Basf Aktiengesellschaft

Alexander Aumueller

Hubert Trauth

Peter Neumann

Alfred Krause

Martin Holderbaum

Reinhard Helwig

Helmut Reichelt

Erwin Hahn

Peter Spang

Bernd Hupfeld

Siegfried Huenig

Walter Denzinger

Wolfgang Reuther

Gerhard Heinz

Volker Schehlmann

Peter Erk

Heinz Eilingsfeld

Horst Westenfelder

Albert Hettche

Gerd Blinne

Thorsten Habeck

Reinhold Krallmann

Juergen Koch

Gerhard Lindenschmidt

Thomas Wunsch

Wolfgang Eberle

Dieter Wegerle

Herbert Bender

Guenter Matzke

Wolfgang Goetze

Eckhard Korona

Peter Neuman

Heinrich J Eilingsfeld

Christiane Husemann

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

Maleimide/.alpha.-olefin copolymers are composed of structural units I ##STR1## where R.sup.1 is a tetramethylpiperidinyl radical of the formula II ##STR2## R.sup.3 is hydrogen, C.sub.1 -C.sub.6 -alkyl, formyl, C.sub.2 -C.sub.6 -alkanoyl, C.sub.1 -C.sub.12 -alkoxy, C.sub.5 - or C.sub.6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula --CR.sup.4 =CH--CO--OR.sup.5, R.sup.4 is hydrogen, C.sub.1 -C.sub.6 -alkyl or a radical of the formula --CO--OR.sup.5, and R.sup.5 is C.sub.5 -C.sub.18 -alkyl, C.sub.5 -C.sub.8 -cycloalkyl, C.sub.7 -C.sub.18 -aralkyl, phenyl or tolyl, and up to 8 mol %, based on II, of R.sup.1 may furthermore be hydrogen, C.sub.1 -C.sub.22 -alkyl or C.sub.5 -C.sub.8 -cycloalkyl, and R.sup.2 is a mixture of C.sub.14 -C.sub.28 -alkyl groups, where two of these alkyl groups, which may differ by no more than two carbon atoms, each account for at least 30% of this mixture, having an average molecular weight of from 1,000 to 50,000. The copolymers described are suitable as light stabilizers and stabilizers for organic material, in particular plastics and coatings.

Maleimide/.alpha.-olefin copolymers and their use as light stabilizers

N-vinyl-containing glycoluril derivatives and their use as light

Polyalkylpiperidine containing acetic acid and 3-amino-acrylic acid

Aminovinylphosphonic ester stabilizers for organic material

Polyalkylpiperidinyl-containing .beta.-aminoacrylic ester derivatives

Amino compounds as processing stabilizers for thermoplastic materials

Esters and amides of aminomethylenecyanoacetic acid a cosmetic

N-(.beta.-carbony- and .beta.-cyanovinyl)-2,2,6,6-tetramethyl-piperidine

A process for preparing polyaryl ethers of the formula I or Ia ##STR1## by condensation of at least one appropriate bisphenol with at least one appropriate aromatic dichloride in the presence of an alkali metal carbonate in a dipolar aprotic solvent, is carried out in the presence of a catalyst selected from the alkali metal nitrites and the group of compounds of the formula II ##STR2## where r.sup.1 and r.sup.3 are each hydrogen, C.sub.7 -C.sub.16 -phenylalkyl, C.sub.1 -C.sub.12 -alkoxy, fluorine, chlorine, bromine, iodine or nitro, and R.sup.2 is nitro or nitroso, or ##STR3## where R.sup.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, fluorine, chlorine, bromine or iodine.

Preparation of polyaryl ethers with nitrogen compound catalysts

The use of an aminovinyl-substituted heterocyclic compound of the general formula I ##STR1## in which R.sup.1 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, or halogen, and, if more than one radical R.sup.1 are present, these may be the same or different,

Aminovinyl-substituted heterocyclic compounds as stabilizers for organic

A process for the preparation of aromatic carbonyl or sulfonyl compounds with a diaryl ether structure by reacting phenols with halogenated carbonyl- or sulfonylaromatic compounds in a dipolar aprotic solvent is carried out in the presence of catalytic amounts of alkali metal nitrite or an aromatic nitro, nitroso, azo, azoxy or hydrazo compound.

Preparation of aromatic carbonyl or sulfonyl compounds with an aryl

A polyalkylpiperidine derivative of formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, phenyl- or tolylalkyl with 1 to 4 carbon atoms in the alkyl, C.sub.1 -C.sub.6 -acyl, benzoyl, allyl, cyanomethyl, hydroxyethyl, aminoethyl, hydroxyl or oxyl free radical,

Polyalkylpiperidine compounds

Polyalkylpiperidine derivatives of the formula I ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.8 -alkyl, phenyl- or tolylalkyl with 1 to 4 carbon atoms in the alkyl, C.sub.1 -C.sub.6 -acyl, benzoyl, allyl, cyanomethyl, hydroxyethyl, aminoethyl, hydroxyl or oxyl free radical,

Cyclic amides of the general formula I ##STR1## where A is a group of the formula ##STR2## where in each case the left-hand free bond is linked to the amide nitrogen and the right-hand free bond, depending on the group, is a single or double bond, and where R.sup.7 to R.sup.12 are hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl, and R.sup.13 is one of the radicals R.sup.7 to R.sup.12 or hydroxyl,

Cyclic amides

Growing community of inventors

Deidesheim, Germany

Alexander Aumueller