Basf Aktiengesellschaft

Guenther Schulz

August Lehner

Werner Lenz

Kaspar Bott

Michael Bobrich

Uwe Keppeler

Bernhard Nick

Hermann Roller

Horst Koch

Rudolf Suettinger

Albert Kohl

Wolfgang Druschke

Helmut Kopke

Karl-Rudolf Kurtz

Helmut Jaeger

Heinrich Hartmann

Erich Beck

Gerhard Hoffmann

Wolfgang Trieselt

Alexander Kud

Werner Loch

Joachim Roser

Friedrich Seitz

Guenter Heil

Manfred Zuerger

Thomas Zwez

Roller Hermann

Eleonore Bueschges

Guenther Wallbillich

A reaction product useful for preparing radiation-sensitive materials, in particular materials whose solubility in water or aqueous alkali increases on irradiation, contains urea and urethane groups and also carboxyl groups and is obtained by reaction of

Reaction product, preparation thereof and radiation-sensitive material

Magnetic recording media consist of a nonmagnetic substrate and at least one magnetizable layer which is firmly applied thereon and is based on a polyurethane binder, not less than 50% by weight of the binder consisting of a high molecular weight branched polyurethane elastomer having OH-containing urea groups at the chain ends, and the frictional properties of the binder being improved and its coefficient of friction reduced by incorporation of perfluoro groups.

Magnetic recording media comprising a polyurethane binder resin

Magnetic recording media consist of a nonmagnetic substrate and at least one magnetizable layer which is applied firmly thereon and is based on a polyurethane binder, not less than 50% by weight of binder consisting of a branched polyurethane elastomer having urea groups at the chain ends.

Magnetic recording medium containing an isocyanate-free branched

Magnetic recording media consist of a nonmagnetic substrate and at least one magnetizable layer which is firmly applied thereon and is based on a polyurethane binder which may be crosslinked with a polyisocyanate, not less than 50% by weight of the binder consisting of a low molecular weight branched polyurethane having OH-containing urea groups at the chain ends, and the frictional properties of the binder being improved and its friction reduced by the incorporation of perfluoro groups.

A flexographic printing plate which is resistant to ozone cracking and where the flexible recording layer has an anisotropy factor AF of &lt;1.5 is produced from a photosensitive mixture consisting of A) one or more elastomeric binders,

Preparation of recording layers and their use for the production of

Magnetic recording media consist of a nonmagnetic substrate and at least one magnetizable layer which is firmly applied thereon and is based on a polyurethane binder which may be crosslinked with polyisocyanate, not less than 50% by weight of the binder consisting of a low molecular weight branched polyureaurethane having OH-containing urea groups at the chain ends, and the sliding properties of the said binder being improved and its coefficient of friction reduced by incorporation of siloxane groups.

Magnetic recording media having a branched thermoplastic polyurethane

Novel 2-[(meth)acrylamidomethyl]-1,3-diketones have the general formula (I) ##STR1## where R is hydrogen or methyl,

2-(meth)acrylamidomethyl)-1,3-diketones

2-((meth)acrylamidomethyl)-1,3-diketones

Novel 4-[(meth)acrylamidomethyl]-pyrazoles and -isoxazoles of the general formula ##STR1## where R is hydrogen or methyl, R.sup.1 is hydrogen, methyl or ethyl, R.sup.2 and R.sup.3 may be identical or different and are each alkyl of 1 to 6 carbon atoms or unsubstituted or substituted aryl of 6 to 20 carbon atoms, and X is oxygen or an NR.sup.4 group where R.sup.4 is hydrogen or a radical having the meanings of R.sup.2 or R.sup.3, a process for their preparation, and the use of these compounds in particular for polymerization and the preparation of homopolymers and copolymers, are described.

4-[(meth)acrylamidomethyl]-pyrazoles and -isoxazoles, their preparation

A flexographic printing plate which is resistant to ozone cracking and where the flexible recording layer has an anisotropy factor AF of &lt;1.5 is produced from a photosensitive mixture consisting of

4-(meth)acrylamidomethyl)-pyrazoles and -isoxazoles, their preparation

Radiation-curable contact adhesives containing (A) oligomeric or polymeric reaction products of (a) diisocyanates, (b) polyesterols and/or polyetherols, (c) optionally C.sub.2 -C.sub.50 -diols, (d) C.sub.2 -C.sub.20 -hydroxyalkyl (meth)acrylates and (e) monohydroxyalkylcarboxylic acids in defined weight proportions and (e) monovinyl compounds in an amount of 2-90% by weight, based on A+B, produce contact adhesive layers of particularly high surface tackiness and particularly high cohesion.

Radiation-curable contact adhesives based on polyurethane acrylates

Compounds of the general formulae ##STR1## where R is versatyl and R' is unsubstituted or alkyl-substituted straight-chain alkylene of 4 or 5 carbon atoms can be prepared by reacting the versatic ester of 1,3-dihydroxy-propyl-2 acrylate and/or of 2,3-dihydroxy-propyl-1 acrylate with equimolar amounts of saturated or monoolefinically unsaturated cyclic dicarboxylic anhydrides having 4 or 5 carbon atoms and an oxygen atom in the ring at from 50.degree. to 150.degree. C. in the presence of customary esterification catalysts and can be used as reactive diluents in radiation-curable contact adhesives.

Preparation of monoolefinically unsaturated carboxyl-containing versatic

The invention relates to a novel photosensitive recording material which can be developed in aqueous solvents after its imagewise irradiation with actinic light and which consists essentially of a dimensionally stable base (A) and of a photosensitive recording layer (B). The said photosensitive recording layer (B) contains from about 48 to about 85% by weight, based on the photosensitive recording layer (B) of one or more elastomeric graft copolymers (B1) which are selected from the group consisting of polyalkylene oxide - vinyl ester - graft copolymers whose vinyl ester structural units have been hydrolyzed to a degree of not less 50 mol.-% from about 0.01 to about 10% by weight, based on the photosensitive recording layer (B), of one or more photoinitiators (B2), and from about 5 to about 30% by weight, based on the photosensitive recording layer (B), of one or more photopolymerizable monomers (B3). In addition to these components, the photosensitive recording layer (B) might contain further assistants or additives. The novel photosensitive recording material is especially well suited for the production of lithographic printing plates, resists and relief plates, in particular relief printing plates. The invention is furthermore related to a process for preparing the novel photosensitive recording material by polymerizing vinylesters in the presence of polyalkylene oxides to yield polyalkylene oxide - vinylester - graft copolymers, hydrolyzing or transesterifying said polyalkylene oxide - vinylester - graft copolymers to yield the said elastomeric graft copolymer (B1), mixing the said elastomeric graft copolymers (B1) with the other components of the photosensitive recording layer (B), and forming the said photosensitive recording layer (B) from the mixture consisting of its components on the dimensionally stable base (A).

Photosensitive recording materials having a novel graft copolymer binder

Detergents contain added graft copolymers which have an antiredeposition action and are obtainable by grafting polyalkylene oxides having a number average molecular weight of from 2000 to 100,000 with vinyl acetate in a weight ratio of from 1:0.2 to 1:10, and up to 15% of whose acetate groups may be hydrolyzed.

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Bad Duerkheim, Germany

Guenther Schulz