Hoechst Aktiengesellschaft

Clariant Corporation

Gerhard Pfahler

Hartmut Wiezer

Norbert Mayer

Hans-Jerg Kleiner

Franz Scheidl

Karl Gaa

Mathias Mehrer

Manfred Bohshar

Harald Haberlein

Georg Schmailzl

Gunther Nowy

Dieter Regnat

Helmut Korbanka

Alexander Lichtblau

Matthias Z&auml;h

Thomas St&auml;hrfeldt

Thomas Stahrfeldt

Otto Mauz

Harald Knorr

Edgar Fischer

Karl Waldmann

Hermann Schindler

Josef Wiedemann

Ulrich M Hutten

Thomas St{umlaut Over (a)}hrfeldt

Klaus-Dieter Bergner

Hans Huber

Klaus Keck-Antoine

Klaus Ulm

Matthas Gutweiler

G&uuml;nter Nowy

Christian Wick

Matthias Z{umlaut Over (a)}h

The present invention relates to a synergistic additives mixture for producing calendered polyolefin articles, comprising

Polyolefin molding compound for producing calendered films/sheets

Storage-stable plastics additives

Compounds based on polyalkyl-1-oxadiazaspirodecane compounds

Oligomeric stabilizer mixture

The present invention relates to mixtures comprising the compound I in a proportion of 65-95% by weight, the compound II in a proportion of 5-35% by weight and the compound III in a proportion of 0-10% by weight

Synergistic stabilizer mixture based on polyalkyl-1-oxa-diazaspirodecane compounds

The hydrolysis stability of trivalent organic phosphorus compounds of the formula I ##STR1## used as stabilizers for thermoplastics is improved if these compounds are treated with 0.01 to 5% by weight of an oxide, a carbonate, a hydroxide, a bicarbonate or a carboxylate of a metal of groups 1a, 2a, 2b and 7b of the periodic table of the elements. The storage stability and the ease of handling are increased and the discoloration of the stabilized polymers is reduced.

Process for the preparation of hyrolysis-stable trivalent phosphorus

The present invention relates to novel UV stabilizers of the formula (I) ##STR1## where the substituents are as defined in the description. These compounds are highly suitable for stabilizing organic material, such as plastics, surface coatings, paints and oils, against the action of light, radiation, oxygen and heat.

Light stabilizers based on sterically hindered amines

The present invention relates to additive mixtures having a nucleating action for plastic compositions, comprising nucleating agents based on dibenzylidenesorbitol, or derivatives therof, and amido-functional compounds. The aldehydes formed from the nucleating agents by decomposition during processing and use of the plastics treated therewith are collected and bound by adsorption, absorption and/or chemcial reaction.

Additive mixture having a nucleating action for plastics compositions

The present invention relates to plastics comprising a high molecular weight, sterically hindered amine, wherein the sterically hindered amine is at least one amine from the group consisting of I: oligomerized 2,2,4,4-tetramethyl-20(oxiranylmethyl)-7-oxa-3,20-diazadispiro�5.1.11.2!he neicosan-21-one, II: condensation product of 2-chloro-4,6-di(4-n-butylamino-1,2,2,6,6-pentamethylpiperidyl)-1,3,5-triaz ine and 1,2-bis(3-aminopropylamino)ethane, and III: condensation product of 1-hydroxyethyl-2,2,6,6-tetramethyl-4-hydroxypiperidine and succinic acid. These plastics exhibit a reduced rate of uptake of sulfur compounds. The invention further relates to shaped articles made from these plastics.

Plastic with reduced sulfur uptake rate

Polyvinyl butyrals (PVBs) with improved thermal stability and improved light resistance contain as stabilizers polynuclear phenols which phenolic radicals have a quaternary carbon atom in the para-position to the phenolic hydroxyl group and if desired in combination with synergistically acting, nitrogen-containing, sulfur-containing or phosphorus-containing co-stabilizers of the types a) to d). The use of the resulting films of low yellowness as interlayer films having substantially reduced yellowing for the production of laminated glasses and glass composites of silicate glass sheets is described.

Polyvinyl butyrals having improved thermal stability and light resistance

A polyphenylene ether molding composition which contains at least one alkylsulfonate as antistatic and at least one light stabilizer of the formula III ##STR1## has better antistatic properties and greater light stability than is the case for simultaneous use of alkylsulfonates and previously known light stabilizers, such as, for example, tetramethylpiperidinyl derivatives.

Light-stable polyphenylene ether molding composition with an antistatic

6-aryl-6H-dibenzo[c,e][1,2]oxaphosphorine stabilizers for plastics

In plastic molding compositions, in particular those based on olefin polymers, which contain phenolic stabilizers and metal ions as catalyst residues, the discoloration at the processing temperature is reduced if they contain triglycerol or ditrimethylolpropane as catalyst deactivators.

Process for reducing the discoloration of a plastic molding composition

Aryl phosphonites, a process for their production and their use for

Diarylphosphinous acid aryl esters are made by the disclosed process. These compounds are useful for stabilizing plastics, in particular polymerization plastics, and hence can be incorporated into a plastic molding composition.

Diarylphosphinous acid aryl esters, a process for their preparation and

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Augsburg, Germany

Gerhard Pfahler