51.
    发明专利
    未知

    公开(公告)号:DE4430520A1

    公开(公告)日:1996-02-29

    申请号:DE4430520

    申请日:1994-08-27

    Applicant: BASF AG

    Abstract: A process is disclosed for preparing polyaspartic acid salts by treating polycondensates in an aqueous medium with bases. At least 0.7 equivalents of an alkaline metal and/or alkaline earth metal base per mole of the aspartic acid, aspartic acid imide and/or amide units contained in the polycondensates are used. The bases are added during 30 minutes to 20 hours to an aqueous suspension of the polycondensates of aspartic acid heated up to 40 to 140 DEG C, and the reaction mixture is optionally allowed to continue to react. These alkaline metal and/or alkaline earth metal salts of polyaspartic acids obtained by treating aspartic acid polycondensates in an aqueous medium with more than 1 equivalent of an alkaline metal and/or alkaline earth metal base for reducing the molar mass of polycondensates are used as additives for washing and cleaning agents.

    54.
    发明专利
    未知

    公开(公告)号:DE4134770A1

    公开(公告)日:1993-04-29

    申请号:DE4134770

    申请日:1991-10-22

    Applicant: BASF AG

    Abstract: The invention concerns a granular bleach-activator composition containing: A) 30 to 95 parts by weight of one or more 4H-3,1-benzoxazin-4-one derivatives of the formula I, in which R is a C1-C4 alkyl or alkoxy group, a phenyl group, an o-, m- or p-tolyl group, a p-chlorophenyl group, a m-nitrophenyl group, a m-methoxyphenyl group or a m-methylsulphonylphenyl group, or a mixture of compounds of the formula I and other usual bleach activators, with the exception of mixtures of 90 % by wt. or less of compounds of the formula I with 10 % by wt. or more of pentaacetyl glucose, and B) 5 to 70 parts by weight of one or more additives selected from the following categories of compound: 1) anionic surfactants, 2) non-ionic surfactants, 3) zwitter-ionic surfactants, 4) polymers containing carboxylic groups, 5) polysaccharides, 6) poly(alkylene glycol) compounds.

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