A METHOD FOR THE FLUORESCENT WHITENING OF COTTON

摘要

A method for the fluorescent whitening of cotton in a discontinuous process comprising contacting the cotton, I an aqueous bath having a pH value of 6 or less, with one or more compounds of the Formula (I) wherein RSUB1 /SUBrepresents an -SOSUB2/SUBRSUB3/SUB, -SORSUB3/SUB, COSUB2/SUBM, -COSUB2/SUBRSUB3/SUB, -CONRSUB3/SUBRSUB4/SUB, -CN or -NOSUB2 /SUBsubstituent, RSUB2 /SUBis -NHSUB2/SUB, -NH(CSUB1/SUB-CSUB4/SUBalkyl), -N(CSUB1/SUB-CSUB4/SUBalkyl)SUB2/SUB, -NH(CSUB2/SUB-CSUB4/SUBhydroxyalkyl), -N(CSUB2/SUB-CSUB4/SUBhydroxyalkyl)SUB2/SUB, -NH(CSUB1/SUB-CSUB4/SUBalkoxy)(CSUB1/SUB-CSUB4/SUBalkyl), -N[(CSUB1/SUB-CSUB4/SUBalkoxy)(CSUB1/SUB-CSUB4/SUBalkyl)]SUB2/SUB, NHCSUB2/SUB-CSUB4/SUBalkylsulphonic acid, morpholineo, piperidino pyrrolidino, an amino acid or amino acid amide residue from which a hydrogen atom on the amino group has been removed, -OCSUB1/SUB-CSUB4/SUBalkyl or -OCSUB1/SUB-CSUB4/SUBhydroxyalkyl, RSUB3 /SUBand RSUB4 /SUBeach, independently, represent hydrogen, CSUB1/SUB-CSUB4/SUBalkyl, CSUB2/SUB-CSUB4/SUBhydroxyalkyl or CSUB1/SUB-CSUB4/SUBalkoxyCSUB1/SUB-CSUB4/SUBalkyl and M is H, Na, Li, K, Ca, Mg, ammonium, or ammonium that is mono-, di-, tri- or tetrasubsituted by CSUB1/SUB-CSUB4/SUBalkyl, CSUB2/SUB-CSUB4/SUBhydroxyalkyl or a mixture thereof, some of which are new