Degussa Aktiengesellschaft

Evonik Degussa Gmbh

Patrick Gloeckner

Peter Denkinger

Lutz Mindach

Giselher Franzmann

Werner Andrejewski

Alessandro Cerri

Martina Ortelt

Michael Ewald

Bettina Burian

Joern-Volker Weiss

Hans-Peter Bergmann

Iris Brueckner

Franz-Josef Wesselbaum

Thomas Weber

A resin is based on ketones and aldehydes and is prepared in methanol or ethanol in the presence of a phase transfer catalyst. The resin features a very broad solubility and low intrinsic color.

Resins based on ketones and aldehydes, having improved solubility properties and low color numbers

Radiation-curable resins containing a carbonyl-hydrogenated ketone-aldehyde and/or a ring-hydrogenated phenyl-aldehyde resins, and a process for preparing them.

Radiation-curable resins based on hydrogenated ketone-aldehyde and phenol-aldehyde resins and a process for preparing them

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

Binders for coating materials that exhibit high flexibility and good hardness contain a polymer-modified resin, containing I) at least one polyester having a hydroxyl group or a carboxyl group or both, and II) at least one glycidyl-containing polyacrylate. The polyester I contains an alcohol component containing of from 0.5 to 80 mol % of a dicidol fraction, and the resin is obtained by free-radical polymerization of the starting component(s) for the preparation of the polyacrylate II in the presence of the polyester I in at least one organic solvent.

Polymer-modified resins

An aqueous dispersion, contains: a) an amorphous urethanized, unsaturated polyester resin, b) a nonvolatile content of from 20% to 60% by weight, c) from 0 to 60% by weight of a solvent, d) a pH of between 5.0 and 9.5, and e) a viscosity at 20&#xb0; C. of from 20 to 500 mPas. The polyester resin is obtained from I. an alcohol component, II. i) from 20 to 100 mol % of an &#x3b1;,&#x3b2;-unsaturated carboxylic acid component, and ii) from 0 to 80 mol % of a further carboxylic acid component, and III. at least one isocyanate component. The alcohol component contains a dicidol mixture of the isomeric compounds 3,8-bis(hydroxymethyl)tricyclo[5.2.1.0]decane, 4,8-bis(hydroxymethyl)tricyclo[5.2.1.0]decane and 5,8-bis(hydroxymethyl)tricyclo[5.2.1.0]decane. Each isomer is present in a fraction of from 20 to 40% in the dicidol mixture. The sum of the three isomers in the dicidol mixture is from 90 to 100%. The dicidol mixture is present from 10 to 100 mol % in the alcohol component of the polyester.

Dispersions of amorphous urethanized unsaturated polyester resins based on particular 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 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.

Growing community of inventors

Ratingen, Germany

Patrick Gloeckner