Bayer Aktiengesellschaft

Basf Magnetics Gmbh

Wolf-Dieter Schroer

Henning Bachem

Janos Muszik

Carlhans Suling

Jurgen Reiners

Dieter Arlt

Manfred Jautelat

Heinz Baumgen

Ulrich Beck

Karl-Heinz Passon

Peter Mummenhoff

Georg Schroder

Joachim Probst

Gunther Boehmke

Gunter Sackmann

Udo W Hendricks

Hans Schulze

Wilfried Kortmann

Gunther Cramm

Karlhans Jakobs

Willi Schossler

Ergun Tamer

Jutta Rottger

Wilfried Kortmann, Deceased

Attila Vass

Frank Bartkowiak

Otto Benn

Guenther Kuntz

Heinz-Dieter Feuser

Juergen Sauter

Juergen Schmidt

Klaus Lesche

Ingeborg Kolb

A magnetic dispersion comprising finely divided iron power or iron alloy powder having a BET value of more than 35 m.sup.2 /g dispersed in a polymeric binder and organic solvent, whose filterability is markedly improved, is obtained by using certain low molecular weight phosphoric esters of the general formula I or II ##STR1## combined with a dispersion-active compound which contains at least one polar group capable of adsorption on the magnetic pigment. The polar group of the dispersion-active compound can be an acid or alkaline or amphoteric group or a group capable of hydrogen bonding or polarization. The dispersion-active compound can be a polycondensate, a polyaddition product or a chain growth copolymer which can also be used in the magnetic dispersion combined with customary other polymeric binders.

Magnetic recording medium comprising a polyoxyalkylene oxide binder, a

Aqueous dispersions of copolymers and/or graft copolymers composed of ethylenically unsaturated perfluoroalkyl monomers and perfluoroalkyl-free ethylenically unsaturated monomers can be prepared by polymerization in the presence of aqueous, emulsifier-free polyurethane dispersions as the graft base based on compounds containing perfluoroalkyl groups and active hydrogen atoms and compounds containing ionic and/or nonionic hydrophilic groups and active hydrogen atoms and polyisocyanates and can be used for the oil-repellent and water-repellent finishing of textiles, carpets, leather and paper.

Graft copolymers containing perfluoroalkyl groups

Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or diyhalogenohydrin are used for imparting wet strength to paper.

Nitrogen-containing polymeric compounds

Crosslinkable compounds obtainable by reaction of water-soluble mono- or polyamines with 2,3-epoxypropyl sulphonates or 2-hydroxypropyl 1,3-bis-sulphonates or their mixtures with up to 15 mol % of an epihalogenohydrin or dihalogenohydrin are used for imparting wet strength to paper.

Ketene dimers of the general formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another denote an alkyl or alkenyl radical each of which has at least 8 C atoms, a cycloalkyl radical having at least 6 C atoms or an aryl or aralkyl radical are used for the treatment of wool and synthetic polyamide fibres.

Treatment of polyamide fibres

The carrier mixture contains N-alkylphthalimides and compounds of the general formula ##STR1## in which R is C.sub.1 -C.sub.7 -alkyl; phenyl, benzyl or phenylethyl, which can be substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or C.sub.1 -C.sub.4 -alkoxycarbonyl,

Carrier mixture for the dyeing of polyester materials:

Cationic crosslinkable polyamidoamine resins which are obtainable by reaction of

Polyamidoamine resin from mixture of diamine and polyalkylene polyamine

Water-soluble crosslinkable polymeric compounds which are obtainable by reaction of reaction products, containing halogenohydrin groups, of ammonia or mono- or polyamines and an epihalogenohydrin with inorganic bases and subsequent reaction of the resulting compounds containing epoxide groups with halogen-free sulphonic acids to give compounds containing sulphonic acid ester groups are used for imparting wet strength to paper.

Nitrogen-containing water-soluble polymeric compounds

Water-soluble crosslinkable compounds which are obtainable by reaction of reaction products, containing halogenohydrin groups, of ammonia or mono- or polyamines and an epihalogenohydrin or 1,3-dihalogeno-2-hydroxypropane with inorganic bases and subsequent reaction of the resulting compounds, which contain epoxy groups, with halogen-free acids or derivatives thereof to give compounds containing 1-acyloxy-2-hydroxypropyl groups are used for providing paper with a wet-strength finish, for aftertreatment of cellulose dyed with reactive and direct dyestuffs and for finishing wool.

Nitrogen-containing water-soluble compounds

A sizing agent which contains from 1 to 60 parts, by weight, of a fixing and sizing accelerating agent and from 0 to 80 parts, by weight, of conventional auxiliaries per 10 parts by weight of hydrophobic, cellulose-reactive sizing materials, the fixing and sizing accelerating agent being a polymer composed of linear or branched carbon chains, to which primary, secondary or tertiary amino and/or quaternary ammonium groups are bound directly or by side chains exhibits a thorough and rapid sizing effect, in particular in the better sizing of paper.

Sizing agent and use thereof

A polymeric compound obtainable by reacting

Process for treating fibre materials

Basic polycondensates which are obtainable by reacting

Basic polycondensates

The present invention relates to agents for increasing the retention of fibres, fillers and pigments and for accelerating drainage in papermaking, and as flocculating agents in the working up of effluents from papermaking by filtration, sedimentation and flotation. They are characterized in that they contain, as active components, one or more nitrogen-containing condensation products which can be obtained by reacting (A) aliphatic polyol-ether-amines which are free from halogen groups, contain cohesive polyether segments and carry no amino groups within these segments, with (B) compounds which are polyfunctional towards amino groups, optionally in the presence of (C) polyaminopolyamides and/or (D) polyalkylenepolyamines, component (B) being employed in an amount such that water-soluble polycondensates which have a viscosity of 100 to 1,000 mPa.s at 25.degree. C. in 25% strength aqueous solution are formed.

Paper auxiliary from condensation product of aliphatic

New aqueous sizes, in particular paper sizes, are made available which contain

Sizes based on ketene dimers

The dyeing of cellulose fibres or fibre blends containing cellulose fibres with reactive dyes by a cold pad-batch or pad-steam process is effected with aqueous padding liquors which contain water-soluble reaction products of copolymers of maleic anhydride and ethylene, propylene, isobutylene, diisobutylene or styrene with ammonia or amines of the formula ##STR1## in which R.sup.1 and R.sup.2 stand for hydrogen, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl.

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Munich, Germany

Wolf-Dieter Schroer