Ciba Specialty Chemicals Corporation

Basf Se Corporation

Christophe Bulliard

Ramanathan Ravichandran

Georges Metzger

James Peter Galbo

Robert E Detlefsen

Vien V Toan

Peter Solera

Gerald A Capocci

Michael P DiFazio

Nancy N Cliff

Helmut Luther

Gerhard Rytz

Dietmar H&uuml;glin

Sonia Megert

Dieter Reinehr

Mervin Gale Wood

David G Leppard

Joseph Suhadolnik

Pascal Hayoz

Peter Rohringer

Thomas Schäfer

Jacqueline Lau

Fabienne Cuesta

Thomas Schafer

Stéphane Biry

Carmen Hendricks-Guy

Serge Hauger

Suruliappa Gowper Jeganathan

Marc Roger Grienenberger

Peter Michaelis

Christian Zumwald

Vien Van Toan

Novel compounds of formula I are described whereinE corresponds to the formula or to the formula and the radicals R, R, R, R, R', R&#x2032;and R&#x2032;are as defined in claim. Compounds of formula I are suitable for stabilizing organic material, especially plastics materials, surface-coatings, cosmetic preparations, sun protection agents or photographic material, against damage by light, oxygen and/or heat.

Naphthyltriazines as stabilizers for organic material

A process for removing stain in a photographic material is described which process comprises incorporation of at least one compound of the formula (I)wherein

Process for removing stain in a photographic material

The present invention relates to compounds having formula ( ): wherein each R represents, independently, a linear C -C -alkylene residue which is unsubstituted or substituted by hydroxy, C -C -alkyl, C -C -alkoxy, C -C -hydroxy- or alkoxy-alkoxy, &mdash;OCOM, &mdash;OCOC -C -alkyl, or an amino acid residue from which a hydrogen atom on the amino group has been removed; each R represents, independently, a linear C -C -alkylene residue which is unsubstituted or substituted by hydroxy, C -C -alkyl, C -C -alkoxy, C -C -hydroxy- or alkoxy-alkoxy, &mdash;OCOM, &mdash;OCOC -C -alkyl, &mdash;CO M, CO C -C -alkyl SO M or phenoxy which is unsubstituted or substituted by halogen, C -C -alkyl or C -C -alkoxy, &mdash;CO M or CO C -C -alkyl, NH or mono- or disubstituted amino; or phenyl which is unsubstituted or substituted by 1 to 3 SO M, SO NHC -C -alkyl, &mdash;SO NH , &mdash;CO M, &mdash;CO M, &mdash;CO C -C -alkyl, &mdash;CONH , &mdash;CONHC -C -alkyl, &mdash;NHCOC -C -alkyl or mono- or disubstituted amino groups; each R represents independently, hydrogen, C -C -alkyl, halogen, cyano, SO M, &mdash;SO NH , SO NHC -C -alkyl, &mdash;CO M, &mdash;CO C -C -alkyl, &mdash;CONH , &mdash;CONHC -C -alkyl, or &mdash;NHCOC -C -alkyl; M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine and m is an integer of 1 to 3, a process for their preparation and use of the compounds as optical brightening agents for synthetic or natural organic materials or for removing stain in photographic materials.

Triazinylaminostilbene derivative as fluorescent whitening agents

Hindered amines substituted on the N-atom with an &mdash;O&mdash;E&mdash;OH moiety are particularly effective in stabilizing polyolefin and automotive coating compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of the OH group on the compounds adds important properties not attainable by the use of normal &mdash;O&mdash;E moieties.

Hydroxy-substituted N-alkoxy hindered amines and compositions stabilized therewith

A process for removing stain in a photographic material is described which process comprises incorporation of at least one compound of formula (I) wherein X is O or NH; n is 1 or 2, p is 0, 1 or 2, M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine; each R , independently, is an amimoacid residue from which a hydrogen atom on the amino group has been removed; each R , independendy, is hydrogen, C -C alkyl, C -C alkoxy, halogen, cyano, COOR, wherein R is hydrogen or C -C alky1, CONH&mdash;R in which R has its previous significance, SO NH&mdash;R in which R has its previous significance, NH&mdash;COR in which R has its previous significance, or SO M, wherein M has its previous significance, or, if n is 1, R can also be CO&mdash;R in which R is C -C alkyl or phenyl, in that photographic material.

Process for the removing stain in a photographic material

2H-Benzotriazole UV absorbers substituted at the 3-position and/or the 5-position of the phenyl ring by &agr;-cumyl moiety which is substituted by a heteroatom are particularly photostable in automotive coatings, and are of low color and exhibit low volatility in thermoplastic compositions.

Benzotriazoles containing &agr;-cumyl groups substituted by heteroatoms and compositions stabilized therewith

Hindered amines substituted on the N-atom with an hydroxy-substituted alkoxy moiety are particularly effective in stabilizing organic polymer compositions against the deleterious effects of oxidative, thermal and actinic radiation where the presence of the OH group on the compounds adds important properties not otherwise attainable.

A description is given of compounds of the formula I

Hydroxyphenyltriazines

Hydroxyphenyl triazines

A description is given of compounds of the formula wherein R and R' independently are H, methyl or ethyl. The novel compounds are effective as stabilizers for organic material against the damaging effect of light, oxygen and heat; they are also suitable for use in skin or hair protection preparations.

The invention relates to a color-photographic recording material comprising, on a support, a blue-sensitive, a green-sensitive and/or a red-sensitive silver-halide emulsion layer, a protection layer above the sensitive layers, and, if desired, separation layers between the sensitive layers, where at least one of said layers includes a UV absorber of the formula ##STR1## The stabilizers of the formula (1) or (1a) have good inherent stability and high light absorption; the photographic recording material described has excellent stability of the magenta, cyan and yellow layers.

Color-photographic recording material

A description is given of novel O-phenol-substituted aminophenol derivatives of the formula ##STR1## in which the symbols are as defined in claim 1, which can be used in particular as stabilizers for magenta couplers in color-photographic recording materials.

4-aminophenol derivatives

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Basel, Switzerland

Christophe Bulliard