Ciba Specialty Chemicals Corporation

Serge Hauger

Georges Metzger

Dieter Reinehr

Peter Rohringer

Ted Deisenroth

Rainer Hans Traber

Christophe Bulliard

Hauke Rohwer

Fabienne Cuesta

Hans Kramer

Ullrich Menge

Jean-Jacques Donzé

Michael Milde

Volker Papendick

Marc Roger Grienenberger

A process for improving the sun protection factor (SPF) of cellulosic fibre materials and blends thereof, which comprises contacting said materials with at least one compound of the formula (1) in which M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine; Rand R' independently of each other are hydrogen, hydroxy, optionally substituted alkyl, 4-morpholinyl, &#x2014;NH&#x2014;R, &#x2014;N(R)or &#x2014;O&#x2014;Rwherein Ris optionally substituted alkyl or optionally substituted aryl, Ris a group of formula (2) wherein X is &#x2014;O&#x2014; or &#x2014;NH&#x2014; and Ris C-C-alkyl which carries at least one hydrophilic substituent and R&#x2032; has the meaning of Ror R.

Process for improving the sun protection factor of cellulosic fibre 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

There is described a process for the production of a 1,3-benzoxazin-4-one having the formula: ##STR1## in which R.sub.1 and R.sub.2, independently, are hydrogen, cyano, halogen, nitro, C.sub.1 -C.sub.20 alkyl, O--C.sub.1 -C.sub.20 alkyl, phenyl, NH--CO--C.sub.1 -C.sub.20 alkyl, N(R.sub.3).sub.2, SO.sub.2 N(R.sub.3).sub.2, COOR.sub.3 or CON(R.sub.3).sub.2 in which R.sub.3 is hydrogen, cyano, halogen, nitro, C.sub.1 -C.sub.20 alkyl, O--C.sub.1 -C.sub.20 alkyl, phenyl or NH--CO--C.sub.1 -C.sub.20 alkyl, comprising reacting, at elevated temperature, 1 molar equivalent of an o-hydroxybenzamide of formula: ##STR2## in which R.sub.1 has its previous significance, with 2 to 6 molar equivalents of a benzoyl chloride of formula: ##STR3## in which R.sub.2 has its previous significance. The 1,3-benzoxazin-4-ones having the formula (1) so obtained are important intermediates for the production of triazine compounds having excellent absorption spectrum characteristics and good resistance to exposure to UV light.

Process for the production of benzoxazinones

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Ranspach-le-Bas, France

Serge Hauger