中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

23 records (took 0.021 seconds)

    1.
    发明专利
    未知

    公开(公告)号：ES2051973T3

    公开(公告)日：1994-07-01

    申请号：ES89122748

    申请日：1989-12-09

    Applicant: BASF AG

    Inventor： HARTMANN HEINRICH DR ,  DENZINGER WALTER ,  KROENER MICHAEL DR ,  SENDHOFF NORBERT DR ,  FREUDENBERG ENRIQUE DR

    IPC: C08F2/32 ,  C08F8/12 ,  C08F26/00 ,  C08F26/02 ,  C09K23/42 ,  D21F1/66 ,  D21H17/34

    Abstract: Process for preparing stable water-in-oil emulsions of hydrolysed polymers of N-vinylamides of the formula in which R and R denote H or C1-C6-alkyl, by polymerising compounds of the formula I, alone or mixed with other monoethylenically unsaturated monomers, in the form of water-in-oil emulsions to give water-in-oil polymer emulsions, and subsequently hydrolysing the polymers, the hydrolysis of the polymers in the form of water-in-oil polymer emulsions being carried out in the presence of acids or bases and from 1 to 30% by weight, based on the polymers, of emulsifiers which are obtainable by reacting (A) C10- to C22-fatty alcohols with epichlorohydrin in the molar ratio 1:0.5 to 1:1.5 to give glycidyl ethers, (B) reacting the glycidyl ethers with (1) saturated C2- to C6-alcohols containing 2 to 6 OH groups or (2) monoethers thereof with C10- to C22-fatty alcohols, in the glycidyl ether:(1) or (2) molar ratio of from 1:0.5 to 6, in the presence of acids or bases, and (C) alkoxylating the reaction products from (B) using at least one C2- to C4-alkylene oxide in the molar ratio 1:1 to 6. The polymer emulsions obtainable in this way are used as dewatering, retention and flocculating agents in the production of paper and paper products.

    2.
    发明专利
    未知

    公开(公告)号：DE58907576D1

    公开(公告)日：1994-06-01

    申请号：DE58907576

    申请日：1989-12-09

    Applicant: BASF AG

    Inventor： HARTMANN HEINRICH DR ,  DENZINGER WALTER ,  KROENER MICHAEL DR ,  SENDHOFF NORBERT DR ,  FREUDENBERG ENRIQUE DR

    IPC: C08F2/32 ,  C08F8/12 ,  C08F26/00 ,  C08F26/02 ,  C09K23/42 ,  D21F1/66 ,  D21H17/34

    Abstract: Process for preparing stable water-in-oil emulsions of hydrolysed polymers of N-vinylamides of the formula in which R and R denote H or C1-C6-alkyl, by polymerising compounds of the formula I, alone or mixed with other monoethylenically unsaturated monomers, in the form of water-in-oil emulsions to give water-in-oil polymer emulsions, and subsequently hydrolysing the polymers, the hydrolysis of the polymers in the form of water-in-oil polymer emulsions being carried out in the presence of acids or bases and from 1 to 30% by weight, based on the polymers, of emulsifiers which are obtainable by reacting (A) C10- to C22-fatty alcohols with epichlorohydrin in the molar ratio 1:0.5 to 1:1.5 to give glycidyl ethers, (B) reacting the glycidyl ethers with (1) saturated C2- to C6-alcohols containing 2 to 6 OH groups or (2) monoethers thereof with C10- to C22-fatty alcohols, in the glycidyl ether:(1) or (2) molar ratio of from 1:0.5 to 6, in the presence of acids or bases, and (C) alkoxylating the reaction products from (B) using at least one C2- to C4-alkylene oxide in the molar ratio 1:1 to 6. The polymer emulsions obtainable in this way are used as dewatering, retention and flocculating agents in the production of paper and paper products.

    9.
    发明专利
    未知

    公开(公告)号：DE3842820A1

    公开(公告)日：1990-06-28

    申请号：DE3842820

    申请日：1988-12-20

    Applicant: BASF AG

    Inventor： HARTMANN HEINRICH DR ,  DENZINGER WALTER ,  KROENER MICHAEL DR ,  SENDHOFF NORBERT DR ,  FREUDENBERG ENRIQUE DR

    IPC: C08F2/32 ,  C08F8/12 ,  C08F26/00 ,  C08F26/02 ,  C09K23/42 ,  D21F1/66 ,  D21H17/34

    Abstract: Process for preparing stable water-in-oil emulsions of hydrolysed polymers of N-vinylamides of the formula in which R and R denote H or C1-C6-alkyl, by polymerising compounds of the formula I, alone or mixed with other monoethylenically unsaturated monomers, in the form of water-in-oil emulsions to give water-in-oil polymer emulsions, and subsequently hydrolysing the polymers, the hydrolysis of the polymers in the form of water-in-oil polymer emulsions being carried out in the presence of acids or bases and from 1 to 30% by weight, based on the polymers, of emulsifiers which are obtainable by reacting (A) C10- to C22-fatty alcohols with epichlorohydrin in the molar ratio 1:0.5 to 1:1.5 to give glycidyl ethers, (B) reacting the glycidyl ethers with (1) saturated C2- to C6-alcohols containing 2 to 6 OH groups or (2) monoethers thereof with C10- to C22-fatty alcohols, in the glycidyl ether:(1) or (2) molar ratio of from 1:0.5 to 6, in the presence of acids or bases, and (C) alkoxylating the reaction products from (B) using at least one C2- to C4-alkylene oxide in the molar ratio 1:1 to 6. The polymer emulsions obtainable in this way are used as dewatering, retention and flocculating agents in the production of paper and paper products.

Patent Agency Ranking