Bayer Aktiengesellschaft

Other

Bayer Corporation

Fritz Puchner

Joachim Konig

Joachim Probst

Jurgen Reiners

Hans-Josef Laas

Reinhard Halpaap

Helmut Reiff

Bruno Bomer

Harro Traubel

Heinz Baumgen

Rolf Richter

Roger Nyssen

Joachim K&ouml;nig

Heinrich Alberts

Ulrich Feldhues

Gunter Sackmann

Horst Nickel

Michael Muller

Udo Eckstein

Karl-Rudolf Gassen

Karin Hassenruck

Karlheinrich Meisel

Erich Kramer

Uwe Vogt

Karin Hassenr&uuml;ck

Eckhard Wenderoth

Horst Zwick

Herbert Wigger

Dirk Pfutzenreuter

J&uuml;rgen Reiners

Karl Leiritz

Dirk Pf&uuml;tzenreuter

Matthias K&ouml;cher

Jurgens Reiners

The invention relates to a novel process for the preparation of polycondensate solutions based on polyamidoamine/epichlorohydrin resins that gives products having a very low content of organic chlorine compounds, in particular a 1,3-dichlorophenol-2-propanol content of <0.1%, in combination with high activity and good shelf-life.

Wet-strength agent with low DCP content

Paper coating slips having high whiteness, high greying limit and high lightfastness can be prepared with the aid of whitened finely divided plastics.

Optically brightened plastics for optically brightening paper-coating compounds and paper-coating compounds optically brightened in this manner

The invention relates to aqueous pigment preparation containing an ionic alkoxylated styrene-phenol condensate or a mixture thereof with a hydroxy-terminated alkoxylated styrene-phenol condensate.

Pigment preparations useful for ink-jet printing

The present invention relates to a method for ink-jet printing with a printing ink containing a pigment preparation containing

The invention relates to a new process for the preparation of cellulose-containing material provided with a dry-strength and wet-strength finish and/or sized, characterised in that the cellulose-containing material is treated with a water-dispersible polyisocyanate mixture (I), which contains tertiary amino and/or ammonium groups, optionally polyether units and optionally hydrophobic groups.

Chlorine-free multifunctional resins for paper finishing

The invention relates to a new process for the preparation of cellulose-containing material provided with a dry-strength and wet-strength finish and/or sized, characterized in that the cellulose-containing material is treated with a water-dispersible polyisocyanate mixture (I), which contains tertiary amino and/or ammonium groups, optionally polyether units and optionally hydrophobic groups.

The new process for the preparation of polycondensates from polyamidoamines, epichlorohydrin and if appropriate polyamines, unreacted epichlorohydrin being removed by passing an inert gas through the reaction mixture, produces salt-free reaction products which have very low organic chlorine contents and at the same time very low values for dichloropropanol, chloropropanediol and epichlorohydrin, and are excellently suitable as auxiliaries for paper and textiles.

Process for the preparation of polycondensates

Water-soluble crosslinkable compounds obtainable by reaction of reactive products which contain halogenohydrin groups and have been obtained by reacting polyamines and epihalogenohydrin or 1,3-dihalogeno-2-hydroxy-propane with inorganic bases and subsequently reacting the resulting products with inorganic acids and/or organic acids, can be used as pigment binders and/or crosslinking agents in textile printing pastes.

Pigment printing on fibre materials

The new vinyl polymer dispersions are obtainable by free radical polymerisation of olefinically unsaturated monomers in the presence of a cationic polyamidoamine which has been rendered hydrophobic, and can be used as sizing agents for paper which are distinguished, in particular, by their shear, electrolyte, heat and storage stability.

Process for sizing paper

Emulsion polymers which are prepared by free-radical polymerisation of monomers in the presence of

Paper size

The invention relates to the preparation of concentrated solutions of azo dyestuffs containing ionic groups, by precipitating during the diazotization and/or coupling reaction and/or after the coupling reaction the foreign ions which lower the solubility of the dyestuffs and separating off these ions as sparingly soluble salts. In this way dyestuff solutions which are stable to storage at room temperature and have a dyestuff content of 10 to 50 percent by weight are obtained.

Process for the preparation of concentrated dyestuff solutions

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Cologne, Germany

Fritz Puchner