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公开(公告)号:DE4317036A1
公开(公告)日:1994-11-24
申请号:DE4317036
申请日:1993-05-21
Applicant: BASF AG
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公开(公告)号:DE4214172A1
公开(公告)日:1993-11-04
申请号:DE4214172
申请日:1992-04-30
Applicant: BASF AG
Inventor: BARWICH JUERGEN DR , SCHWARTZ MANFRED DR
IPC: C08F220/54 , C08F246/00 , C08K5/07 , C09J133/06 , C08F216/36 , C08L29/12 , C08L33/24 , C08L57/04 , C09D157/04 , C09J157/04
Abstract: Soln., melt or aq. dispersion of a polymer compsn. (I)which contains olefinically unsatd. bonds contains at leastone polymer (A) contg. 0.01-10(0.5-7) wt.% monomer unit(s)CH2=CR1CON(R2)CR3R4R5 (a), up to 10 wt.% monoethylenicallyunsatd. diaryl or alkylaryl ketone(s) (b) and 80-99.9 wt.%comonomers (c); and up to 10 wt.% (based on wt. of (A)) ofpolymer (B) with monomer units (b) and/or non-monoethylenicallyunsatd. diaryl and/or alkylaryl ketones; provided that (I)contains 0.01-10 (0.2-1) wt.% of units (b) + monomer units in B.
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公开(公告)号:DE4102345A1
公开(公告)日:1992-07-30
申请号:DE4102345
申请日:1991-01-26
Applicant: BASF AG
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公开(公告)号:DE4102344A1
公开(公告)日:1992-07-30
申请号:DE4102344
申请日:1991-01-26
Applicant: BASF AG
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公开(公告)号:DE4021502A1
公开(公告)日:1992-01-16
申请号:DE4021502
申请日:1990-07-05
Applicant: BASF AG
Inventor: DOTZAUER BERNHARD DR , WISTUBA ECKEHARDT DR , SCHWARTZ MANFRED DR , PETRI ROLF , BECHERT BERTOLD
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公开(公告)号:DE3834435A1
公开(公告)日:1990-06-13
申请号:DE3834435
申请日:1988-10-10
Applicant: BASF AG
Inventor: MOENCH DIETMAR DR , STANGE ANDREAS DR , LIEBE JOERG DR , HARTMANN HEINRICH DR , MERGER FRANZ DR , SCHWARTZ MANFRED DR
Abstract: Bridged, water-soluble copolymers are obtainable by (A) copolymerization of a monomer mixture of (a) from 50 to 99 mol % of acrylamide and/or methacrylamide, (b) from 50 to 1 mol % of a monoethylenically unsaturated monomer containing actual groups and (c) from 0 to 20 mol % of monomers which differ from (a) and (b), in the presence of a polymerization initiator under conditions such that the acetal groups of the monomers (b) undergo virtually no hydrolysis, (B) hydrolysis of the acetal groups of the monomers (b), present as copolymerized units in the copolymers (A), (C) condensation of the copolymers (B) containing aldehyde groups at a pH above 5, at most to a degree such that the resulting condensates are still water-soluble and (D) stopping of the condensation reaction by adding acid until the pH reaches 3 or less, and are used as paper stock additives in papermaking for increasing the wet strength of paper.
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公开(公告)号:DE3827975A1
公开(公告)日:1990-03-01
申请号:DE3827975
申请日:1988-08-18
Applicant: BASF AG
Inventor: REHMER GERD DR , SCHWARTZ MANFRED DR , DOTZAUER BERNHARD DR
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公开(公告)号:DE59203505D1
公开(公告)日:1995-10-12
申请号:DE59203505
申请日:1992-01-09
Applicant: BASF AG
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公开(公告)号:AT127494T
公开(公告)日:1995-09-15
申请号:AT92100251
申请日:1992-01-09
Applicant: BASF AG
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公开(公告)号:DK0469295T3
公开(公告)日:1995-02-13
申请号:DK91110520
申请日:1991-06-26
Applicant: BASF AG
Inventor: DOTZAUER BERNHARD DR , WISTUBA ECKEHARDT DR , SCHWARTZ MANFRED DR , PETRI ROLF , BECHERT BERTOLD
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