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    7.
    发明专利
    未知

    公开(公告)号：FI905661A0

    公开(公告)日：1990-11-15

    申请号：FI905661

    申请日：1990-11-15

    Applicant: BASF AG

    Inventor： MOENCH DIETMAR ,  HARTMANN HEINRICH ,  FREUDENBERG ENRIQUE ,  STANGE ANDREAS

    IPC: D21H17/34 ,  D21H17/45 ,  D21H21/06 ,  D21H21/10 ,  D21H

    Abstract: PCT No. PCT/EP90/00406 Sec. 371 Date Dec. 4, 1990 Sec. 102(e) Date Dec. 4, 1990 PCT Filed Mar. 14, 1990 PCT Pub. No. WO90/11404 PCT Pub. Date Oct. 4, 1990.Paper, board and cardboard are produced by draining a paper stock in the presence of a nonhydrolyzed copolymer which contains, as polymerized units, (a) from 99 to 1 mol % of N-vinylformamide and (b) from 1 to 99 mol % of one or more water-soluble basic monomers of the formula (I) or (II) where R1 is H, CH3 or C2H5, R2, R3 and R4 are each H, CH3, C2H5 or (-CH2-CH2-O-)nH, R5 and R6 are each C1-C10-alkyl, A is C1-C6-alkylene, n is from 1 to 6 and Y(-) is an anion, in an amount of from 0.01 to 3.5% by weight, based on dry paper stock.

    PREPARATION OF STABLE WATER-IN-OIL EMULSIONS OF HYDROLYZED POLYMERS OF N-VINYLAMIDES AND THEIR USE
    8.
    发明专利
    PREPARATION OF STABLE WATER-IN-OIL EMULSIONS OF HYDROLYZED POLYMERS OF N-VINYLAMIDES AND THEIR USE 未知

    公开(公告)号：CA2004144A1

    公开(公告)日：1990-06-20

    申请号：CA2004144

    申请日：1989-11-29

    Applicant: BASF AG

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

    IPC: C08F2/32 ,  C08F8/12 ,  C08F26/00 ,  C08F26/02 ,  C09K23/42 ,  D21F1/66 ,  D21H17/34 ,  C08L33/24 ,  D21H17/37

    Abstract: o.z. 0050/40418 Stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides of the formula (I) where R and R1 are each H or C1-C6-alkyl are prepared by polymerization of a compound of the formula I alone or as a mixture with other monoethylenically unsaturated monomers, in the form of a water-in-oil emulsion, to give a water-in-oil polymer emulsion, and subsequent hydrolysis of the polymer, by a process in which hydrolysis of the polymer in the form of the water-in-oil polymer emulsion is carried out in the presence of an acid or base and of from 1 to 30% by weight, based on the polymer, of an emulsifier which is obtainable by (A) reacting a C10-C22-fatty alcohol with epichlorohydrin in a molar ratio of from 1 : 0.5 to 1 : 1.5 to give a glycidyl ether, (B) reacting the glycidyl ether with (1) a saturated C2 C6-alcohol containing from 2 to 6 OH groups or (2) its monoether with a C10-C22-fatty alcohol, in a molar ratio of glycidyl ether to (1) or (2) of from 1 : 0.5 to 1 : 6, in the presence of an acid or base, and (C) alkoxylating the reaction product from (B) with one or more C2-C4-alkylene oxides in a molar ratio of from 1 : 1 to 1 : 6. The polymer emulsions obtainable in this manner are used as drainage aids, retention aids and flocculants in the making of paper and paper products.

    9.
    发明专利
    未知

    公开(公告)号：DE4007312C2

    公开(公告)日：2000-04-27

    申请号：DE4007312

    申请日：1990-03-08

    Applicant: BASF AG

    Inventor： MOENCH DIETMAR ,  KROENER MICHAEL ,  FREUDENBERG ENRIQUE ,  HARTMANN HEINRICH ,  SENDHOFF NORBERT

    IPC: C08F2/10 ,  C08F8/12 ,  C08F26/00 ,  C08F26/02 ,  D21H21/06 ,  D21H21/10 ,  D21H21/12 ,  D21H21/18

    Abstract: N-vinylformamide is polymerized with or without other water-soluble monoethylenically unsaturated monomers and with or without water-insoluble monoethylenically unsaturated monomers in not less than 30% strength by weight aqueous monomer solutions in the presence of a polymerization initiator at not more than 150 degrees C. in a kneader by a method in which the polymerization is carried out to such an extent that the initially formed water-containing polymer gel disintegrates into fine particles and the finely divided polymer obtainable in this manner is hydrolyzed, preferably in the kneader, so that not less than 0.1 mol % of the N-vinylformamide units present in the polymer are converted into vinylamine units. The polymers obtainable in this manner dissolve readily in water. The aqueous solutions are used, for example, in papermaking and tertiary oil production.

    10.
    发明专利
    未知

    公开(公告)号：DE59001550D1

    公开(公告)日：1993-07-01

    申请号：DE59001550

    申请日：1990-03-14

    Applicant: BASF AG

    Inventor： MOENCH DIETMAR ,  HARTMANN HEINRICH ,  FREUDENBERG ENRIQUE ,  STANGE ANDREAS

    IPC: D21H17/34 ,  D21H17/45 ,  D21H21/06 ,  D21H21/10

    Abstract: PCT No. PCT/EP90/00406 Sec. 371 Date Dec. 4, 1990 Sec. 102(e) Date Dec. 4, 1990 PCT Filed Mar. 14, 1990 PCT Pub. No. WO90/11404 PCT Pub. Date Oct. 4, 1990.Paper, board and cardboard are produced by draining a paper stock in the presence of a nonhydrolyzed copolymer which contains, as polymerized units, (a) from 99 to 1 mol % of N-vinylformamide and (b) from 1 to 99 mol % of one or more water-soluble basic monomers of the formula (I) or (II) where R1 is H, CH3 or C2H5, R2, R3 and R4 are each H, CH3, C2H5 or (-CH2-CH2-O-)nH, R5 and R6 are each C1-C10-alkyl, A is C1-C6-alkylene, n is from 1 to 6 and Y(-) is an anion, in an amount of from 0.01 to 3.5% by weight, based on dry paper stock.

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