Abstract: The present invention relates to light guide bodies having improved luminous intensity and transparency, to a method for their production and to their use.

Abstract: The present invention relates to light guide bodies having improved luminous intensity and transparency, to a method for their production and to their use.

Abstract: Provided is an adhesive composition suitable for producing a laminate. The composition contains specified amounts of (a) polyisobutyl methacrylate, isobutyl methacrylate or a mixture thereof, (b) butyl acrylate, (c) polybutyl acrylate, (d) a (meth)acrylate compound and (e) a silicon compound. These components may be in polymerizable form, in polymerized form or in a combination of polymerizable form and polymerized form. The amounts of components (a) to (e) total 100 wt. % and the amount of (b) and (c) represents 30 to 90 wt. %, based on the sum total of components (a) to (e). The composition may optionally further contain from 0.1 to 6 wt. %, based on the total weight of the adhesive composition, of additives different from components (a) to (e) described above.

Abstract: The invention relates to a foamable bead polymer consisting of (meth)acrylonitrile, (meth)acrylic acid, copolymerizable latent blowing agents and optionally (meth)acrylic esters, the preparation thereof by suspension polymerization and the use thereof for producing foams. Such a bead polymer makes it possible, for example, to carry out in-mould foaming in a simple way and thus produce products having the shape of the desired workpiece directly. These workpieces are highly suitable as components in space, air, water and land vehicles and for other construction elements.

Abstract: The invention relates to a new adhesive composition and to sheets produced from it, for producing laminates, more particularly for bonding plastic with glass components, to a method for producing such laminates, and to the laminates produced accordingly.

Abstract: The invention relates to a method for coloring thermoplastic molding compounds, preferably a polymethyl(meth)acrylate molding compound, using novel aqueous colorant preparations. The invention further relates to a novel water-based colorant preparation.

Abstract: The present invention relates to light guide bodies having improved luminous intensity and transparency, to a method for their production and to their use.

Abstract: The present invention relates to light guide bodies having improved luminous intensity and transparency, to a method for their production and to their use.

Abstract: Composition for the production of mouldings having a matt and structured surface character, comprising a polymer matrix and crosslinked polymer particles, the polymer matrix comprising at least one acrylic polymer and the composition containing (i) first crosslinked polymer particles having a volume average of the particle size in the range from 30 ?m to 1500 ?m and (ii) second crosslinked polymer particles having a volume average of the particle size of less than 30 ?m, the difference between the refractive index of the first polymer particles and the refractive index of the polymer matrix, measured in each case at 25° C., being less than 0.015 as an absolute value and the difference between the refractive index of the second polymer particles and the refractive index of the polymer matrix, measured at 25° C., being greater than or equal to 0.015 as an absolute value.

Abstract: Process for preparation of bead polymers whose average particle size is in the range from 1 ?m to 40 ?m, by dispersing and polymerizing a polymerizable composition in an aqueous phase, where the dispersion stabilized by an aluminium compound is prepared at a shear rate ?103 s?1. A polymerizable composition is used here which, in each case based on its total weight, comprises a) more than 50.0% by weight of at least one compound of the formula (I), ?where the radicals 1R to 6R have definitions according to the Description, b) from 0.1% by weight to 10.0% by weight of at least one crosslinking agent and c) less than 49.9% by weight of at least one compound of the formula (II) ?where the radicals R and 7R to 9R have definitions according to the Description The bead polymers prepared according to the inventive process are particularly suitable for production of mouldings with light-scattering properties.

Abstract: (EN) The invention relates to a macroporous plastic bead material with a mean particle diameter of 10 to 1000 pm, radically polymerised from the following monomer types a) 5-40 wt. % vinylic polymerisable monomers with a water-solubility of at least 1% at 20° C. which are not vinylic polymerisable monomers with a quaternary amino group, b) 5-50 wt. % of vinylic polymerisable monomers with an additional functional group which can for covalent bonds on reaction with nucleophilic groups of ligands, c) 20-60 wt. % hydrophilic, cross-linking radically polymerisable monomers with two or more ethylenically-unsaturated polymerisable groups, characterised in that in addition d) 1 to 20 wt. % of a vinylic polymerisable monomer with a quaternary amino group are used for the polymer. The invention further relates to a method for production of the macroporous plastic bead material by inverse suspension polymerisation of monomer phase and uses thereof.

Abstract: The invention relates to a method for producing polymethacrylimides in two steps: 1) radical copolymerization of (meth)acrylamides (A, (Me,H)HC=CHCONHR2) and alkyl(meth)acrylic esters (B) and optionally further ethylenically unsaturated monomers in the presence of an aqueous solvent. The monomers (A) include, in addition to acrylamide and methacrylamide, (meth)acrylamides that are substituted on their nitrogen group (R2<>H). The monomers (B) are the (meth)acrylic esters of secondary or tertiary alcohols, preferably tert. butylmethacrylate. 2) Thermal or catalytic reaction of the copolymers produced in 1) to polymethacrylimide or for R2<>H to N-substituted polymethacrylimides while alkenes are separated.