Graft polymers of natural substances containing saccharide structures or derivatives thereof and ethylenically unsaturated compounds and their use.

    公开(公告)号:DE4127733A1

    公开(公告)日:1993-02-25

    申请号:DE4127733

    申请日:1991-08-22

    Applicant: BASF AG

    Abstract: (1) Graft polymers (I) obtainable by polymerisation of (A) monomers or monomer mixts. comprising (A1) 10-100 % (all pts. wt.) N-vinylcarboxylic amides. CH2=CH-N(R2)C(O)R' (1), where R1, R2 = H or 1-6 C alkyl (A2) 0-90 % other monoethylenically unsatd., carboxylic gp.-free monomer copolymerisation with (A1) (A3) 0-5 % monomer with at least 2 ethylenically unsatd., non-conjugated double bonds in mol. in presence of (B) mono-, oligo-, or poly-saccharide; oxidatively, hydrolytically, or enzymatically degraded polysaccharide; oxidatively-hydrolytically or oxidatively-enzymatically degraded polysaccharide; chemically modified mono-, oligo-, or poly-sacchardie, or mixt. of these in ratio (A):(B) = 95-20:5-80 and op. subsequent splitting off of gp. -C(:O)R1 from polymerised monomers (A) of (I) with formation of units -CH2-CNHR2H- are claimed. (2) Also claimed are (I) obtainable by process wherein mixt. of 1-99 % N-vinylformamide (II) and 99-1 % vinyl acetate (III) is used as (A), 2-100 % formyl gps. of polymerised (II) are split off with formation of units -CH2-C(NH2)H- (3) and 2-100 % acetate gps. of polymerisated (III) and split off with formation of units -CH20C(OH)H- (4). USE/ADVANTAGE - Dry- and wet-stength agents in prepn. of paper, carboard, and paperboard, (I), prepd. partly with renewable raw materials, are less expensi

    85.
    发明专利
    未知

    公开(公告)号:DK0884945T3

    公开(公告)日:2002-07-15

    申请号:DK97908173

    申请日:1997-03-04

    Applicant: BASF AG

    Abstract: The use of polymers (I) as biocides is new, where (I) comprises: (a) 0.1-100 mol. % vinylamine (VA) or ethyleneimine units; (b) 0-99.9 mol.% units derived from at least one monomer selected from N-vinylcarboxamides of formula CH2=CH-N(R1)-CO-R2 (II), vinyl formate, vinyl acetate, vinyl propionate, vinyl alcohol, (1-6C) alkyl-vinyl ethers, monoethylenically unsaturated 3-8C carboxylic acids, or their esters, nitriles, amides and anhydrides, N-vinylurea, N-vinylimidazoles and N-vinylimidazolines; and (c) 0-5 mol.% units derived from monomers with at least two ethylenically unsaturated double bonds. The sum of (a)-(c) is 100 mol.%. R1, R2 = H or 1-6C alkyl.

    88.
    发明专利
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    公开(公告)号:DE59703956D1

    公开(公告)日:2001-08-09

    申请号:DE59703956

    申请日:1997-02-20

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/00801 Sec. 371 Date Aug. 31, 1998 Sec. 102(e) Date Aug. 31, 1998 PCT Filed Feb. 20, 1997 PCT Pub. No. WO97/31518 PCT Pub. Date Sep. 4, 1997Partially hydrolyzed polymers of N-vinylcarboxamides obtainable by sole polymerization of N-vinylcarboxamides of the formula where R1 and R2 are each hydrogen or C1- to C6-alkyl, and elimination from the polymers of from 0.5 to 95 mol % of the groups of the formula where R1 is hydrogen or C1- to C6-alkyl, can be used as paper, paperboard and cardboard dry strength enhancers.

    89.
    发明专利
    未知

    公开(公告)号:DE59606319D1

    公开(公告)日:2001-02-15

    申请号:DE59606319

    申请日:1996-07-09

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP96/02991 Sec. 371 Date Jan. 21, 1998 Sec. 102(e) Date Jan. 21, 1998 PCT Filed Jul. 9, 1996 PCT Pub. No. WO97/04014 PCT Pub. Date Feb. 6, 1997Graft polymers are obtainable by free radical polymerization of (A) monomers or monomer mixtures comprising (a) from 1 to 100% by weight of N-vinylcarboxamides of the formula where R1 and R2 are each H or C1-C6-alkyl, (b) from 0 to 99% by weight of other monoethylenically unsaturated monomers copolymerizable with the monomers (a) and (c) from 0 to 5% by weight of monomers having at least two ethylenically unsaturated, nonconjugated double bonds in the molecule, in the presence of (B) polymers which contain units of vinyl esters of saturated C1-C4-carboxylic acids and/or vinyl alcohol units, or of mixtures which contain these polymers and polymers having at least 3 alkylene oxide units or polytetrahydrofuran, in a weight ratio (A):(B) of from 95:5 to 10:90 and, if required, subsequent elimination of the group from the polymerized monomers (I) of the graft polymer with formation of units of the formula and the graft polymers described above are used in the production of paper, board and cardboard as dry and wet strength agents, as retention and drainage aids and as promoters in diketene sizing and as starch cationization agents, as dispersants for pigments and as creping assistants in the production of tissue papers.

    90.
    发明专利
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    公开(公告)号:DE59701734D1

    公开(公告)日:2000-06-21

    申请号:DE59701734

    申请日:1997-08-21

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP97/04545 Sec. 371 Date Mar. 11, 1999 Sec. 102(e) Date Mar. 11, 1999 PCT Filed Aug. 21, 1997 PCT Pub. No. WO98/11145 PCT Pub. Date Mar. 19, 1998An insoluble, only slight swellable, polymer having modified amino groups, which contain units of the formulae: or both (I) and (II), wherein R1, R2, R3 and Me are as defined herein.

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