Basf Aktiengesellschaft

Alexander Aumuller

Hubert Trauth

Martin Holderbaum

Horst Westenfelder

Heinz Friedrich Sutoris

Thomas Wunsch

Andreas Koch

Andreas Deckers

Volker Schehlmann

Guido Voit

Thorsten Habeck

Tom Witzel

Roger G Klimesch

Wilhelm Weber

Arend Jouke Kingma

Eckard Schauss

Karin Sperling

Alfred Krause

Wolfgang Goetze

Jurgen Krockenberger

Manfred Niessner

Holger Herbst

Jacques Dupuis

Konrad Mitulla

Albin Berger

Gunter Brill

Gregor Tremmel

Hermann Uhr

Peter Bottcher

Stabilized monomer composition

Mixtures containing monomers and stabilizers

A cosmetic preparation which comprises a sunscreen agent for protecting the human epidermis against UV light in the range from 280 to 400 nm, which comprises, in a cosmetically suitable carrier, alone or together with compounds which absorb in the UV region and are known for cosmetic preparations, as photostable UV-A filters, effective amounts of compounds of the formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are hydrogen or aliphatic or cycloaliphatic radicals each having up to 18 carbon atoms, it being possible for any two of the radicals R.sup.1, R.sup.2 and R.sup.3 together to form a 5- or 6-membered ring, and R.sup.4 and R.sup.5 are an unsubstituted or substituted aromatic or heteroaromatic radical having 5 to 12 ring atoms, and R.sup.5 can additionally be hydrogen.

Cosmetic preparations comprising photostable UV-A filters

A method of using compounds of formula I ##STR1## in which the C.dbd.C double bond is present in E and/or Z configuration and the variables R.sup.1, R.sup.2, R.sup.3 and R.sup.4 have the meanings defined in the specification disclosure, as UV filters, particularly UV-A filters, in cosmetic and pharmaceutical formulations for the protection of the human skin or human hair from solar radiation, alone or together with compounds known per se in cosmetic and pharmaceutical formulations and capable of absorbing radiation in the UV range.

Photo-stable cosmetic and pharmaceutical formulations containing

Cosmetic preparations containing photostable UV-A filters

Tetramethylpiperidine-containing copolymers

A method of using compounds of formula I ##STR1## in which the C.dbd.C double bond is present in E and/or Z configuration and the variables have the following meanings:

4-acylaminopiperidin-N-oxyle

Preparation of 2-cyano-3,3-diarylacrylic esters

A process for compressing ethylenically unsaturated monomers at a pressure of 200-5000 bar in the absence of a polymerization initiator comprises carrying out compression in the presence of a sterically hindered amine derivative.

Compression of ethylenically unsaturated monomers

N,N'-bridged bistetramethylpiperidinyl compounds, which are produced by reacting tetramethylpiperidinyl compounds with a cyclic carbonate, and are useful as light stabilizers for organic material.

Preparation of N, N'-bridged bistetramethylpiperidinyl compounds

2-cyanoacrylic esters

3-arylacrylic acid ester light-protection stabilizers for organic

Stabilizer mixture composed of chroman derivatives, organic phosphites

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Neustadt, Germany

Alexander Aumuller