Abstract:
PROBLEM TO BE SOLVED: To provide a composite material and a method for producing the same.SOLUTION: A composite material comprises: (A) a natural fiber; (B) at least one kind of thermoplastic polymer; and (C) at least one kind of random copolymer having a molar mass Mof 20,000 g/mol or less at maximum and obtained by copolymerizing (a) ethylene, (b) at least one kind of reactive comonomer selected from (b1) an ethylenically unsaturated C-Cmonocarboxylic acid and (b3) an epoxyester of ethylenically unsaturated C-Cmonocarboxylic acid, and, if necessary, (c) at least one kind of other comonomer.
Abstract:
The invention relates to a curable composition comprising the following components: (A) at least one isocyanate, (B) at least one binder, and (C) at least one polyhedral oligomeric silsesquioxane, with the number of cages z per molecule being 2 or 3 and the number of tin atoms per molecule being at least one. Furthermore, the invention refers to a kit of parts comprising as components A), B), and C); to the use of the polyhedral oligomeric silsesquioxanes in coatings, lacquers, paintings, films and polymer compositions; to coatings obtainable by curing of these compositions; and to the use of polyhedral oligomeric silsesquioxanes containing at least one metal atom, in particular polyhedral oligomeric stannasilsesquioxane to increase the scratch resistance of coatings.
Abstract:
The invention relates to a method of preparing a composition comprising (a) reacting a binder component (B) comprising at least one alkoxysilane (B2), and a polymer dispersion (PD), thus obtaining a prepolymer and subsequently (b) mixing or hydrolyzing and polycondensing said prepolymer in the presence of water and at least one antimicrobial agent (Z) comprising at least one antimicrobial active (Z1) and optionally a particulate carrier substance (Z2), wherein the at least one antimicrobial agent (Z) is unreactive during step (b).
Abstract:
The present invention concerns a method of making a porous material comprising the following steps in the order a-b-c-d: (a) reacting at least one organosilane (A) with water in the presence of a solvent (C) to form a polymeric material, (b) subjecting said polymeric material to a first heat treatment, (c) bringing said polymeric material into contact with at least one dehydroxylation agent (D), (d) subjecting said polymeric material to electromagnetic radiation and/or to a further heat treatment. The present invention furthermore concerns the porous material obtainable by the inventive method, semiconductor devices and electronic components comprising said porous material, and the use of said material for electrical insulation and in microelectronic devices, membranes, displays and sensors.
Abstract:
The invention relates to composite materials, comprising (A) natural fibres, (B) at least one thermoplastic polymer, (C) at least one statistical copolymer with a molecular weight M n up to a maximum of 20,000 g/mol, obtained by copolymerisation of (a) ethylene, (b) at least one reactive comonomer, selected from (b1) ethylenically-unsaturated C 3 - C 10 monocarboxylic acids, (b2) ethylenically-unsaturated C 4 -C 10 dicarboxylic acids or the anhydrides thereof, (b3) epoxy esters of ethylenically-unsaturated C 3 -C 10 monocarboxylic acids, (b4) comonomers of general formula (I) in which the variables are as defined below: R 1 = H, straight- and branched-chain C 1 -C 10 alkyl, R 2 = H, straight- and branched-chain C 1 -C 10 alkyl, R 3 independently = H, straight- and branched-chain C 1 -C 10 alkyl and C 3 -C 12 cycloalkyl, wherein two R 3 groups can be connected together to form a 3- to 10-membered ring, X = O, S or N-R 4 , R 4 = straight- or branched-chain C 1 -C 10 alkyl, A 1 = a divalent group from C 1 -C 10 alkylene, C 4 -C 10 cycyloalkylene and phenylene and (c) optionally at least one further comonomer.
Abstract:
Copolymers comprising as comonomers in copolymerized form: (a) ethylene, (b) one or more compounds of the general formula I (c) if appropriate, one or more alkenylphosphonic diesters, (d) if appropriate, one or more other free-radically copolymerizable comonomers, whose variables are defined as follows: R1 is selected from hydrogen and unbranched and branched C1-C10-alkyl, R2 is selected from hydrogen and unbranched and branched C1-C10-alkyl, R3 is selected from hydrogen, phenyl, benzyl, and unbranched and branched C1-C10-alkyl and unbranched and branched hydroxy-C2-C10-alkyl, as free acid or partially or completely neutralized with alkali metal, alkaline earth metal, ammonia or organic amine.
Abstract:
A method of coating surfaces of plastic or metal, which comprises treating the plastic or metal surface in question with an aqueous dispersion comprising (A) at least one ethylene copolymer having a molecular weight Mn in the range from 2000 to 20 000 g/mol, selected from ethylene copolymers comprising as comonomers in copolymerized form (a) 15.5% to 19.9% by weight of at least one ethylenically unsaturated C3-C10 carboxylic acid and (b) 80.1% to 84.5% by weight of ethylene, (B) at least one base, in one step and subsequently providing in at least one further step the metal or plastic surface in question with at least one further coat.