The invention relates to coating agents that contain thioallophanates, containing silane groups, as cross-linking agents and to the use of said coating agents to produce coatings, in particular clear coats for automobile painting.

The present invention discloses silylated polyurethanes obtainable by reacting at least one polyols, at least one polyisocyanates, at least one silicon-containing heterocycle of the general formula (I):

##STR00001## wherein R.sup.1 is hydrogen; R.sup.2 and R.sup.3 are same or different and are, independently from one another, selected from a linear or branched, substituted or unsubstituted C.sub.1-C.sub.20 alkyl or C.sub.6-C.sub.18 aryl residue which may be interrupted by at least one heteroatom; R.sup.4 is selected from a linear or branched, substituted or unsubstituted C.sub.1-C.sub.20 alkylene residue which may be interrupted by at least one heteroatom; R.sup.5 and R.sup.6 are same or different and are, independently from one another, selected from the group consisting of hydrogen, a linear or branched, substituted or unsubstituted C.sub.1-C.sub.20 alkyl or C.sub.6-C.sub.18 aryl which may be interrupted by at least one heteroatom, and a C.sub.4-C.sub.8 cycloalkyl, or R.sup.5 and R.sup.6 may form a ring, preferably a 4- to 8-membered alkyl ring; and n is 0, 1 or 2,
their preparation methods, curable compositions comprising the silylated polyurethanes, and their use as adhesive, sealant, spray foam and/or coating.

The present invention relates to non-aqueous coating agent compositions, containing at least one polyol (A), at least one silane-modified compound (B) of formula (I), optionally one or more silane-free aliphatic or cycloaliphatic polyisocyanates (C) having free or blocked isocyanate groups, and at least one catalyst (D) for the cross-linking of the silane groups. Furthermore, the non-aqueous coating agent compositions according to the invention can contain one or more surface additives (E) and one or more non-aqueous solvents (F).

The invention relates to a method for potting hollow fiber membranes in potting compounds of increased temperature resistance, wherein an isocyanate component with inorganic particles and a polyol component are processed into a potting compound and the hollow fiber membranes are tightly encased by the potting compound in at least one potting zone by the hardening of said potting compound.

The invention relates to aqueous two-component coating compositions based on preferably hydroxy-functional and/or amino-functional aqueous polymer dispersions and thioallophanates containing silane groups as crosslinking agents, to a method for producing them and to the use of these coating compositions for producing coatings.

A nonaqueous coating material composition and a coating produced from the coating material composition are provided. The coating material composition contains at least one polyhydroxyl group-containing component, at least one polyisocyanate group-containing component, at least one catalyst, and at least one urethane additive (PF) which has specific groups. The urethane additive (PF) is prepared by reacting 0.5 to 20 mol % of the isocyanate groups originally present in a polyisocyanate (PI) with a component (Ia) and 10 to 99.5 mol % of the isocyanate groups originally present in the polyisocyanate (PI) with a component (IIa). The component (Ia) contains at least one perfluoroalkyl group of a specific formula and one group reactive toward the isocyanate groups. The component (IIa) contains at least one silane group of a specific formula and one group reactive toward the isocyanate groups.

A resin composition for primary coating of an optical fiber contains a photopolymerizable compound containing a urethane (meth)acrylate containing a reaction product of a polypropylene polyol having a number average molecular weight of 8000 or more and 20000 or less and an isocyanate group-containing (meth)acrylate and a photopolymerization initiator.

A novel primer composition contains aldimine and/or epoxy resins, a process of making such primer to be used in glass bonding adhesive kit.

Disclosed herein is a coating material compositions containing (A) a polyhydroxyl group-containing component, (B) a component (B) having on average at least one isocyanate group and having on average at least one of: at least one hydrolyzable silane group of the formula (I): NR(XSiRx(OR)3-x), and at least one hydrolyzable silane group of the formula (II): N(XSiRx(OR)3-x)n(XSiRy(OR)3-y)m, (D) a phosphorus and nitrogen-containing catalyst, and a catalyst (Z), wherein: the catalyst (Z) is selected from zinc and bismuth carboxylates, of aluminum, zirconium, titanium and/or boron chelates and/or of inorganic, tin-containing catalysts, and mixtures thereof; and the coating material composition comprises at least one reaction accelerator (R) which is selected from the group of inorganic acids and/or of organic acids and/or of partial esters of the inorganic acids and/or of partial esters of the organic acids. Processes for producing multicoat paint systems, and coatings obtained from the coating material compositions are also disclosed.

The invention relates to modified polyisocyanates, obtained by reacting at least one polyisocyanate (A) based on 1,5-diisocyanatopentane with at least one silane compound (B) which is reactive with respect to isocyanate groups. The invention also relates to a method for producing the modified polyisocyanates and to the use thereof as starting components in the production of polyurethane plastics, in particular as crosslinker components in polyurethane paints and coatings.