公开(公告)号：DE3783313D1

公开(公告)日：1993-02-11

申请号：DE3783313

申请日：1987-10-16

Applicant: BASF AG

Inventor： BARTHOLD KLAUS DR ,  BAUR RICHARD DR ,  CREMA STEFANO CARLO DR ,  LASOWSKI JUERGEN DR ,  OPPENLAENDER KNUT DR ,  HEIDE WILFRIED DR

IPC: C08F8/00 ,  C08F8/14 ,  C08F8/30 ,  C08G65/26 ,  C08G65/332 ,  C08G81/02 ,  C10G33/04

Abstract: Copolymers (I) of hydrophobic (meth)acrylic esters (II) of mixts. of polyglycols and polyglycol ethers, with hydrophilic unsatd. comonomers (III) are claimed, in which most of the free OH gps. are etherified, esterified or converted into urethane gps., and/or the acid esterification catalyst is neutralised with amine. More specifically, (II) are obtd. by reaction of (meth) acrylic acid with alkoxylates of formula R1-O-(AO)x-H (IV), using an entraining agent to remove the water. R1=residue of alcohol, alkylphenol or a condensation prod. thereof with formaldehyde or acetaldehyde; AO=ethylene-, propylene- or 1,2-butylene-oxide residue or mixts. or blocks thereof; x=5-120. Partial etherification etc. as above is carried out before or after copolymerisation; pref. amine is tert. amine; pref. (III) have the formula R2CH=CR3R4, R2=H, COOH, COOC2H4OH, COOC2H4NEt2, CONH2, CN, Ph, OCOMe, CH2OH, NHCHO, COMe, COOEt, N-imidazolyl or N-pyrrolidinonyl; R3=H or COOH; R4=H or Me; at least one of R2 or R3 is a hydrophilic gp. Wt. ratio (IV):(III) is from 300:1 to 1:50. The process is claimed as such. OH gps. can be reacted with, e.g. MeI; Ac2O, etc. using H2SO4, etc. as catalyst; or PhNCO. Amine is e.g. Et3N, Bu3N, etc. (IV) is obtd. e.g. from EtOH, Bisphenol A, nonylphenol, etc. with alkylene oxide as above. (III) is e.g. (meth)acrylic acid, maleic anhydride, vinylpyrrolidone, etc.

公开(公告)号：DE3843780A1

公开(公告)日：1990-07-05

申请号：DE3843780

申请日：1988-12-24

Applicant: BASF AG

Inventor： NIESSNER MANFRED DR ,  WICKEL STEFAN DR ,  HEIDE WILFRIED DR ,  HARTMANN HEINRICH DR

IPC: A61L15/24 ,  A61L15/60 ,  C08F2/10 ,  C08F2/20 ,  C08F2/24 ,  C08F220/04 ,  C08F220/06 ,  C08F290/00 ,  C08F290/04 ,  C08F299/02

公开(公告)号：DE3620065A1

公开(公告)日：1987-12-17

申请号：DE3620065

申请日：1986-06-14

Applicant: BASF AG

Inventor： LINHART FRIEDRICH DR ,  DEGEN HANS-JUERGEN DR ,  AUHORN WERNER ,  KROENER MICHAEL DR ,  HARTMANN HEINRICH DR ,  HEIDE WILFRIED DR

IPC: D21H17/23 ,  D21H17/34 ,  D21H17/37 ,  D21H17/47 ,  D21H17/55 ,  D21H23/76 ,  D21H3/58 ,  D21H3/82 ,  B01D21/01

Abstract: Paper, board and cardboard are produced by draining a pulp slurry in the presence of high molecular weight, water-soluble polymers of N-vinylamides as drainage aids, retention agents and flocculants. These polymers are particularly effective in a pulp slurry which has a high content of interfering substances and other phenolic compounds.

公开(公告)号：DE3267669D1

公开(公告)日：1986-01-09

申请号：DE3267669

申请日：1982-06-11

Applicant: BASF AG

Inventor： LINHART FRIEDRICH DR ,  HARTMANN JURGEN DR ,  JUNG DIETMAR DR ,  HARTMANN HEINRICH DR ,  SPOOR HERBERT DR ,  BURKERT HANS DR ,  HEIDE WILFRIED DR

IPC: C02F1/54 ,  C08F20/34 ,  D21H17/37 ,  D21H17/42 ,  D21H17/43 ,  D21H17/45 ,  D21H3/38

公开(公告)号：AT16709T

公开(公告)日：1985-12-15

申请号：AT82105110

申请日：1982-06-11

Applicant: BASF AG

Inventor： LINHART FRIEDRICH DR ,  HARTMANN JUERGEN DR ,  JUNG DIETMAR DR ,  HARTMANN HEINRICH DR ,  SPOOR HERBERT DR ,  BURKERT HANS DR ,  HEIDE WILFRIED DR

IPC: C02F1/54 ,  C08F20/34 ,  D21H3/38