Basf Coatings Gmbh

Basf Coatings Japan Limited

Basf Japan, Ltd.

Björn Feldmann

Andreas Poppe

Sabine Holtschulte

Günter Klein

Karl-Heinz Joost

Oliver Hilge

Ulrike Clausen-Meiring

Hitoshi Taniguchi

Julia Melzer

Hiroyuki Takagi

Eishi Tsukamoto

Silke Hottenbacher

Gunther Ott

Matthijs Groenewolt

Ulrike Röckrath

Manuela Niemeier

Benedikt Schnier

Wilfried Stübbe

Thomas Farwick

Simone Hesener

Ulrike Wenking

Carmen Kunszt

Petra Wagner

Tanja Bricke

Veronika Lackstadter

Bianca Giesen

Bianca Hunder

Veronika LACKSTÄDTER

Norbert LÖW

Disclosed is a hyperbranched, dendritic, hydroxyl-functional polyester comprising an OH number greater than or equal to 180 mg KOH/g as measured via DIN 53240 and to clearcoat compositions comprising said polyesters. Also disclosed are processes for preparing the disclosed polyester, methods of making coated automotive substrates by applying the disclosed clearcoat compositions to automotive substrates, and to coated substrates made therefrom.

Clear paint compositions comprising hyperbranched, dendritic, hydroxyl-functional polyesters

Binder mixture comprising a hydroxyl-containing compound (A), and at least 1.0% by weight, based on the nonvolatile constituents of the binder mixture, of a phosphorus- and nitrogen-containing catalyst (D) for the crosslinking of silane groups, wherein the hydroxyl-containing compound (A) comprises a hydroxyl-functional polyester having on average at least one hydroxyl function of the polyester esterified with a C8 to C9 monocarboxylic acid, and the catalyst (D) is blocked with at least one tertiary amine of the formula (I) where Ris an acyclic aliphatic or araliphatic hydrocarbon radical having at least 3 C atoms, Ris an acyclic aliphatic or araliphatic hydrocarbon radical which is the same or different from Rand/or R, and Ris hydrogen or an acyclic aliphatic or araliphatic hydrocarbon radical which is the same or different from Rand/or R.

Binding agent mixture, coating agents containing said binding agent mixture, and coatings produced from said coating agents, said coatings having a high scratch resistance, high weathering stability, and good optical properties

The present invention relates to a coating composition comprising

Coating composition having a high scratch resistance and weathering stability

Coating agent having high scratch resistance and high weathering resistance

The invention relates to coating compositions comprising The present invention also provides a multistage coating method using these coating compositions, and also the use of the coating compositions as clearcoat material for producing multicoat effect and/or color paint systems, and use of the coating method for automotive OEM finishing and automotive refinish.

Coating compositions and coatings produced from them with high scratch resistance, weathering stability, and good optical properties

Disclosed is a finish paint composition having a hydroxyl group containing resin (A) comprising a hydroxyl group value of 80 to 220 mgKOH/g, a glass transition temperature of &#x2212;50&#xb0; or above but below 0&#xb0; C., and 25 to 55 mass% of units of 4-hydroxybutyl (meth)acrylate origin, a hydroxyl group containing resin (B) with a hydroxyl group value of 80 to 220 mgKOH/g, and a glass transition temperature of 0 to 50&#xb0; C., and a crosslinking agent (C) comprising polyisocyanate compound having isocyanate groups, wherein the proportions of hydroxyl group containing resin (A) and hydroxyl group containing resin (B) are, as a ratio of solid fraction masses, from 95/5 to 50/50, and the proportion of isocyanate groups of the crosslinking agent (C) with respect to the hydroxyl groups in total of the hydroxyl group containing resin (A) and the hydroxyl group containing resin (B), as the NCO/OH mol ratio, is 0.5 to 1.5.

Paint compositions, a method of finish-painting and painted objects

Disclosed herein is a polyol (A) based on modified amino resins, prepared by reacting: an amino resin (B) comprising three acetalized or etherified N-methylol groups of the general formula (I) &#x3e;N&#x2014;CHR&#x2014;OR, wherein R is a hydrogen atom, an alkyl group of 1 to 6 carbon atoms or an aryl group of 6 to 10 carbon atoms and Ris an alkyl group of 1 to 6 carbon atoms; with a polyol (C) of the general formula (II) R(&#x2014;OH), wherein n is a number from 2 to 6 and Ris a divalent to hexavalent organic radical; wherein an equivalent ratio of the acetalized or etherified N-methylol groups to the polyol (C) is 0.5:1 to 1.2:1; with elimination of at least 50 mol % of a monoalcohol (D) of the general formula R&#x2014;OH, wherein Ris as defined above, from the amino resin (B).

Polyols based on modified amino resins, process for their preparation and their use

Growing community of inventors

Münster, Germany

Björn Feldmann