公开(公告)号：FI884421A0

公开(公告)日：1988-09-27

申请号：FI884421

申请日：1988-09-27

Applicant: BASF AG

Inventor： HAHN ERWIN ,  HENNING GEORG ,  MIELKE MANFRED ,  DEGEN HANS-JUERGEN ,  PFOHL SIGBERG

IPC: D21H17/34 ,  D21H17/37 ,  D21H17/49 ,  D21H17/55 ,  D21H17/56 ,  D21H21/28 ,  D21H23/04 ,  D21H

Abstract: Process for the bulk colouring of paper with pigments and fixing agents, where the pigment and the fixing agent are added simultaneously to the paper mass to be coloured and a cationic fixing agent is used as the fixing agent in a quantity of 0.01 to 3.0% by weight, based on the dry paper mass to be coloured.

公开(公告)号：DE3534273A1

公开(公告)日：1987-04-02

申请号：DE3534273

申请日：1985-09-26

Applicant: BASF AG

Inventor： PFOHL SIGBERG ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  DENZINGER WALTER

IPC: C08F8/12 ,  C08F16/16 ,  C08F18/02 ,  C08F20/52 ,  C08F26/00 ,  C08F26/06 ,  C08F216/16 ,  C08F216/18 ,  C08F218/02 ,  C08F218/04 ,  C08F218/08 ,  C08F218/10 ,  C08F220/00 ,  C08F220/02 ,  C08F220/10 ,  C08F220/18 ,  C08F220/42 ,  C08F220/56 ,  C08F226/02 ,  C08F226/10 ,  D21H17/34 ,  D21H17/36 ,  D21H17/37 ,  D21H17/45 ,  D21H21/18 ,  D21H3/60

Abstract: Water-soluble copolymers containing copolymerized vinylamine units are prepared by copolymerizing (a) from 95 to 10 mol % of N-vinylformamide and (b) from 5 to 90 mol % of an ethylenically unsaturated monomer from the group consisting of vinyl acetate, vinyl propionate, C1-C4-alkyl vinyl ethers, the esters, nitriles and amides of acrylic acid and methacrylic acid and N-vinylpyrrolidone, and then eliminating from 30 to 100 mol % of the formyl groups from the copolymer. Preferred copolymers are copolymers of N-vinylformamide and vinyl acetate, in which from 30 to 100 mol % of the monomer units are hydrolyzed. The copolymers are used in papermaking to increase the dry strength and wet strength of the paper.

公开(公告)号：FI863755A

公开(公告)日：1987-03-27

申请号：FI863755

申请日：1986-09-17

Applicant: BASF AG

Inventor： PFOHL SIGBERG ,  KROENER MICHAEL ,  HARTMANN HEINRICH ,  DENZINGER WALTER

IPC: C08F8/12 ,  C08F16/16 ,  C08F18/02 ,  C08F20/52 ,  C08F26/00 ,  C08F26/06 ,  C08F216/16 ,  C08F216/18 ,  C08F218/02 ,  C08F218/04 ,  C08F218/08 ,  C08F218/10 ,  C08F220/00 ,  C08F220/02 ,  C08F220/10 ,  C08F220/18 ,  C08F220/42 ,  C08F220/56 ,  C08F226/02 ,  C08F226/10 ,  D21H17/34 ,  D21H17/36 ,  D21H17/37 ,  D21H17/45 ,  D21H21/18 ,  C08F

Abstract: Water-soluble copolymers containing copolymerized vinylamine units are prepared by copolymerizing (a) from 95 to 10 mol % of N-vinylformamide and (b) from 5 to 90 mol % of an ethylenically unsaturated monomer from the group consisting of vinyl acetate, vinyl propionate, C1-C4-alkyl vinyl ethers, the esters, nitriles and amides of acrylic acid and methacrylic acid and N-vinylpyrrolidone, and then eliminating from 30 to 100 mol % of the formyl groups from the copolymer. Preferred copolymers are copolymers of N-vinylformamide and vinyl acetate, in which from 30 to 100 mol % of the monomer units are hydrolyzed. The copolymers are used in papermaking to increase the dry strength and wet strength of the paper.

公开(公告)号：AU553980B2

公开(公告)日：1986-07-31

申请号：AU5489880

申请日：1980-01-24

Applicant: BASF AG

Inventor： HARTMANN JUERGEN ,  STEDEFEDER JOACHIM ,  DENZINGER WALTER ,  PFOHL SIGBERG

IPC: D21H19/20 ,  D21H17/43 ,  D21H1/38

Abstract: A process for the manufacture of paper having a high dry strength and a low wet strength, by treating the surface of the paper with an aqueous solution of an alkali metal and/or alkaline earth metal salt of a polymer of (a) from 91 to 100% by weight of acrylic acid and/or methacrylic acid and (b) from 0 to 9% by weight of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, vinyl acetate, maleic anhydride, diisobutylene, an ester of acrylic acid and/or an ester of methacrylic acid, which has a viscosity of from 5 to 100 mPas in 2% strength aqueous solution at 20 DEG C., and drying the impregnated paper. The polymer is generally employed in an amount of from 1 to 4% by weight, based on dry paper, and increases the dry strength of the paper without substantially increasing the wet strength.

公开(公告)号：NO153460B

公开(公告)日：1985-12-16

申请号：NO783133

申请日：1978-09-15

Applicant: BASF AG

Inventor： STEDEFEDER JOACHEIM ,  GUENDER WOLF ,  PFOHL SIGBERG

IPC: D21H19/20 ,  D21H17/43 ,  D21H1/38 ,  D21H3/38

公开(公告)号：FI64964B

公开(公告)日：1983-10-31

申请号：FI800072

申请日：1980-01-10

Applicant: BASF AG

Inventor： HARTMANN JUERGEN ,  STEDEFEDER JOACHIM ,  DENZINGER WALTER ,  PFOHL SIGBERG

IPC: D21H19/20 ,  D21H17/43 ,  D21H3/38

Abstract: A process for the manufacture of paper having a high dry strength and a low wet strength, by treating the surface of the paper with an aqueous solution of an alkali metal and/or alkaline earth metal salt of a polymer of (a) from 91 to 100% by weight of acrylic acid and/or methacrylic acid and (b) from 0 to 9% by weight of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, vinyl acetate, maleic anhydride, diisobutylene, an ester of acrylic acid and/or an ester of methacrylic acid, which has a viscosity of from 5 to 100 mPas in 2% strength aqueous solution at 20 DEG C., and drying the impregnated paper. The polymer is generally employed in an amount of from 1 to 4% by weight, based on dry paper, and increases the dry strength of the paper without substantially increasing the wet strength.

公开(公告)号：FI812880L

公开(公告)日：1982-04-23

申请号：FI812880

申请日：1981-09-15

Applicant: BASF AG

Inventor： PFOHL SIGBERG ,  WEINLE WERNER ,  ZEHNER PETER

IPC: D21H17/51 ,  D21H21/20 ,  D21H

公开(公告)号：NO800183L

公开(公告)日：1980-07-28

申请号：NO800183

申请日：1980-01-25

Applicant: BASF AG

Inventor： HARTMANN JUERGEN ,  STEDEFEDER JOACHIM ,  DENZINGER WALTER ,  PFOHL SIGBERG

IPC: D21H19/20 ,  D21H17/43 ,  D21H

Abstract: A process for the manufacture of paper having a high dry strength and a low wet strength, by treating the surface of the paper with an aqueous solution of an alkali metal and/or alkaline earth metal salt of a polymer of (a) from 91 to 100% by weight of acrylic acid and/or methacrylic acid and (b) from 0 to 9% by weight of acrylonitrile, methacrylonitrile, acrylamide, methacrylamide, vinyl acetate, maleic anhydride, diisobutylene, an ester of acrylic acid and/or an ester of methacrylic acid, which has a viscosity of from 5 to 100 mPas in 2% strength aqueous solution at 20 DEG C., and drying the impregnated paper. The polymer is generally employed in an amount of from 1 to 4% by weight, based on dry paper, and increases the dry strength of the paper without substantially increasing the wet strength.

公开(公告)号：NO800183A

公开(公告)日：1980-07-28

申请号：NO800183

申请日：1980-01-25

Applicant: BASF AG

Inventor： HARTMANN JUERGEN ,  STEDEFEDER JOACHIM ,  DENZINGER WALTER ,  PFOHL SIGBERG

IPC: D21H19/20 ,  D21H17/43 ,  D21H

CPC classification number: D21H17/43 ,  Y10T428/31895 ,  Y10T428/31906

公开(公告)号：AU7760675A

公开(公告)日：1976-07-29

申请号：AU7760675

申请日：1975-01-24

Applicant: BASF AG

Inventor： HOFFMANN WERNER ,  HIMMELE WALTER ,  PAUST JOACHIM ,  FRANUBERG KARL VON ,  SIEGEL HARDO ,  PFOHL SIGBERG

IPC: B01D9/02 ,  C07B31/00 ,  C07B57/00 ,  C07C51/00 ,  C07C59/105 ,  C07C67/00 ,  C07C209/00 ,  C07C209/26 ,  C07C211/19 ,  C07D307/33 ,  C07C87/06 ,  C07D5/06

Abstract: A process for resolving racemic alpha -hydroxy- beta , beta -dimethyl- gamma -butyrolactone, referred to as D,L-pantolactone, into its optical antipodes, based on the separation of diastereomeric salts of D,L-pantoic acid ( alpha , gamma -dihydroxy- beta , beta -dimethylbutyric acid), produced from D,L-pantolactone, by means of (-)-3-aminomethylpinane, (+)-3-aminomethylpinane or one of their acid addition salts, as a new resolving agent.