Bayer Aktiengesellschaft

Agfa-gevaert Ag

Miles Inc.

Agfa-gevaert Aktiengesellshcaft

Helmut Reiff

Dieter Dieterich

Harro Traubel

Hans-Josef Laas

Peter Markusch

Rudolf Hombach

Hanns I Sachs

Gunter Helling

Joachim Probst

Hans-Joachim Scholl

Joachim Konig

Jurgen Reiners

Manfred Dollhausen

Hans-Albert Ehlert

Karl-Heinz Passon

Klaus Konig

Reinhard Halpaap

Bruno Bomer

Wolfgang Himmelmann

Josef Sanders

Jurgen Schwindt

Klaus Noll

Walter Schroer

Wolfgang Wenzel

Fritz Puchner

Peter Nussbaum

Herbert Wigger

Josef Pedain

Rolf-Volker Meyer

Christian Wamprecht

Harald Blum

Gerhard Grogler

Hartmut Nefzger

Richard Kopp

Walter Meckel

Gisbert Michels

Wolfgang Henning

Josef Merten

Gunter Renner

Holger Meyborg

Dietrich Michael

Bernd Quiring

Werner Kubitza

Hermann Gruber

Hans-Ulrich Meier-Westhues

Oswald Wilmes

Gerhard Balle

Rainhard Koch

Friedrich-Wilhelm Kunitz

Werner Dietrich

Manfred Peters

Raymond Audenaert

Hanns-Peter M&uuml;ller

Jurgen Grammel

Karl-Arnold Weber

Hermann Kober

Karin Naujoks

Hans J Scholl

Otto Lorenz

Gerd-Friedrich Renner

Karl H Pisaric

Jurgen Weisser

Fritz Novotny

Matthias Gehling

Alexander Riebel

Hermann Neumaier

Ulrich Haberland

Gerhard Heinze

Karl W Schranz

J&uuml;rgen Reiners

Harro Tr&auml;ubel

Klaus Friederich

Gary Oosta

Harro Tr Aubel

Karl Berger

Manfred Schon

Guter Helling

Harald Faika

Rene Stepanek

Biologically degradable leather

The novel AOX-free process for imparting wet strength to paper with water-dispersible polyisocyanates is distinguished by a good wet-strength effect, even under mild drying conditions, and does not affect the activity of optical brighteners used at the same time.

Process for imparting wet strength to paper

The present invention relates to aqueous polyurethane dispersions having a resin solids content of 20 to 60 wt %, a viscosity at 23.degree. C. of 10 to 20,000 mPa.s and a pH of 5.5 to 8.5, wherein the polyurethane has a weight average molecular weight of 5,000 to 500,000 and a urethane group content (calculated as --NHCO--O--, molecular weight=59) of 2.5 to 15 wt %, and is based on a polyisocyanate component containing 50 to 100 wt % of 1-methyl-2,4- and/or -2,6-diisocyanatocyclohexane. The present invention also relates to aqueous binder compositions containing these aqueous polyurethane dispersions and known crosslinking resins and to the use of the aqueous polyurethane dispersions and aqueous binder compositions as binders for glass fiber sizings.

Aqueous polyurethane dispersions based on 1-methyl-2,4-and/or

The present invention relates to a process for preparing an isocyanate group-containing allophanate corresponding to formula (I) ##STR1## wherein R represents the residue obtained by removing the isocyanate groups from a (cyclo)aliphatic or araliphatic diisocyanate,

Process for the manufacture of allophanates having isocyanate groups

Bisulphite-blocked, polyether-modified polyisocyanates are outstandingly suitable, in combination with mineral tanning agents, for the tanning of leather.

Process for tanning leather

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 blocked polyisocyanate having an NCO functionality of from 2.2 to 4.5 and an average molecular weight of 800 to 25,000 and containing (1) blocked isocyanate groups corresponding to an NCO content of 5 to 20 wt. % calculated as free NCO, relative to unblocked polyisocyanate, (2) 1 to 75 meq of ionic groups per 100 g of blocked polyisocyanate, and (3) 3 to 40 wt. % of polyalkylene oxide units relative to the blocked polyisocyanate prepared by the reaction of

Water-dispersible blocked isocyanates, method of manufacture, and use

The present invention relates to tanning agents containing carbamoyl sulfonate groups that are prepared by the reaction of (A) organic polyisocyanates, (B) 0.01 to 0.4 equivalents, relative to the isocyanate groups of polyisocyanate (A), of polyether alcohols having incorporated polyalkylene oxide units (the equivalents of the polyether alcohol being based on the hydroxyl groups), wherein 40 to 100 mole-% of the polyalkylene oxide units consist of polyethylene oxide units having a sequence length of 5 to 70, (C) optionally, NCO-reactive components other than polyether polyol (B), and (D) ammonium or alkali bisulfites or disulfites.

Bisulfite-blocked polyisocyanates as tanning agents

The present invention relates to a method for textile printing with aqueous dispersions in which an organic fixing agent is crosslinked with a blocked polyisocyanate having (i) an average molecular weight of about 800 to about 25,000, (ii) a content of blocked isocyanate groups, calculated as free NCO and based on non-blocked polyisocyanate, corresponding to an NCO content of about 5 to about 20% by weight, (iii) an ionic group content of about 1 to about 75 milliequivalents per 100 g of blocked polyisocyanate, and (iv) a content of polyalkylene oxide units of about 1 to about 20% by weight, based on blocked polyisocyanate, said blocked polyisocyanate being obtained by the reaction of

Crosslinking agents for textile printing fixing agents

The present invention relates to textile printing pastes containing modified polyisocyanates, modified polycarbodiimides, or trifunctional polyepoxides as crosslinking agents for the binders present therein.

Crosslinking agents for textile printing binders

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.

Polyols are conditioned and stabilized by mixing them at 0 to 150.degree. C. with from about 0.0001 to about 1% by weight, based on the quantity of polyol, of a silylated acid corresponding to the formula:

Process for conditioning and stabilizing polyols

The present invention relates to an aqueous two-component coating composition wherein the binder contains

Coating compositions, a process for their production and their use for

Textiles can be finished in a wash- and cleaning-resistant manner by impregnation if aqueous dispersions are employed for this purpose which contain reactive copolymers and/or cocondensates having perfluoroalkyl groups and water-dispersible polyisocyanate mixtures whose NCO groups are not blocked.

Composition and process for the finishing of textiles

Growing community of inventors

Leverkusen, Germany

Helmut Reiff