Degussa Aktiengesellschaft

Chemische Werke Huls Aktiengesellschaft

Chemische Werke Huels Aktiengesellschaft

Werner Andrejewski

Peter Denkinger

Patrick Gloeckner

Alessandro Cerri

Martina Ortelt

Giselher Franzmann

Patrick Glöckner

Jorg Dorffel

Stephan Kohlstruk

Andreas Wenning

Lutz Mindach

Wilfried Bartz

Michael Ewald

Werner Freitag

Bernd Ondruschka

Uwe Biethan

Thomas Weber

Peter Scholz

Andreas Berlineanu

Dieter Stoye

Adolf Draxler

Hans-Peter Bergmann

Iris Brueckner

A process for preparing ketone-formaldehyde resins, especially acetophenone- and cyclohexanone-formaldehyde resins, having a low water content and high thermal stability and yellowing resistance, and a process for their production and their use.

Preparation of ketone-formaldehyde resins

The invention relates to unsaturated, amorphous polyesters based on certain dicidol isomers and on saturated and/or unsaturated dicarboxylic acids.

Unsaturated amorphous polyesters based on certain dicidol isomers

The invention described herein provides ketone-aldehyde resins, especially cyclohexanone-formaldehyde resins, with low water content and high thermal stability and yellowing resistance, and to a process for preparing them and their use.

Ketone-aldehyde resins having low water content, high thermal stability and yellowing resistance

An aqueous dispersion based on an amorphous unsaturated polyester resin obtained by polycondensing a mixture of Dicidol isomers and one or more saturated and/or unsaturated dicarboxylic acids.

Dispersions of amorphous unsaturated polyester resins based on particular Dicidol isomers

An epoxidized polyalkenylene is prepared reacting a polyalkenylene, an aqueous solution of 15 to 90% by volume of hydrogen peroxide and a carboxylic acid having from 1 to 3 carbon atoms in the presence of a catalyst which is phosphonic acid, a derivative of phosphonic acid or a mixture thereof, without addition of an organic solvent or water, to obtain the epoxidized polyalkenylene. The epoxidized polyalkenylene has a number-average molar mass of between 500 and 50 000 g/mol and an epoxide oxygen content of between 1 and 25 percent by mass.

Epoxidized polyalkenylenes and method for their preparation

An adhesion promoter additive contains at least one unsaturated, amorphous polyester containing 1) an acid component comprising at least one &agr;,&bgr;-unsaturated dicarboxylic acid, and 2) an alcohol component. The alcohol component contains at least 5% of a dicidol mixture of the isomeric compounds a) 3,8-bis(hydroxymethyl)tricyclo&lsqb;5.2.1.0 &rsqb;decane, b) 4,8-bis(hydroxy-methyl)-tricyclo&lsqb;5.2.1.0 &rsqb;decane and c) 5,8-bis-(hydroxymethyl)tricyclo&lsqb;5.2.1.0 &rsqb;decane. Each isomer is present in the dicidol mixture in a proportion of from 20 to 40% by weight. A sum of the isomeric compounds a)-c) is from 90 to 100% by weight.

Adhesion promoter additive comprising an unsaturated, amorphous polyester

In a liquid coating composition comprising a small amount of solvent or no solvent, a binder and optionally conventional auxiliary agents, wherein the binder consists essentially of:

Liquid coating compositions containing little or no solvent

Liquid, highly pigmentable coating compositions containing little or no solvent and which are suitable for spray coating employ a binder consisting either of A. 45-10% by weight of an aminoplast, a low-molecular weight precursor thereof, or a mixture thereof, and B. 55-90% of an at least bifunctional polyester, or a mixture thereof, having predominantly hydroxy end groups, a degree of condensation of between 2.5 and 10.5 and a molecular weight of up to 1,000, and prepared by condensing an alcohol component consisting of 0-30 molar percent of one or more 3-6 carbon atom polyols having 3-4 hydroxy groups and 100-70 molar percent of a mixture of diols consisting of 33-90 molar percent of ethylene glycol and 67-10 molar percent of 1,2-propanediol, or a condensation product of A and B.

Highly pigmentable, liquid coating compositions

Polyolefin rubber is coated with an isocyanate-curing varnish whose binder is a mixture of (a) a saturated oligoester resin containing hydroxyl groups and having a molecular weight of 250-3,500 and whose alcohol component is at least difunctional and 20-100 mole percent of which is 1,4-bis(hydroxymethyl)cyclohexane; and (b) a di- or poly-functional isocyanate or mixture thereof, wherein the ratio of isocyanate groups of the isocyanate to the hydroxyl groups of the oligoester resins is about 0.75 : 1 to 1 : 1, by pre-treating the vulcanized rubber article with a strong oxidizing agent or by irradiation with ultraviolet light.

Growing community of inventors

Dorsten, Germany

Werner Andrejewski