2.
    发明专利
    未知

    公开(公告)号:FI951056A0

    公开(公告)日:1995-03-07

    申请号:FI951056

    申请日:1995-03-07

    Applicant: BASF AG

    Abstract: Aq. dyestuff preparations contg. w.r.t. the wt. of the prepn. and calculated as the free acid, 12-30 wt% of a coumarin dye of formula (I), in which L and L = 1-4C alkyl and Cat = an alkali metal ion or ammonium ion of formula (HN(R )(R )(R )) ; R , R and R = H, 1-4C alkyl or 2-4C hydroxyalkyl.

    3.
    发明专利
    未知

    公开(公告)号:FI951056A

    公开(公告)日:1995-09-08

    申请号:FI951056

    申请日:1995-03-07

    Applicant: BASF AG

    Abstract: Aq. dyestuff preparations contg. w.r.t. the wt. of the prepn. and calculated as the free acid, 12-30 wt% of a coumarin dye of formula (I), in which L and L = 1-4C alkyl and Cat = an alkali metal ion or ammonium ion of formula (HN(R )(R )(R )) ; R , R and R = H, 1-4C alkyl or 2-4C hydroxyalkyl.

    5.
    发明专利
    未知

    公开(公告)号:NO172747C

    公开(公告)日:1993-09-01

    申请号:NO902392

    申请日:1990-05-30

    Applicant: BASF AG

    Abstract: Triphenylmethane dyes of the formula +TR where each R1 is independently of the others hydrogen or substituted or unsubstituted C1-C6-alkyl, or two R1 radicals together with the nitrogen atom joining them form a heterocyclic radical, R2 and R5 is independently of the others hydrogen or C1-C4-alkyl, R3 and R4 is independently of the others hydrogen, C1-C4-alkyl, C1-C4-alkoxy or halogen, An(-) is one equivalent of an anion, and n is 1 or 2, preparable from piperazine derivatives as intermediates, are useful for coloring paper.

    7.
    发明专利
    未知

    公开(公告)号:DE59301914D1

    公开(公告)日:1996-04-18

    申请号:DE59301914

    申请日:1993-09-23

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP93/02580 Sec. 371 Date Mar. 15, 1995 Sec. 102(e) Date Mar. 15, 1995 PCT Filed Sep. 23, 1993 PCT Pub. No. WO94/08092 PCT Pub. Date Apr. 14, 1994A process for dyeing paper in connection with paper manufacture by adding water-soluble anionic dyes and cationic polymers which contain vinylamine units to the paper pulp as fixing agents and removing water from the paper pulp with the formation of dyed paper is described.

    8.
    发明专利
    未知

    公开(公告)号:FI951516A

    公开(公告)日:1995-03-30

    申请号:FI951516

    申请日:1995-03-30

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP93/02580 Sec. 371 Date Mar. 15, 1995 Sec. 102(e) Date Mar. 15, 1995 PCT Filed Sep. 23, 1993 PCT Pub. No. WO94/08092 PCT Pub. Date Apr. 14, 1994A process for dyeing paper in connection with paper manufacture by adding water-soluble anionic dyes and cationic polymers which contain vinylamine units to the paper pulp as fixing agents and removing water from the paper pulp with the formation of dyed paper is described.

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