Abstract: The invention is directed to an antimicrobial polymer that can preferably be processed thermoplastically, a method for the preparation of said antimicrobial polymer and its use in antimicrobial treatment. The invention is further directed to polymer blends containing antimicrobial polymers and the use of special monomers in the preparation of antimicrobial polymers that can be processed thermoplastically.

Abstract: The present invention relates to a radically curable chemical composition in the form of a resin for the production of materials with an intrinsically antimicrobial effect, as well as a process for the production of such resins and materials, as well as the use of an amino-functionalized styrene derivative as reactive diluents. The cross-linked plastic formed upon curing has an intrinsically antimicrobial effect without the use of additional biocides.

Abstract: The invention is directed to an antimicrobial polymer that can preferably be processed thermoplastically, a method for the preparation of said antimicrobial polymer and its use in antimicrobial treatment. The invention is further directed to polymer blends containing antimicrobial polymers and the use of special monomers in the preparation of antimicrobial polymers that can be processed thermoplastically.

Abstract: The present invention relates to a radically curable chemical composition in the form of a resin for the production of materials with an intrinsically antimicrobial effect, as well as a process for the production of such resins and materials, as well as the use of an amino-functionalized styrene derivative as reactive diluents. The cross-linked plastic formed upon curing has an intrinsically antimicrobial effect without the use of additional biocides.

Abstract: A standard calibration set having at least three calibration standards. Each standard is a molded article made of a thermoplastic polymer which contains the elements Cd, Cr, Pb, Hg and Br, with the Cr:Pb:Hg:Br:Cd ratio being different in each of the three calibration standards. Further disclosed is a method for manufacturing the calibration standards and their use in X-ray fluorescence analysis.

Abstract: The present invention relates to a standard calibration set comprising at least three calibration standards that consist of a molded article made of a thermoplastic polymer which contains the elements Cd, Cr, Pb, Hg and Br, with the Cr:Pb:Hg:Br:Cd ratio being different in each of the three calibration standards, and to a method for manufacturing said calibration standards and their use in X-ray fluorescence analysis.

Abstract: The invention relates to a process for preparing prepolymers containing isocyanate groups by reacting a) diisocyanates with b) compounds having at least two hydrogen atoms which are reactive toward isocyanate groups in the presence of c) catalysts, and subsequently separating off the excess monomeric diisocyanates, wherein the diisocyanates a) used are unsymmetrical diisocyanates and the catalysts c) used are organometallic catalysts and these organometallic catalysts are removed, blocked or deactivated before the monomeric diisocyanates are separated off.

Abstract: Polyurethane foams having improved long-term stability are prepared by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms reactive with isocyanate groups, in the presence of inhibitors, by a process in which the inhibitors are encapsulated in a substance which is inert under the conditions of the polyurethane preparation, in particular wax.

Abstract: Polyurethane foams having a density of less than 200 g/l are prepared by reacting a) polyisocyanates with b) compounds having at least two hydrogen atoms reactive with isocyanate groups, the polyisocyanates a) being aromatic di- or polyisocyanates and the compounds b) having at least two hydrogen atoms reactive with isocyanate groups containing at least one acrylate polyol.

Abstract: Catalysts contain, as structural units, at least one tertiary amino group and at least one group which, after its decomposition, is capable of complexing or protonating the tertiary amino group.

Abstract: The invention relates to polyurethane foams comprising (i) ethylenimine, polyethylenimine, polyvinylamine, polyvinylamine copolymers, carboxymethylated polyethylenimines, phosphonomethylated polyethylenimines, quarternized polyethylenimines and/or dithiocarbamatized polyethylenimines or (ii) alkali hydroxides and/or alkaline earth metal hydroxides or a mixture consisting of both (i) and (ii).

Abstract: The polyisocyanate polyaddition products comprise hydrophobic compounds plus at least one further compound selected from the group consisting of: (i) organic, cyclic compounds having a molecular weight of from 200 to 3000 g/mol, (ii) salts of metals of transition groups I, II and/or VIII, (iii) organic and/or inorganic acid anhydrides, (iv) cyclic sulfonic esters and/or sulfones, (v) lactones, lactams and/or cyclic esters and/or (vi) &agr;,&bgr;-unsaturated carboxylic acids, &agr;,&bgr;-unsaturated carboxylic acid derivatives, &agr;,&bgr;-unsaturated ketones and/or &agr;,&bgr;-unsaturated aldehydes.

Abstract: The invention relates to polyurethane foams comprising

Abstract: The present invention relates to a mixture that contains (i) at least one isocyanate and (ii) at least one organic and/or inorganic acid anhydride.

Abstract: The polyisocyanate polyaddition products comprise hydrophobic compounds plus at least one further compound selected from the group consisting of: (i) organic, cyclic compounds having a molecular weight of from 200 to 3000 g/mol, (ii) salts of metals of transition groups I, II and/or VIII, (iii) organic and/or inorganic acid anhydrides, (iv) cyclic sulfonic esters and/or sulfones, (v) lactones, lactams and/or cyclic esters and/or (vi) &agr;,&bgr;-unsaturated carboxylic acids, &agr;,&bgr;-unsaturated carboxylic acid derivatives, &agr;,&bgr;-unsaturated ketones and/or &agr;,&bgr;-unsaturated aldehydes.

Abstract: Catalysts contain, as structural units, at least one tertiary amino group and at least one group which, after its decomposition, is capable of complexing or protonating the tertiary amino group.

Abstract: The invention relates to polyurethane foamed materials containing: (i) ethylene imine, polyethylene imine, polyvinylamine, polyvinylamine copolymers, carboxymethylated polyethylene imines, phosphonomethylated polyethylene imines, quarternized polyethylene imines and/or dithiocarbamatized polyethylene imines or; (ii) alkali hydroxides and/or alkaline-earth hydroxides or; a mixture consisting of both (i) and (ii).

Abstract: The polyisocyanate polyaddition products comprise hydrophobic compounds plus at least one further compound selected from the group consisting of: (i) organic, cyclic compounds having a molecular weight of from 200 to 3000 g/mol, (ii) salts of metals of transition groups I, II and/or VIII, (iii) organic and/or inorganic acid anhydrides, (iv) cyclic sulfonic esters and/or sulfones, (v) lactones, lactams and/or cyclic esters and/or (vi) &agr;,&bgr;-unsaturated carboxylic acids, &agr;,&bgr;-unsaturated carboxylic acid derivatives, &agr;,&bgr;-unsaturated ketones and/or &agr;,&bgr;-unsaturated aldehydes.

Abstract: The polyisocyanate polyaddition products comprise hydrophobic compounds plus at least one further compound selected from the group consisting of: (i) organic, cyclic compounds having a molecular weight of from 200 to 3000 g/mol, (ii) salts of metals of transition groups I, II and/or VIII, (iii) organic and/or inorganic acid anhydrides, (iv) cyclic sulfonic esters and/or sulfones, (v) lactones, lactams and/or cyclic esters and/or (vi) &agr;,&bgr;-unsaturated carboxylic acids, &agr;,&bgr;-unsaturated carboxylic acid derivatives, &agr;,&bgr;-unsaturated ketones and/or &agr;,&bgr;-unsaturated aldehydes.

Abstract: In a process for preparing polyisocyanate polyaddition products by reacting isocyanates with compounds which are reactive toward isocyanates, in the presence or absence of blowing agents, catalysts, auxiliaries and/or additives, the reaction is carried out in the presence of (i) particles which have a size of <200 &mgr;m and a melting point in a range from 50 to 300° C., or in the presence of thermoset particles (ii) or in the presence of particles (i) and (ii).