Abstract: A process for preparing trimers and/or oligomers of diisocyanates is disclosed along with a composition of trimers and/or oligomers formed from diisocyanates and monomeric diisocyanates obtainable by reaction of I. 5-94.999% by weight of A) at least one diisocyanate having a boiling point of less than 250° C. (at standard pressure) and/or B) at least one diisocyanate having a boiling point of 250-350° C. (at standard pressure), in the presence of II. 94.999-5% by weight of C) at least one diisocyanate having a boiling point above 350° C. (at standard pressure), III. in the presence of at least one trimerization catalyst in amounts of 0.001% to 5% by weight, and the amounts of I.-III. add up to 100% by weight.

Abstract: A process for preparing trimers and/or oligomers of diisocyanates is disclosed along with a composition of trimers and/or oligomers formed from diisocyanates and monomeric diisocyanates obtainable by reaction of I. 5-94.999% by weight of A) at least one diisocyanate having a boiling point of less than 250° C. (at standard pressure) and/or B) at least one diisocyanate having a boiling point of 250-350° C. (at standard pressure), in the presence of II. 94.999-5% by weight of C) at least one diisocyanate having a boiling point above 350° C. (at standard pressure), III. in the presence of at least one trimerization catalyst in amounts of 0.001% to 5% by weight, and the amounts of add up to 100% by weight.

Abstract: The invention relates to high-reactivity polyurethane compositions containing uretdione groups and intended for use in the plastics sector.

Abstract: The present invention relates to epoxy resin formulations having a specific sparingly soluble catalyst mixture for enhancing reactivity.

Abstract: Low-temperature-curable polyurethane compositions with uretdione groups, containing polymers based on polyols that carry secondary OH groups.

Abstract: The invention relates to specific, hydroxyl-terminated polyurethane compounds containing uretdione groups and intended for use in the plastics sector.

Abstract: The invention relates to a one-stage or multistage process for preparing mono-, di- and/or polyamines from compounds having carbodiimide groups and optionally also other groups of isocyanate chemistry by hydrolysis with water.

Abstract: Low-odor, storage-stable monomer-containing polyisocyanurate is prepared from isophorone diisocyanate by conducting a partial trimerization for 3 minutes to 3 hours in the presence of 0.05-2% by weight of a catalyst, based on the weight of the diisocyanate, the catalyst having the formula [R—NX3]m⊕mY⊖ wherein Y⊖ is a carboxylic acid anion of 4-8 carbons, R is a &bgr;-hydroxyalkyl group of 2-6 carbons, X is an alkylene group of 2-3 carbons and m is a number from 1.0 to 2.0. The three radicals X form a ring with the quaternary nitrogen by way of a common nitrogen atom, which may be partly &bgr;-hydroxyalkylated, said ring optionally having an OH group positioned &agr;, &bgr; or &ggr; to the nitrogen. The reaction proceeds at a temperature of 0-160° C.

Abstract: A process for producing surface-sealed hollow glass containers, the hollow glass containers are, in the production process in the region of the exit from the annealing lehr which is located downstream of a machine for producing hollow glass containers, coated by means of a water-based cold end coating composition comprising at least the following components: I. a trialkoxysilane, a dialkoxysilane and/or a tetralkoxysilane or their hydrolysis and/or condensation products and also II. a water-soluble or water-dispersible mixture of a polyol and a crosslinker, wherein the applied layer of the cold end coating composition is subsequently subjected to a crosslinking step. The hollow glass containers produced in this way have an improved strength.

Abstract: A process for producing surface-sealed hollow glass containers, wherein as part of the production process the hollow glass containers are coated with a water-based cold end coating composition in the region of the exit from the annealing lehr, which is arranged following a machine for producing hollow glass containers, where the cold end coating composition comprises the following components: I. a water-based organopolysiloxane-containing composition prepared from alkoxysilanes which carry a functional group and alkoxysilanes which are selected from trialkoxysilanes, dialkoxysilanes and tetraalkoxysilanes, and II. a silicon-free component selected from a wax, a partial fatty acid ester, a fatty acid and/or a surfactant. The hollow glass containers produced in this way feature an enhanced long-term service strength.

Abstract: A process for producing surface-sealed hollow glass containers, wherein as part of the production process the hollow glass containers are coated in the region of the exit from the annealing lehr, which is arranged following a machine for producing hollow glass containers, with a water-based cold end coating composition comprising a silane, where atop this first coat there is subsequently applied a second coat of a water-based cold end coating composition that comprises the following components:I. a water-based organopolysiloxane-containing composition prepared from alkoxysilanes which carry a functional group and alkoxysilanes which are selected from trialkoxysilanes, dialkoxysilanes and tetraalkoxysilanes, andII. a silicon-free component selected from a wax, a partial fatty acid ester, a fatty acid and/or a surfactant.The hollow glass containers produced in this way feature an enhanced long-term service strength.