Sandoz Gmbh

Ciba-geigy Corporation

Horst Mayerhoefer

Wolfgang H Mueller

Hans Hinsken

Urs Sollberger

Hermann Schneider

Rainer Wolf

Hans-Werner Finck

William O Drake

Anton Voykowitsch

Peter Borer

The present invention relates to a process for stabilizing organic polymeric materials comprising incorporating therein a benzofuran (2) one or indolin (2) one compound as stabilizer. Such stabilized polymeric materials are stabilized against degradation during the polymer processing.

Benzofuranone or indolinone compounds useful as stabilizers for organic

The present invention relates to a process for stabilizing organic polymeric materials comprising incorporating therein a benzofuran(2)one compound or indolin(2)one compound containing at least two benzofuran(2)one or indolin(2)one nuclei.

Benzofuran(2)one or indolin(2)one compounds useful as stabilizers for

3-Hydroxylbenzyl compounds of formula, ##STR1## in which each of R.sub.1, R.sub.2 and R.sub.3 is a hydrocarbon group, e.g. alkyl, R.sub.4 is hydrogen or alkyl, or forms with R.sub.1 --CH.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 --, and Z is either an oxygen- or sulphur-containing group featuring at least one ester or amide moiety, or a disubstituted amino group, Z being bound to the rest of the molecule via the oxygen or sulphur atom, or nitrogen atom, respectively, are useful as antioxidants. Organic materials which are susceptible to the degradative effects of oxygen are treated with one or more of such compounds, e.g. by incorporation into the body of the organic material, in order to be stabilized against such effects.

3-Hydroxybenzyl compounds useful as antioxidants

Carbonates and urethanes of 2,2'-alkylene or -cycloalkylene-bis-4,6-disubstituted phenols are useful for stabilizing organic materials against the degradative effects of oxygen.

Carbonates and urethanes of 2,2'-alkylene or

Flameproofing composition comprises an O,O,O-triester of phosphorus, phosphoric or thiophosphoric acid and a haloalkyl aryl ether, and optionally a chlorinated aliphatic hydrocarbon and/or an organic tin or lead compound. The composition is useful for flameproofing polymeric organic materials, especially synthetic polymeric organic materials such as polypropylene, which may alternatively be flameproofed by treatment separately with the individual components of the composition.

Flameproofing compositions comprising a triester of phosphorous

This invention relates to the production of phosphorus derivatives with a 5,5-bis-(halomethyl)-1,3,2-dioxaphosphorinane structure and to their use as flameproofing agents for plastics and textile fibres.

5,5-Bis(halomethyl)1,3,2-dioxaphosphorinane compounds

The present invention relates to phosphorus containing compounds and more specifically to phosphorous and phosphoric acid esters of the formula, ##STR1## wherein R.sub.1 and R.sub.2 are each hydrogen or alkyl,

Organic compounds

The invention provides novel boric acid esters, useful as flame retardants.

Boric acid esters

The present invention concerns a novel method of flame-proofing flammable material which comprises treating said material with a compound of the formula: ##EQU1## WHEREIN N IS 1 OR 2, AND R, when n is 1, is a radical of the formula ##EQU2## wherein R.sub.1 and R.sub.2 are substituents e.g. alkyl, or R.sub.1 and R.sub.2, together with the nitrogen atom, form a heterocyclic ring or R, when n is 2, is a radical of the formula ##EQU3## wherein R.sub.1 and R.sub.4 are substituents e.g. alkyl and R.sub.3 is a hydrocarbon bridge e.g. alkylene, or R.sub.1, R.sub.2 and R.sub.4, together with the nitrogen atoms to which they are bound, form a heterocyclic ring, or a group of the formula ##SPC1## Wherein m is 1 to 5, and novel compounds (i.e. when n is 2) useful as flame-proofing agents.

Bromo-propanol derivatives as flame retardants

Flame retarding compounds of formula, ##SPC1## In which

Growing community of inventors

Oberwil, Switzerland

Horst Mayerhoefer