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    44.
    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.

    45.
    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.

    46.
    发明专利
    未知

    公开(公告)号：DE4237439A1

    公开(公告)日：1994-05-11

    申请号：DE4237439

    申请日：1992-11-06

    Applicant: BASF AG

    Inventor： HARTMANN HEINRICH DR ,  DENZINGER WALTER ,  KROENER MICHAEL DR ,  NILZ CLAUDIA DR

    IPC: C08F8/00 ,  B01D15/04 ,  B01J20/26 ,  B01J39/20 ,  C08F226/02 ,  C08F26/02 ,  C08L39/02 ,  C08J5/20 ,  B01J20/30 ,  B01D15/00 ,  C02F1/28 ,  C02F1/62 ,  C02F1/42

    Abstract: Insoluble, slightly-swelling polymers containing amino groups obtainable from popcorn polymers which contain units of structure (I), in which R, R = H or C1 to C4 alkyl, by the separation of the R-CO- group from at least 2 % of the monopolymerised units of structure (I) with the formation of units of structure (II), process for producing the amino group-containing popcorn polymers by the polymerisation of N-vinyl carboxylic acid amides and possibly other monoethylenically unsaturated monomers copolymerisable therewith containing 0.1 to 10 % wt. in relation to the monomers used in polymerisation of an at least two-ethylenically unsaturated unconjugated double-bond-containing compound as the cross-linking agent with the exclusion of oxygen, and polymerisation initiators to form popcorn polymers and the separation of formyl groups from at least 2 % of the polymerised N-vinyl carboxylic acid amides and use of the insoluble, slightly-swelling polymers with amino groups as an ion exchangers or adsorber resins for metal ions.

    47.
    发明专利
    未知

    公开(公告)号：DE59001077D1

    公开(公告)日：1993-04-29

    申请号：DE59001077

    申请日：1990-12-13

    Applicant: BASF AG

    Inventor： FIKENTSCHER ROLF DR ,  KROENER MICHAEL DR

    IPC: B01J31/02 ,  B01J31/04 ,  C07B61/00 ,  C07C253/30 ,  C07C255/29

    Abstract: Process for the preparation of alpha -formylaminonitriles of the general formula I … … in which the radicals R and R represent hydrogen, or hydrogen and aliphatic or heteroaliphatic radicals which have 1 to 10, cycloaliphatic or heterocycloaliphatic radicals which have 3 to 6, araliphatic radicals which have 7 to 12, heteroaraliphatic radicals which have 4 to 12, aromatic radicals which have 6 to 10, or heteroaromatic radicals which have 3 to 10, carbon atoms and which are unsubstituted or substituted by substituents which are inert under the reaction conditions, by reacting cyanohydrins of the general formula II … … with formamide III … … in the presence of acids, by adding at least one ammonium salt to the reaction mixture.

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