公开(公告)号：DE19607674A1

公开(公告)日：1997-09-04

申请号：DE19607674

申请日：1996-02-29

Applicant: BASF AG

Inventor： NIESSNER MANFRED DR ,  NILZ CLAUDIA DR ,  UTECHT JENS DR ,  RUEBENACKER MARTIN DR ,  SCHUHMACHER RUDOLF DR

IPC: C08F8/12 ,  C08F26/02 ,  D21H17/34 ,  D21H17/37 ,  D21H17/45 ,  D21H21/18

Abstract: Proposed is the use, as agents for increasing the dry strength of paper, card and cardboard, of partially hydrolysed polymers of N-vinyl carboxylic acid amides obtained by the homopolymerization of N-vinyl carboxylic acid amides of the formula (I) in which R and R are H or C1-C6 alkyl and by splitting off 0.5 to 95 mole % of the groups of the formula (II) in which R is H or C1-C6 alkyl.

公开(公告)号：DE19526626A1

公开(公告)日：1997-01-23

申请号：DE19526626

申请日：1995-07-21

Applicant: BASF AG

Inventor： DENZINGER WALTER ,  RUEBENACKER MARTIN DR ,  NILZ CLAUDIA DR ,  LORENCAK PRIMOZ DR ,  MOENCH DIETMAR DR ,  SCHUHMACHER RUDOLF DR ,  STANGE ANDREAS DR

IPC: C08B37/00 ,  C08F8/12 ,  C08F261/04 ,  C08F263/02 ,  C08F283/06 ,  C08F291/00 ,  C09D7/45 ,  D21H17/34 ,  D21H17/37 ,  D21H21/10 ,  D21H21/14 ,  D21H21/16 ,  D21H21/18 ,  D21H21/20

Abstract: Graft polymers obtainable by the radically initiated polymerisation of (A) monomers or monomer mixture of (a) 1 to 100 wt.% N-vinyl carboxylic acid amides of the formula (I) in which R , R = H and C1 to C6 alkyl, (b) 0 to 99 wt.% other monoethylenically unsaturated monomers copolymerisable with the monomers (a), and (c) 0 to 5 wt.% of at least two ethylenically unsaturated monomers with unconjugated double bonds in the molecule; in the presence of (B) polymers containing units of vinyl esters of saturated C1 to C4 carboxylic acids and/or vinyl alcohol units, or mixtures containing these polymers and polymers containing at least 3 alkylene oxide units or polytetrahydrofurane; in the ratio by weight (A) : (B) of (95 to 10) : (5 to 90), possibly followed by the separation of the group (II) from the polymerised monomers (I) of the graft polymer, with the formation of units of the formula (III); process for the production of the graft polymers and use of the graft polymers described above in the production of paper, paperboard and cardboard as a dry and wet strengthening agent, as a retention and dewatering agent and as a promoter in diketene gumming and as a starch cationisation agent, as a dispersant for pigments and as a creping auxiliary in the production of tissue papers.

公开(公告)号：DE4438708A1

公开(公告)日：1996-05-02

申请号：DE4438708

申请日：1994-10-29

Applicant: BASF AG

Inventor： LINHART FRIEDRICH DR ,  STANGE ANDREAS DR ,  SCHUHMACHER RUDOLF DR ,  HARTMANN HEINRICH DR ,  DENZINGER WALTER ,  NIESSNER MANFRED DR ,  NILZ CLAUDIA DR ,  REUTHER WOLFGANG DR ,  MEIXNER HUBERT DR

IPC: C08B31/12 ,  C08B31/00 ,  C08B35/00 ,  C08G73/02 ,  C08G81/00 ,  D21H17/29 ,  D21H21/18 ,  D21H21/20 ,  C08F26/00

Abstract: In a cationic modification process for starch, starch is reacted with polymers that contain amino and/or ammonium groups in an aqueous medium at temperatures from 115 to 180 DEG C under an increased pressure and in the absence of oxidisers, polymerisation initiators and alkali. The reaction is conducted so that maximum 10% by weight starch has its molar weight reduced. Also disclosed is the use of the thus obtained reaction products as dry strength agents for paper.

公开(公告)号：ES2071391T3

公开(公告)日：1995-06-16

申请号：ES92113458

申请日：1992-08-07

Applicant: BASF AG

Inventor： WEGNER BRIGITTE DR ,  OPPENLAENDER KNUT DR ,  SCHUHMACHER RUDOLF DR ,  HOHMANN ANDREAS DR ,  DRALLE GABRIELE DR

IPC: B01J13/00 ,  C09K23/42 ,  C09K23/00 ,  D21C3/28 ,  D21D1/20 ,  D21H17/00 ,  D21H17/14 ,  D21H21/12

Abstract: In anti-foams for the paper industry, based on oil-in-water emulsions, the oil phase makes up 5 to 50 % by weight of the bulk of the emulsion and contains (a) an alcohol having at least 12 carbon atoms, fatty acid esters of alcohols having at least 22 carbon atoms and C1- to C36-carboxylic acids, distillation residues which are obtainable in the production of alcohols having a higher carbon number by oxo synthesis or by the Ziegler process and which may be alkoxylated, mixtures of the said compounds and/or (b) a fatty acid ester of C12- to C22-carboxylic acids with monohydric to trihydric C1- to C18-alcohols and, if appropriate, (c) a hydrocarbon having a boiling point above 200 DEG C or fatty acids having 12 to 22 carbon atoms in combination with (d) 1 to 80 % by weight of polyglycerol esters which can be prepared by an at least 20% esterification of polyglycerol mixtures which contain, as essential constituents, diglycerol, triglycerol, tetraglycerol and, if appropriate, more highly condensed polyglycerols, with saturated or unsaturated C12- to C36-fatty acids. i

公开(公告)号：DE4328670A1

公开(公告)日：1995-03-02

申请号：DE4328670

申请日：1993-08-26

Applicant: BASF AG

Inventor： SCHNEIDER JUERGEN DR ,  OFTRING ALFRED DR ,  FREYBERG PETER DR ,  SCHUHMACHER RUDOLF DR ,  BAUR RICHARD DR ,  POTTHOFF-KARL BIRGIT DR ,  KUD ALEXANDER DR

IPC: C11D3/12 ,  C05D9/02 ,  C05F11/00 ,  C09K3/00 ,  C11D1/10 ,  C11D3/33 ,  C11D3/34 ,  C11D7/32 ,  C11D7/34 ,  D21C9/10 ,  G03C5/305 ,  G03C7/42 ,  C05C11/00 ,  D06L1/14 ,  D06L3/02 ,  D06M11/40 ,  D06P1/647 ,  G03C5/44

公开(公告)号：DE58906723D1

公开(公告)日：1994-03-03

申请号：DE58906723

申请日：1989-04-05

Applicant: BASF AG

Inventor： SCHWALM REINHOLD DR ,  BINDER HORST ,  SCHUHMACHER RUDOLF DR

IPC: G03F7/004 ,  G03F7/039

Abstract: The invention relates to a positive radiation-sensitive composition and a process for obtaining relief images. … The radiation-sensitive composition contains… a) a water-insoluble polymeric binder which is soluble or at least dispersible in aqueous alkaline solutions, and… b) an organic compound whose solubility in an aqueous alkaline developer is increased by exposure to acid and which contains at least one acid-cleavable grouping and, in addition, a further grouping which produces a strong acid when exposed to radiation, the polymeric binder (a) consisting of a mixture of a phenolic polymer and a resin of the novolak type. … The mixture according to the invention is suitable, in particular, for producing photoresists.

公开(公告)号：DE4128084A1

公开(公告)日：1993-02-25

申请号：DE4128084

申请日：1991-08-24

Applicant: BASF AG

Inventor： KNEIP MICHAEL DR ,  SCHUHMACHER RUDOLF DR

IPC: D21C5/02 ,  D21C9/10 ,  D21H21/02

Abstract: Beta-alanine-N,N-diacetic acid (I), alkali metal or ammonium salt, is used as complex former for alkaline earth and heavy metal ions in bleaching wood pulp, mfr. of paper, and deinking of printed waste paper. Prepn. comprises reacting iminodiacetic and acrylic acids in non basic aq. medium (EP 356 972). ADVANTAGE - Improved oxidative or reductive bleaching c.f. nitrilotriacetic acid (I) amt. of waterglass (stabiliser for H2O2) may be reduced, for min. deterioration in dewatering and deposition on paper and felt of paper machine, amt. of H2O2 in deinking may be reduced, and deposition of carbonates, silicates, and phosphates is min.. In an example, 100 g mechanical wood pulp suspension (pulp consistency 20 %, all pts. wt.) was mixed thoroughly with, (on dried wt.) wood pulp, 2 % waterglass, 0.75 % aq. NaOH, 1 % H2O2, and 0.06 % (I) as Na salt and kept at 50 deg. C for 2 hrs.. Paper (surface wt. 400 g/q. m) made from the bleached pulp had whiteness 67.6 % (deg. of remission, Elrepho photometer, wavelength 457 nm( 67.6 %. C.f. process was repeated except that (I) was replaced by (II) as Na salt; whiteness of paper was 66.9%

公开(公告)号：DE3920714A1

公开(公告)日：1991-01-10

申请号：DE3920714

申请日：1989-06-24

Applicant: BASF AG

Inventor： PETER ROLAND DR ,  SCHUHMACHER RUDOLF DR ,  ALLSPACH THOMAS DR

IPC: C08G59/04 ,  C08G59/62

公开(公告)号：DE3812326A1

公开(公告)日：1989-10-26

申请号：DE3812326

申请日：1988-04-14

Applicant: BASF AG

Inventor： SCHWALM REINHOLD DR ,  BINDER HORST ,  SCHUHMACHER RUDOLF DR

IPC: G03F7/004 ,  G03F7/039

Abstract: The invention relates to a positive radiation-sensitive composition and a process for obtaining relief images. … The radiation-sensitive composition contains… a) a water-insoluble polymeric binder which is soluble or at least dispersible in aqueous alkaline solutions, and… b) an organic compound whose solubility in an aqueous alkaline developer is increased by exposure to acid and which contains at least one acid-cleavable grouping and, in addition, a further grouping which produces a strong acid when exposed to radiation, the polymeric binder (a) consisting of a mixture of a phenolic polymer and a resin of the novolak type. … The mixture according to the invention is suitable, in particular, for producing photoresists.

公开(公告)号：DE19710616A1

公开(公告)日：1998-09-17

申请号：DE19710616

申请日：1997-03-14

Applicant: BASF AG

Inventor： ETTL ROLAND DR ,  SCHUHMACHER RUDOLF DR ,  BONN JOHANN ,  REUTHER WOLFGANG DR ,  UTECHT JENS DR ,  JULIUS MANFRED DR

IPC: C08G73/02 ,  D21H17/16 ,  D21H17/17 ,  D21H17/54 ,  D21H21/16 ,  C08L39/02 ,  C08L79/04 ,  D06M13/13 ,  D06M13/192

Abstract: The invention relates to aqueous dispersions of reactive gluing agents containing 0.1 to 10 weight per cent of water-soluble or water-dispersible polymeric protective colloids which can be obtained by reacting polymers containing amino groups from the group: polymers containing vinylamine units; polyamidoamines; polyamidoamines grafted with ethylenimine - with diketenes at a weight ratio polymers:diketenes of 10000:1 to 1:3. The invention also relates to a method for producing aqueous dispersions of reactive gluing agents by homogenising said reactive gluing agents in an aqueous solution of at least one of the aforementioned protective colloids at temperatures of 20 to 90 DEG C under the effect of shear forces, and to the use of aqueous dispersions of gluing agents thus obtained as pulp sizing agents in the production of paper, board and cardboard and for hydrophobing cellulose fibers.