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 a mixture (M) which can be used as curing agent and as adhesion promoter and which comprises at least two components (M1) and (M2), which are different from one another and have in each case independently of one another free and/or blocked isocyanate groups, and which optionally comprises a further component (M3) different from (M1) and (M2); component (M1) comprises at least one aliphatic polyisocyanate, and component (M2) comprises at least one aliphatic polyisocyanate having polyether units, wherein the relative weight ratio of (M1) and (M2) in (M) to one another is in a range from 25:1 to 3:1, based in each case on the solids content of (M1) and (M2), and at least one of the components (M1), (M2), and optionally (M3) present in (M) has hydrolyzable silane groups, to a use of (M) as curing agent and adhesion promoter in a coating composition, to such a coating composition, and to methods for at least partly coating a substrate with a surfacer coat and for at least partly coating a substrate with a multicoat paint system.

The invention relates to a method for producing polyurethanes containing silane groups, to products that can be obtained by means of said method, and to the use of said products for producing cross-linkable binders, in particular for coatings, sealant raw materials, or glue raw materials.

The invention relates to a polyurea compound, which can be produced by reacting a polyisocyanate with a dialkoxy amino silane according to general formula R.sup.1(R.sup.1O).sub.2Si(CH.sub.2).sub.mNHR.sup.2 and optionally also with a trialkoxy amino silane according to general formula (R.sup.1O).sub.3Si(CH.sub.2).sub.nNHR.sup.2 wherein the groups R.sup.1 are selected independently from one another from C.sub.1-C.sub.20-alkyl or C.sub.6-C.sub.20-aryl, n and m are each whole numbers between 1 and 4, the groups R.sup.2 are selected independently from one another from H, C.sub.1-C.sub.2O-alkyl, C3-C12-cycloalkyl, and CHR.sup.3CH.sub.2COOR.sup.4, the groups R.sup.3 are selected independently from one another from H, C.sub.1-C.sub.20-alkyl and COOR.sup.4, and the groups R.sup.4 represent C.sub.1-C.sub.20-alkyl independently from one another. The invention also relates to the use of the compound as a binder for producing coatings.

The present invention relates to curable compositions, in particular, thiol-ene-curing compositions, a method of coating using said curable compositions, cured compositions obtained by curing said curable compositions, cured articles, comprising said cured compositions, a certain compound comprising olefinically unsaturated functional groups and a silyl functional group for use in said curable compositions and a method of manufacturing the curable compositions.

The invention relates to a polyurea compound that can be produced by reacting a polyisocyanate based on isophorone diisocyanate, which has isocyanurate and allophanate groups, with an amino silane according to general formula (I): R.sup.1.sub.a(R.sup.1O).sub.(3-a)Si(CH.sub.2).sub.nNHCHR.sup.2CH.sub.2COOR.sup.3 (I), wherein the groups R.sup.1 are selected independently from one another from C.sub.1-C.sub.20-alkyl or C.sub.6-C.sub.20-aryl, a is a whole number between 0 and 2, n is a whole number between 1 and 4, R.sup.2 is selected from H, C.sub.1-C.sub.20-alkyl, C.sub.6-C.sub.12-aryl and COOR.sup.3, and R.sup.3 is a respective C.sub.1-C.sub.20-alkyl. The invention also relates to the use of the compound as a binder for producing coatings.

Coating compositions and coatings with improved soiling resistance and (self-)cleaning properties are disclosed. The coating compositions and coatings may be nonaqueous coating compositions and may include at least one hydroxyl group-containing compound, at least one isocyanate group-containing compound having free or blocked isocyanate and silane groups, at least one catalyst for the crosslinking of the silane groups, and at least one alkoxysilyl-functional siloxane.

A method of preparing polyurethane hot melt adhesive with high temperature resistance generally includes the following steps: (1) adding isocyanate with a silane modifier in a reactor in an inert atmosphere, heating and stirring, then adding chemical dehydrant into the reactor and mixing evenly; (2) adding dehydrated diluent and tackifier resin to the reactor while maintaining the inert atmosphere and heating, adding dehydrated polyester polyol and polyether polyol, stirring, and allowing to react at constant temperature for a predetermined time period; (3) adding dehydrated polyether amine, stirring, and heating; and (4) adding a catalyst, vacuumizing, discharging materials and packaging the materials in an airtight container. The hot melt adhesive made according to the new method has a variety of improved physical and mechanical properties, including improved high temperature resistance, cold and heat shock resistance, drop resistance toughness, high adhesive strength, salt spray resistance and moisture and heat aging resistance.

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 nitrogencontaining 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.

A method of preparing polyurethane hot melt adhesive with high temperature resistance generally includes the following steps: (1) adding isocyanate with a silane modifier in a reactor in an inert atmosphere, heating and stirring, then adding chemical dehydrant into the reactor and mixing evenly; (2) adding dehydrated diluent and tackifier resin to the reactor while maintaining the inert atmosphere and heating, adding dehydrated polyester polyol and polyether polyol, stirring, and allowing to react at constant temperature for a predetermined time period; (3) adding dehydrated polyether amine, stirring, and heating; and (4) adding a catalyst, vacuumizing, discharging materials and packaging the materials in an airtight container. The hot melt adhesive made according to the new method has a variety of improved physical and mechanical properties, including improved high temperature resistance, cold and heat shock resistance, drop resistance toughness, high adhesive strength, salt spray resistance and moisture and heat aging resistance.