Abstract: 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; R1 and R1? independently of each other are hydrogen, hydroxy, optionally substituted alkyl, 4-morpholinyl, —NH—R3, —N(R3)2 or —O—R3, wherein R3is optionally substituted alkyl or optionally substituted aryl, R2 is a group of formula (2) wherein X is —O— or —NH— and R4 is C1-C4-alkyl which carries at least one hydrophilic substituent and R2? has the meaning of R1 or R2.

Abstract: 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) according to claim 1.

Abstract: The present invention relates to novel compounds represented by the formula (1): wherein R1 and R2, independently, represent —NH2, NH(C1-C4alkyl), —N(C1-C4alkyl)2, —NH(C2-C4hydroxyalkyl), —N(C2-C4hydroxyalkyl)2, —N(C1-C4alkyl)(C2-C4hydroxyalkyl), —NH(C1-C4alkoxy-C2-C4hydroxyalkyl), —N(C1-C4alkoxy-C2-C4hydroxyalkyl)2, —N(C1-C4alkoxy-C2-C4hydroxyalkyl)(C1-C4alkyl), —N(C1-C4alkkoxy-C2-C4hydroxyalkyl)(C2-C4hydroxyalkyl), NH(C1-C4alkoxy-C1-C4-alkoxy-C1-C4alkyl), —N(C1-C4alkoxy-C1-C4alkkoxy-C1-C4-alkyl)2, —N(C1-C4alkoxy-C1-C4alkoxy-C1-C4-alkyl)(C1-C4alkyl), —N(C1-C4alkoxy-C1-C4alkoxy-C2-C4-alkyl)(C2-C4hydroxyalkyl) —NH(C5-C7cycloalkyl), —N(C5-C7cycloakyl)2, —NH(C6-C10aryl), NH(C7-C13-aralkyl) or a morpholino, piperidino or pyrrolidino residue; halogen or —OC1-C4alkyl, which is unsubstituted or substituted by hydroxy or —C1-C4alkoxy, a process for their preparation and their use as fluorescent whitening agents (FWA'

Abstract: The present invention relates to compounds having formula (1): wherein each R1 represents, independently, a linear C1-C4-alkylene residue which is unsubstituted or substituted by hydroxy, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-hydroxy- or alkoxy-alkoxy, —OCOM, —OCOC1-C4-alkyl, or an amino acid residue from which a hydrogen atom on the amino group has been removed; each R2 represents, independently, a linear C1-C4-alkylene residue which is unsubstituted or substituted by hydroxy, C1-C4-alkyl, C1-C4-alkoxy, C1-C4-hydroxy- or alkoxy-alkoxy, —OCOM, —OCOC1-C4-alkyl, —CO2M, CO2C1-C4-alkyl SO3M or phenoxy which is unsubstituted or substituted by halogen, C1-C4-alkyl or C1-C4-alkoxy, —CO2M or CO2C1-C4-alkyl, NH3 or mono- or disubstituted amino; or phenyl which is unsubstituted or substituted by 1 to 3 SO3M, SO2NHC1-C4-alkyl, —SO2NH2, —CO2M, —CO2M, —CO2C1-C4-alkyl, —CONH2, —CONHC1-C4-alkyl, —NHCOC1-C4-alkyl or mono- or disubstituted amino groups;

Abstract: 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.