Basf Aktiengesellschaft

Bernhard Nick

Reinhold J Leyrer

Harald Lauke

Kaspar Bott

Guenther Schulz

Dietrich Haarer

Thomas Loerzer

Peter Strohriegl

Wilhelm Weber

Methacrylate (co)polymers containing carbazolyl side groups contain or are composed of repeating units of the general formula (I) ##STR1## where m is an integer of from 3 to 11. The novel methacrylate (co)polymers containing carbazolyl side groups can advantageously be used as photoconductors in photoconductive layers, in particular of electrophotographic recording elements.

Methacrylate (co)polymers containing carbazolyl side groups and

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

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

The surface of plates, foils or ribbons consisting of aluminum or aluminum alloys are anodically oxidized in an aqueous electrolyte as the anodizing bath by a process in which the electrolyte used may contain organic and inorganic acids together with further additives. The aqueous electrolyte must contain one or more silanes I of the formula I

Anodic oxidation of the surface of aluminum or aluminum alloys

A sensitized lithographic printing plate is produced from an aluminum base which has been mechanically, chemically and/or electrochemically pretreated and anodically oxidized in a conventional manner and a photosensitive copying layer which is applied to this base, by a process in which a thin layer which imparts hydrophilic properties and consists of a hydrolysis product or condensate of one or more silanes is applied between the base and the copying layer. These lithographic printing plates are particularly useful for offset printing.

Photosensitive element having an aluminum base and silane intermediate

An electrophotographic recording element consisting of an aluminum base, which is mechanically, chemically and/or electrochemically pretreated in a conventional manner, and a photoconductive layer which is applied to this base is produced by a process in which a thin layer which imparts hydrophilic properties and consists of a hydrolysis product or condensate of a silane is applied between the base and the photoconductive layer. These recording elements are particularly useful for electrophotographic offset printing.

Growing community of inventors

Ludwigshafen, Germany

Bernhard Nick