Basf Aktiengesellschaft

Basf Se Corporation

Harald Meyer

Axel Sanner

Karl-Heinz Schumacher

Ulrich Erhardt

Franz Frosch

Heinrich Hartmann

Bernd Bruchmann

Walter Denzinger

Hans-Juergen Raubenheimer

Wolf-Dieter Balzer

Volker Ladenberger

Hans J Richter

Jochem Henkelmann

Son Nguyen Kim

Stephan Bauer

Michael Ehle

Heike Becker

Reinhard Schneider

Ralf Fink

Martin Jung

Uwe Duesterwald

Frank Fischer

Ludger Wegmann

Jurgen Nieberle

Martin R{umlaut Over (u)}benacker

Modified polyvinyllactams

The invention relates to radically copolymerizable acetophenone or benzophenone derivatives, obtained by reaction of The invention also relates to copolymers that contain copolymerizable photoinitiators of the invention and to the use of said copolymers in UV-crosslinkable compositions, particularly hot-melt adhesives.

Copolymerizable photoinitiators for UV-crosslinkable adhesives

The invention relates to radically copolymerizable acetophenone or benzophenone derivatives, which may be obtained by reacting a) acrylic or methacrylic compounds, which contain at least one isocyanate-reactive group [compounds a)], with b) compounds, which contain at least two isocyanate groups [compounds b)] and c) acetophenone or benzophenone derivatives, which contain at least one isocyanate-reactive group [compounds c)]. Said invention also relates to copolymers, which contain said copolymerizable photoinitiators, as well as to the use of said copolymers in UV-crosslinkable substances, in particular hot-melt pressure-sensitive adhesives.

The present invention relates to the use of acetophenone or benzophenone derivatives of the formula I whereR is unsubstituted or substituted The invention further relates to copolymers containing acetophenone or benzophenone derivatives of the formula I in copolymerized form, to processes for preparing said copolymers, and to the use of said copolymers in UV crosslinkable compositions.

UV-crosslinkable copolymers

A composition containing a melt-processing water-free, solvent-free polyacrylate and an anti-oxidizing agent which contains at least one aromatically bonded hydroxyl group and which is exclusively comprised of hydrogen, carbon and oxygen atoms.

UV cross-linkable melt adhesives containing stabilizers

Agglomerated particles of water-swellable addition polymers, preparation thereof and use thereof

Stabilization of copolymers of maleic acid or maleic anhydride and vinyl

Copolymers which contain a) from 2 to 50 mol % of vinyl alkyl ethers having 3 to 30 carbon atoms in the molecule, b) from 10 to 88 mol % of monoethylenically unsaturated dicarboxylic anhydrides and c) from 10 to 88 mol % of dialkyl esters of monoethylenically unsaturated dicarboxylic acids as typical monomer units in polymerized form are prepared by copolymerizing the monomers a), b) and c) at from 40.degree. to 180.degree. C. in the presence of free radical initiators and are used as film-forming resins in hair sprays and, in the form of the alkali metal, ammonium or alkaline earth metal salts, as thickeners for aqueous systems, such as cosmetic and pharmaceutical formulations, textile print pastes, liquid detergents and cleaning agents.

Copolymers based on vinyl ethers and monoethylenically unsaturated

Preparation of copolymers of monoethylenically unsaturated monomers

Copolymers of monoalkyl maleates or maleic acid and salts thereof and vinyl alkyl ethers are prepared by free radical copolymerization of maleic anhydride and vinyl alkyl ethers and subsequent reaction with an alkanol or water and optionally metal hydroxides and/or oxides in a process wherein at every stage of the polymerization the vinyl alkyl ether component is present in excess in the reaction mixture, the free radical copolymerization is carried out in acetone and the acetone is removed by distillation during or after the esterification or hydrolysis, which comprises using a peroxyester of a carboxylic acid of 8 or more carbon atoms as polymerization initiator. The copolymers obtained are used in cosmetic preparations.

Preparation of copolymers of monoalkyl maleates or maleic acid and salts

Growing community of inventors

Wachenheim, Germany

Harald Meyer