Basf Coatings Gmbh

Basf Coatings Ag

Manuela Niemeier

Andreas Poppe

Elke Westhoff

Wilfried Stübbe

Simone Hesener

Matthijs Groenewolt

Audree Andersen

Cathrin Corten

Nicole Freitag

Günter Klein

Stefanie Boshe-Plois

Heinz-Peter Rink

Wolfgang Bremser

Fatmir Raka

Sabine Holtschulte

Britta Schnieders

Alexandra Steffens

Guenter Klein

Björn Feldmann

Christian Weiher

Oliver Hilge

Winfried Stübbe

Andreas Feigl

Frederik Foelling

Wilfried Stuebbe

Dunja Köppen

Jens-Dieter Fischer

Peter Hommmes

Jochen Henkelmann

Lucien Thiel

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.

Adhesion promoter for coating compositions suitable for producing surfacer coats

The present invention relates to a solventborne clearcoat material which comprises at least one additive preparable by reacting at least one alpha,omega-hydroxy-functionalized oligoester which has an OH number of 30 to 160 mg KOH/g, a theoretical carbon-carbon double bond content of 1 to 2.5 mmol/g, a number-average molecular weight of 1000 to 3000 g/mol, and a weight-average molecular weight of 2800 to 10 000 g/mol, and at least one alkoxysilane which possesses an OH-reactive functional group, the sum of the weight percentage fractions of all additives of the invention being 0.5 to 10 wt %, based on the total amount of the solventborne clearcoat material. The present invention further relates to a process for producing multicoat paint systems, and to multicoat paint systems producible by means of said process. The invention further relates to the use of the above-identified additive in solventborne clearcoat materials for the purpose of improving adhesion.

Adhesion promoter for solventborne clearcoat materials

The present invention relates to a solventborne primer surfacer which comprises at least one additive preparable by reacting at least one alpha,omega-hydroxy-functionalized oligoester which possesses an OH number of 30 to 160 mg KOH/g, a theoretical carbon-carbon double bond content of 1 to 2.5 mmol/g, a number-average molecular weight of 1000 to 3000 g/mol, and a weight-average molecular weight of 2800 to 10 000 g/mol, and at least one alkoxysilane which possesses an OH-reactive functional group, the sum of the weight percentage fractions of all additives of the invention being 0.5 to 10 wt %, based on the total amount of the solventborne primer surfacer. The present invention further relates to a process for producing multicoat paint systems, and to multicoat paint systems producible by means of said process. The invention further relates to the use of the additive identified above in solventborne primer surfacers for improving adhesion.

Adhesion promoter for solventborne primer surfacers

Disclosed are aqueous coating compositions comprising at least one hydroxyl-containing compound (A), at least one compound (B) having isocyanate groups and also having hydrolyzable silane groups, and at least one catalyst (C) wherein the compound (B) has 10 mol % to less than 90 mol % of at least one structural unit (I)&#x2014;N(X&#x2014;SiR&#x2033;(OR')3-)(X&#x2032;&#x2014;SiR&#x2033;(OR&#x2032;)3-)&#x2003;&#x2003;(I)Where R&#x2032;=hydrogen, alkyl or cycloalkyl, X, X&#x2032;=linear and/or branched alkylene or cycloalkylene radical having 1 to 20 carbon atoms, R&#x2033;=alkyl, cycloalkyl, aryl or aralkyl, n=0 to 2, m=0 to 2, m+n=2, and x, y=0 to 2, and more than 10 to 90 mol % of at least one structural unit (II) &#x2014;Z&#x2014;(X&#x2014;SiR&#x2033;x(OR&#x2032;)3-x) (II), where Z=&#x2014;NH&#x2014;, &#x2014;NR&#x2014;, &#x2014;O&#x2014; or &#x2014;S&#x2014;, where R=alkyl, cycloalkyl, aryl or aralkyl, and x, X, R&#x2032; and R&#x2033; have the definition indicated for formula (I).

Aqueous polyurethane coating material and coatings produced therefrom and having high scratch resistance and good chemicals resistance

Coating compositions comprising at least one hydroxyl-containing compound (A), at least one isocyanato-containing compound (B) and at least one urea-group-containing compound (H) different from (B), compound (H) comprising at least one structural unit selected from the group consisting of a structural unit (I) a structural unit (II) a structural unit (III)&#x2014;NR'&#x2033;&#x2014;C(O)&#x2014;N(X&#x2014;SiR&#x2033;(OR&#x2032;))(X&#x2032;&#x2014;SiR&#x2033;(OR&#x2032;)), and combinations of two or more of the foregoing, compound (H) being obtained by reacting an isocyanato-containing compound (H) with amino-containing compounds, wherein in compound (H) more than 90 mol % of the isocyanate groups originally present in (H) have undergone reaction to form the structural units (I), (II), (III), or combinations thereof, where R&#x2032;, R&#x2032;&#x2033;=hydrogen, alkyl, cycloalkyl, aryl or aralkyl; R, R&#x2033;=alkyl, cycloalkyl, aryl or aralkyl; X, X&#x2032;=linear and/or branched alkyl or cycloalkyl radical; x, y, n, m=0 to 2; and m+n=2.

Coating agents having improved runoff tendency

Disclosed are coating compositions comprising at least one hydroxyl-containing compound (A) and at least one isocyanato-containing compound (B), wherein one or more of the constituents of the coating composition comprise between 2.5 and 97.5 mol %, based on the entirety of structural units (I) and (II), of at least one structural unit of the formula (I)&#x2014;N(X&#x2014;SiR&#x2033;(OR'))(X&#x2032;&#x2014;SiR&#x2033;(OR&#x2032;))&#x2003;&#x2003;(I)and between 2.5 and 97.5 mol %, based on the entirety of structural units (I) and (II), of at least one structural unit of the formula (II)&#x2014;Z&#x2014;(X&#x2014;SiR&#x2033;(OR&#x2032;))&#x2003;&#x2003;(II).

Coating agents having high scratch resistance and weathering stability

The present invention relates to a coating composition comprising

Coating agent having high scratch resistance and high weathering resistance

The invention relates to the use of partly silanized compounds based on polyisocyanate as crosslinking agents with heightened refractive index in curable coating compositions, more particularly in clearcoat materials for automotive finishing. The invention likewise relates to a coating composition which comprises these compounds as crosslinking agents, and to the use of the coating composition to produce a coating.

Use of partially silanized polyisocyanate-based compounds as crosslinking-agents in coating compositions, and coating compositions comprising the compounds

Disclosed are coating compositions comprising (a) at least one hydroxyl-containing compound (A), (b) at least one compound (B) having isocyanate groups, and (c) at least one catalyst (D) for the crosslinking of silane groups, said catalyst (D) comprising phosphorus. It is an aspect of the disclosed coating compositions that (i) one or more constituents of the coating composition contain hydrolyzable silane groups and (ii) the coating composition can be finally cured to a coating which has statistically distributed regions of an Si&#x2014;O&#x2014;Si network.

Hydrolysates and/or condensates of epoxy- and silane-functional oligomers and polymers, prepared by hydrolyzing and/or condensing at least one oligomer and/or polymer (A) containing at least one epoxide group (a1) and at least one hydrolyzable silane group (a2); and also (meth)acrylate copolymers (A) containing lateral and/or terminal epoxide groups (a1) and lateral and/or terminal hydrolyzable silane groups (a2), in a molar ratio (a1): (a2) of from 15:1 to 1: 1.5, processes for preparing them, and their use.

Oligomers and polymers containing hydrolysates and/or condensates of epoxide groups and silane groups, method for their production and use thereof

Disclosed herein is a silane-functional mixture, comprising at least one phosphonic diester (A), at least one diphosphonic diester (A), or at least one phosphonic diester and one diphosphonic diester (A), and at least one compound (B) comprising at least two condensable silane groups.

Use of phosphonic acid diesters and diphosphonic acid diesters and silane group containing, curable mixtures containing phosphonic acid diesters and diphosphonic acid diesters

Autocatalyzed, thermally curable compositions free from external catalysts and comprising condensates of silanes which contain at least one of hydrolyzable atoms and hydrolyzable groups and processes for preparing them, and their use for producing thermally cured compositions.

Autocatalyzed, thermosetting materials that are free from external catalysts and are based on condensates of epoxy-functional silanes, and use thereof for production of thermosetting materials

An aqueous dispersion with a pH of from 2 to 7, comprising

Aqueous dispersion of inorganic nanoparticles, method for the production and use thereof

Transparent coatings with a thickness of at least 30 &#x3bc;m, a relative elastic resilience to DIN 55676 of at least 70%, and a scratch resistance corresponding to a score of not more than 2 in the steel wool scratch test to DIN 1041 after 10 double strokes; process for producing them, and their use.

Coatings, methods for producing the same, and the use thereof

Polysiloxane sols preparable by subjecting

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Drensteinfurt, Germany

Manuela Niemeier