxylated C 8 -C 30 alcohols and salts thereof, in coating agents for improving the abrasion resistance of coatings produced therefrom and/or for improving the polishing resistance of the coatings produced therefrom and/or for improving the stain resistance of the coatings produced therefrom and/or for improving the pigment distribution in the coatings produced therefrom and/or for reducing the emissions of volatile organic compounds from the coatings produced therefrom, polymer dispersions used according to the invention, and coating agents containing the polymer dispersions according to the invention.
Abstract:
The present invention relates to a method for producing a molded body from a blowing-agent containing foam material, which comprises at least one fiber (F), said at least one fiber (F) being partly introduced into the blowing-agent containing foam material. The two ends of the respective fiber (F) which are not surrounded by the foam material thus protrude on one side of the corresponding molded body. The invention further relates to a molded body as such. The invention also relates to a panel which comprises at least one such molded body produced according to the method of the invention, and at least one additional layer (S1). The invention further relates to the production of the panels according to the invention and to the use thereof, for example as rotor blades in wind turbines.
Abstract:
The present invention relates to polymer dispersion-based binder compositions comprising boric acid or salts of boric acid as cross-linking agents, to a method for the production thereof and to use thereof. The aqueous binder composition comprises: a) a water-insoluble polymer (P) in the form of dispersed polymer particles with a glass transition temperature in the range of -50°C to 50°C, obtained through radical polymerization of ethylenically unsaturated monomers M, wherein the monomers M contain: 80 to 99.9 wt %, relative to the total amount of monomers M, of at least one slightly soluble neutral monoethylenically unsaturated monomer M1; and 0.1 to 20 wt %, relative to the total amount of monomers M, of at least one monoethylenically unsaturated monomer M2 that contains at least one carboxyl group and/or at least one carboxylic acid amide group (CONH 2 ); and b) boric acid and/or at least one salt of boric acid.
Abstract:
The invention relates to producing polymer dispersions with improved freeze/thaw stability by adding a highly-branched polymer thereto and the use of highly-branched polymers for the above.