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    Fluorescent Whitening Pigments
    1.
    发明申请
    Fluorescent Whitening Pigments 审中-公开

    公开(公告)号：US20080040865A1

    公开(公告)日：2008-02-21

    申请号：US10579490

    申请日：2004-11-08

    申请人： Ted Deisenroth ,  Kamalesh Pai Fondekar ,  Peter Rohringer ,  Fabienne Cuesta ,  Ramachandra V. Joshi ,  Smita G. Kavishwar ,  Uma Shadakshari

    发明人： Ted Deisenroth ,  Kamalesh Pai Fondekar ,  Peter Rohringer ,  Fabienne Cuesta ,  Ramachandra V. Joshi ,  Smita G. Kavishwar ,  Uma Shadakshari

    IPC分类号： C08G12/32 ,  C08G12/38 ,  C09B69/10 ,  D21H17/49

    CPC分类号： C08G12/38 ,  C08G12/32 ,  C09B23/148 ,  D21H17/51 ,  D21H21/18 ,  D21H21/30

    摘要： A whitening pigment comprising the reaction product of (a) a melamine-formaldehyde and/or a melamine-urea poly-condensation product and (b) a water-soluble fluorescent whitening agent of the formula (1), wherein each of the two R1 groups, independent of the other, represents a C1-C6alkyl or C1-C4alkyl-O—C1-C4alkyl residue, which is substituted by one or two —CONH2, —CONHC1-C4alkyl, —COOH, —SO2NH2, —SO2NHC1-C4alkyl or —NH2 groups, each of the two R2 groups, independent of the other, represents hydrogen, C1-C4alkyl, C2-C4hydroxyalkyl or C1-C4alkoxyC1-C4alkyl, or R1 and R2 together with the nitrogen atom complete a piperazine ring, each of the two X1 groups, independently, represent —OH, —OC1-C4alkyl, —Oaryl or the group —NR3R4, wherein R3 and R4 each, independently, represent hydrogen, C1-C4alkyl, C2-C4hydroxyalky, C1-C4alkoxyC1-C4alkyl, a phenyl, phenyl mono- or disulphonic acid residue or, R3 and R4, together with the nitrogen atom to which they are attached, complete a morpholino, piperidino or pyrrolidino ring or, alternatively, X1 represents an amino acid residue from which a hydrogen atom has been abstracted from the amino group and M is hydrogen, an alkaline or alkaline earth metal ion, ammonium, mono- di-, tri- or tetra-substituted C1-C4alkylammonium or C2-C4hydroxyalkylammonium or mixtures thereof, a process for preparation of the pigments and the use thereof for the fluorescent whitening of paper.