Bayer Aktiengesellschaft

Paul Schiller

Hugo Vernaleken

Ludwig Bottenbruch

Wilfried Paulus

Gerhard Darsow

Joachim Wank

Hermann Genth

Hans Sattlegger

Eckart Reese

Karl Schnurrbusch

Rudolph Binsack

An organopolysiloxane composition having a microbiocidal action comprising an .alpha.,.omega.-dihydroxypolydiorganosiloxane and a benzimidazolyl-alkyl-carbamate of the formula ##STR1## wherein R.sup.1 is an alkyl radical with 1 to 4 carbon atoms, optionally substituted by the radical --OR.sup.3,

Microbiocidal organopolysiloxane molding compositions

A branched, high molecular-weight polyaryl-ether sulphone which is the reaction product of approximately equimolar amounts of an aromatic dialkali metal bishydroxylate and a bis-(halogen-aryl) compound, whose aryl nuclei are linked by sulphonyl groups, and about 0.01 to about 2 mol %, based on the bishydroxylate or bis-(4-halogenaryl) compound, of an aromatic compound having at least three aromatically linked alkali metal hydroxylate substitutents and/or of a halogenaryl compound having at least three aryl-linked halogen substituents and which is capable of substitution under the reaction conditions of polyaryl-ether sulphone manufacture.

Branched aromatic polyaryl-ether sulphones

A polycarbonate plastic having improved electrical tracking resistance is provided by including in the polycarbonate a substance which is normally an oxidation or combustion catalyst such as a transition metal having a positive oxidation potential of &gt;+0.2 volt.

Polycarbonate resin having improved electrical tracking resistance

Growing community of inventors

Munich, Georgia

Paul Schiller