中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

79 records (took 0.023 seconds)

    6.
    发明专利
    未知

    公开(公告)号：DE58908529D1

    公开(公告)日：1994-11-24

    申请号：DE58908529

    申请日：1989-11-06

    Applicant: BASF AG

    Inventor： PERNER JOHANNES DR ,  DIESSEL PAUL ,  HARTMANN HEINRICH DR ,  DENZINGER WALTER ,  OFTRING ALFRED DR ,  SCHOENLEBEN WILLIBALD DR

    IPC: C11D3/32 ,  C11D3/37

    Abstract: The use of copolymers which contain as essential copolymerised units (a) 50 to 99 mol% of units of monoethylenically unsaturated (a) C3- to C8-monocarboxylic acids, monoethylenically unsaturated C4- to C8-dicarboxylic acids, hemiesters of monoethylenically unsaturated C4- to C8-dicarboxylic acids, esters of monoethylenically unsaturated C3- to C8-carboxylic acids, C2- to C30-olefins, styrene, C1- to C3-alkylstyrenes, C1- to C28-alkyl vinyl ethers, vinyl esters of saturated C1- to C8- carboxylic acids or mixtures of units of these monomers and (b) 50 to 1 mol% of units of amides of monoethylenically unsaturated C3- to C8-carboxylic acids with amide groups of the structure … … in which R = C8- to C28- alkyl, … … R , R = H, CH3, C2H5 R = C1- to C28-alkyl, n = 2 to 100 and R = H, R have K values of 8 to 200, or of salts of these copolymers, as additive to liquid detergent compositions in an amount of 0.1 to 20% by weight and aqueous liquid detergent compositions which contain these copolymers.

    7.
    发明专利
    未知

    公开(公告)号：DE58906888D1

    公开(公告)日：1994-03-17

    申请号：DE58906888

    申请日：1989-10-21

    Applicant: BASF AG

    Inventor： DIESSEL PAUL ,  PERNER JOHANNES DR ,  DENZINGER WALTER ,  HARTMANN HEINRICH DR ,  RAUBENHEIMER HANS-JUERGEN

    IPC: C08F8/14 ,  C08L67/00 ,  C11D3/37

    Abstract: The use of partially esterified copolymers which can be obtained by copolymerisation of (a) at least one C4- to C28-olefin and (b) ethylenically unsaturated dicarboxylic anhydrides with 4 to 8 C atoms in the molar ratio 1:1 and subsequent partial esterification of the copolymers with reaction products of (A) C1- to C30-alcohols, C8- to C22-fatty acids, C1- to C12-alkylphenols or secondary C2- to C30-amines with (B) at least one C2- to C4-alkylene oxide or tetrahydrofuran in the molar ratio (A):(B) of 1:2 to 50 and hydrolysis of the anhydride groups of the copolymers to carboxyl groups, where the partial esterification of the copolymers is continued until more than 5 to 50% of the carboxyl groups in the copolymers are esterified, as additive to liquid detergent compositions in an amount of 0.1 to 20% by weight and liquid detergent compositions which contain the partially esterified copolymers.

    9.
    发明专利
    未知

    公开(公告)号：DE3829829A1

    公开(公告)日：1990-03-22

    申请号：DE3829829

    申请日：1988-09-02

    Applicant: BASF AG

    Inventor： WIDDER RUDI DR ,  GOUSETIS CHARALAMPOS DR ,  PERNER JOHANNES DR ,  WOLF HELMUT ,  BOCHNITSCHEK WERNER DR ,  OFTRING ALFRED DR

    IPC: C07C227/12 ,  C07C229/22

    Abstract: Preparation of the trisodium salt of isoserine-N,N-diacetic acid (I) by reaction of acrylonitrile with aqueous hydrogen peroxide to give glycidamide (II) and further reaction of II with the disodium salt of iminodiacetic acid (III) to give I, by carrying out the process continuously and, in it, successively a) reacting together acrylonitrile and aqueous hydrogen peroxide at pH 7-8 and 30-60 DEG C, b) removing unreacted acrylonitrile by distillation, c) passing the reaction mixture over a solid hydrogen peroxide-decomposing catalyst, d) reacting the aqueous solution of II, obtained in this way, with III at pH 7-9 and 40-90 DEG C, e) reacting the resulting solution with a basic sodium compound at pH 9-14 and 60-95 DEG C, f) removing the ammonia which is produced by distillation and g) if desired, working up the aqueous solution of I, obtained in this way, in a manner known per se to give solid I.

Patent Agency Ranking