Basf Aktiengesellschaft

Stefan Weiss

Albert Hettche

Wolfram Dietsche

Walter Ziegler

Hubert Trauth

Wilhelm Weber

Dieter Oeder

Peter Neumann

Andreas Deckers

Ludwig Schuster

Peter Lechtken

Michael Wolfgang Muller

Werner Liedy

Leo Ehemann

Franz Brandstetter

Christos Vamvakaris

Michael Ehle

Klaus Boehlke

Herbert Helfert

Wolf-Dieter Balzer

Michael Horner

Klaus Glaser

Reinhard Helwig

Peter Miederer

Lars Wittkowski

Michael Thomas

Manfred Daeuble

Guenter Hatzmann

Lutz Goethlich

Juergen Ciprian

Richard Mueller

Siegfried Gast

Naria Edlu Keene Von Koenig

Peter Kueppers

Otto Kuehneweg

Pigment concentrates comprising at least one pigment, a polyethylene wax prepared from one ethylene and, if desired, one comonomer using a metallocene catalyst, if desired a thermoplastic polymer and, if desired, additives can be used to color plastic moldings and plastic sheets.

Pigment concentrates and their production

Preparation of emulsifiable ethylene polymers

Production of prints by the offset heatset process

Stable aqueous polyolefin wax dispersions

Oxidized polyethylenes useful as lubricants in the extrusion of polyvinyl chloride are prepared by oxidation of finely divided polyethylene of high density at elevated temperatures with an oxidation gas of air and/or oxygen, the polyethylene used containing from 0.015 to 0.5% by weight of a free radical former organic compound in admixture and being contacted per hour with an oxidation gas which per kilogram of polyethylene contains from 30 to 600, in particular from 80 to 300, mg of ozone, with or without a reduced pressure treatment at elevated temperatures after the oxidation.

Oxidized polyethylene and use as lubricant for polyvinylchloride

Oxidized polyethylenes useful as water-emulsifiable waxes and as lubricants in the extrusion of polyvinyl chloride are prepared by oxidizing finely divided polyethylene of high density at elevated temperatures with an oxidation gas of air and/or oxygen, the oxidation gas supplied per hour containing not less the 100 mg of ozone per kilogram of polyethylene, by performing the oxidiation in a paddle dryer and passing the oxidation gas into the free gas space above the polyethylene, the temperature in the paddly dryer preferably being continuously adjusted to from 1.degree. to 2.degree. C. below the softening point of the polyethylene.

Oxidation of polyethylene

An aqueous wax dispersion for floor care contains a mixture of an aqueous secondary dispersion of an ethylene copolymer wax, having a specific MFI, and an aqueous primary dispersion together with plasticizers, leveling agents and water, and an ethylene copolymer wax in the form of an aqueous secondary dispersion is used for floor emulsions.

Floor polish emulsions based on ethylene copolymer

A liquid preservative for plated or unplated metal surfaces and surfaces of coatings, in the form of an aqueous wax dispersion which contains a special ethylene/acrylic acid copolymer wax, consisting of from 8 to 25% by weight of acrylic acid units and from 92 to 75% by weight of ethylene units, in partially or completely neutralized form, if appropriate as a mixture with waxes based on polyethylene oxidation products and/or hydrocarbon waxes, the use of this special ethylene/acrylic acid copolymer wax for preserving plated or unplated metal surfaces and surfaces of coatings, and a process for temporarily preserving metal surfaces and surfaces of coatings.

Aqueous wax dispersions as preservatives for metal surfaces and surfaces

Stabilizers consisting of (a) 2,5,7,8-tetramethyl-2-(2'-stearyloxyethyl)-chroman and (b) glyceryl stearate, glyceryl hydroxystearate, partial esters of stearic acid with condensates of glycerol and trimethylolpropane, triglyceryl stearate and/or tetraglyceryl stearate, with or without further conventional additives, the weight ratio of (a) to (b) being from 10:1 to 1:10, give improved stabilization to discoloration and superior stability during processing when used in plastics such as polyethylene or polypropylene.

Stabilizers

2,3-Dihydrobenz-4-oxa-1-thiins of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each hydrogen, methyl or methoxy, and R.sup.2 and R.sup.3 together may furthermore be a fused benzene ring, R.sup.4 is hydrogen or an m-valent aliphatic hydrocarbon radical which may be interrupted by sulfur and /or carry thiol groups as substituents, or is halogen when n is zero, X is --O--, --S-- or --O--CO--, m is 1 or 2 and n is zero or 1, are useful as antioxidants for organic materials.

Polypropylene stabilizing anti-oxidant 2,3-dihydrobenz-4-oxa-1-thiin

A lubricant for shaping polyvinyl chloride, which contains esters of oligomers of trihydric, tetrahydric, pentahydric or hexahydric aliphatic alcohols, having 3 or more monomer units, with saturated or unsaturated C.sub.8 -C.sub.36 -fatty acids, from 30 to 100% of the alcoholic hydroxyl groups being esterified.

Lubricants for shaping polyvinyl chloride, which contain esterified

Furan-3-carbohydroxamates of the formula ##STR1## where R.sup.1 is alkyl, unsubstituted or substituted cycloalkyl or unsubstituted or substituted phenyl, R.sup.2 is methyl or ethyl, R.sup.3 and R.sup.4 independently of one another are each hydrogen, bromine, chlorine, unsubstituted or substituted alkyl, or --CH.sub.2 --COOR.sup.5, where R.sup.5 is unsubstituted or substituted alkyl, and Me is divalent nickel or cobalt, stabilize plastics against the action of light, oxygen and heat. The compounds (I) have only slight intrinsic color.

Furan-3-carbohydroxamates and their use

Novel furancarboxylic acid derivatives of the general formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 independently of one another are each hydrogen, C.sub.1 -C.sub.8 -alkyl, cyclohexyl or phenyl, but not more than two of these radicals are simultaneously hydrogen, and R.sup.4 is a radical of the formula --NR.sup.5 R.sup.6, ##STR2## or OR.sup.6, where A is a bridge member, R.sup.5 is hydrogen, C.sub.2 -C.sub.6 -alkenyl, C.sub.5 -C.sub.7 -cycloalkyl or C.sub.1 -C.sub.12 -alkyl which may or may not be interrupted by 1, 2 or 3 oxygen atoms, and R.sup.6 is a radical of the formula ##STR3## where R.sup.7, R.sup.8, R.sup.9 and R.sup.10 are each C.sub.1 -C.sub.4 -alkyl, or R.sup.7 and R.sup.8 or R.sup.9 and R.sup.10 together form a tetramethylene or pentamethylene bridge, and R.sup.11 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -alkenyl, C.sub.2 -C.sub.4 -hydroxyalkyl or aralkyl, and their salts are useful as light stabilizers for organic polymers, in particular olefin polymers.

Furan-3-carboxylic acid derivatives

A process for the preparation of water-emulsifiable polyethylene by oxidizing high density polyethylene, at below the softening point of the polyethylene, in the presence of oxygen, wherein the oxidation is carried out in a fluidized bed reactor, using a polyethylene which beforehand has been heated, with exclusion of oxygen, in the presence of a compound which forms free radicals.

Preparation of emulsifiable polyethylene by oxidizing polyethylene in a

A lubricant for molding chlorine-containing thermoplastics, which contains ethylene/acrylic acid or ethylene/maleic acid copolymers esterified, in a molar ratio of carboxyl groups to alcoholic hydroxyl groups of from 1:0.2 to 1:1, with C.sub.1 -C.sub.20 -aliphatic alcohols which may or may not contain ether groups, the copolymers, prior to esterification, having a mean molecular weight of from 500 to 10,000 and containing from 2 to 15% by weight of acrylic acid or from 1 to 8% by weight of maleic acid as copolymerized units, the percentages being based on copolymer.

Lubricant, containing esterified ethylene/acrylic acid or

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Neckargemuend, Germany

Stefan Weiss