Akzo Nobel N.v.

Heert Andringa

Arie Noomen

Keimpe Jan Van Den Berg

Richard Herman Woudenberg

Frederik Rous

Ignace Damiaan Christiaan Rood

Klaas Jan Hendrik Kruithof

Ann Kerstin Birgitta Lindell Kjellqvist

Photoactivatable water born coating composition comprising Preferably, the (meth)acryloyl-functional polyurethane comprises 8 to 18 wt. % of alkylene oxide groups. More preferably, the coating composition comprises a reactive diluent. The (meth)acryloyl-functional polyurethane is obtainable by reaction of: The water born coating composition is especially suitable for application as a clear coat.

Photoactivatable water borne coating composition

The invention relates to a process of preparing a 2-alkyl-2,3-dihydro-1H-benz�e!indene-1-one derivative, preferably 2,3-dihydro-2-methyl-benz�e!indene-1-one, characterized in that a naphthalene derivative is condensed with an active ester of 2-alkyl-2-propenoic acid, preferably with 2-methyl-2-propenoyl chloride. The product which is obtained in high yield and substantially free from its isomer is an intermediate in the preparation of rac-dimethyl bis(2-alkyl-1H-benz�e!indenyl)silandiyl zirconium dichloride complex.

Process of preparing 2-alkyl-2,3-dihydro-1H-benz �e!indene-1-one

Growing community of inventors

Deventer, Netherlands

Heert Andringa