Labaz

Sapchim-fournier-cimag

Fevrier-decoisy-champion

Marie-Madeleine Chandavoine

Charles Pigerol

Paul De De Fillain

Michel Chignac

Claude Grain

Paul De Cointet De Fillain

Souli Nanthavong

Jean Boussely

Paul De Cointet Fillain

The instant invention relates to compounds of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, alkenyl, phenyl or phenylalkyl radical, R.sub.2 represents an alkyl, alkenyl or alkynyl radical, a .omega.-halogenoethyl radical, an optionally substituted benzyl radical, a phenylalkenyl radical, an optionally substituted phenyl radical, a radical of the formula R.sub.4 --O--(CH.sub.2).sub.n -- wherein n is 2, 3, or 4 and R.sub.4 represents an optionally substituted alkyl radical or a phenyl radical, R.sub.3 represents a hydrogen atom, an alkyl, alkenyl or phenyl radical. The compounds of formula I have been found to be useful as stabilizers for vinyl resins.

Dihydropyridine derivatives as stabilizers for vinyl chloride polymers

The instant invention relates to compounds of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, alkenyl, phenylalkyl radical, R.sub.2 represents a straight-chain alkyl, a straight- or branched-chain alkenyl or alkynyl radical, a .omega.-halogenoethyl radical, an optionally substituted benzyl radical, or a radical of the formula R.sub.4 --O--(CH.sub.2).sub.n --wherein n is 2, 3 or 4 and R.sub.4 represents a substituted alkyl radical. The compounds of the foregoing formula have been found to be useful as stabilizers for vinyl resins.

Dihydropyridine derivatives

This invention relates to new associations of a compound of the formula: ##STR1## wherein R.sub.1 and R.sub.2 represent a hydrogen atom, an alkyl, alkoxy or hydroxy radical and R represents a hydrogen atom or an alkyl or alkoxy radical, and of a compound of the formula: ##STR2## wherein R.sub.3 represents an alkyl, alkenyl, alkynyl or aralkyl radical or a radical of the formula R.sub.4 --O(CH.sub.2).sub.n --, wherein R.sub.4 represents an alkyl or phenyl radical and n is 2, 3 or 4. The associations according to the invention are stabilizers for vinyl resins.

Associations for stabilizing vinyl resins

Synthetic resin compositions based on vinyl polymers or copolymers are stabilized against degradation by both heat and light by the incorporation therein of a 1,4-dihydropyridine derivative represented by the general formula: ##STR1## wherein R represents a straight or branched-chain saturated or unsaturated alkyl radical containing from 9 to 22 carbon atoms. The stabilizer can be present in an amount of from 0.01 to 0.5 percent by weight, based on the vinyl resin. The vinyl resin may be, for example, polyvinyl chloride, a vinyl chloride-vinyl acetate copolymer or a vinyl chloride-vinylidene chloride copolymer. The stabilized vinyl resins can be used in the manufacture of food packaging materials and containers and also of flooring tiles and recording discs. Some of the dihydropyridine derivatives are novel compounds.

Stabilization of vinyl resins

3-Thienyl-acetate derivatives of the general formula: ##STR1## wherein R.sub.1 represents an alkyl, a cycloalkyl or an aralkyl radical, R.sub.2 represents hydrogen or R.sub.1 and R.sub.2, when they are taken together to form a cyclic group with the carbon atom to which they are attached, represent a polymethylene radical having from 2 to 5 carbon atoms, are prepared from a mixture consituted by a compound of the formula: ##STR2## wherein R.sub.3 has the meaning given above and an organic halide of the formula:

Process for preparing 3-thienyl-acetate derivatives

This application relates to a new polyester of behenic acid and thiodiglycol, namely thiodiglycol dibehenate. The compound of the invention has been found to possess valuable properties as a lubricating agent for thermoplastic materials. This application relates also to a method of use of said compound as lubricating agent for thermoplastic materials.

Thiodiglycol dibehenate and method of use

This application relates to new lubricating associations for thermoplastic materials, which comprise at least two lubricating agents selected from 1,2-propanediol dibehenate, thiodiglycol dibehenate, diethyleneglycol dibehenate, triethyleneglycol dibehenate, trimethylolpropane tribehenate, dipentaerythrite pentabehenate, 1,4-butanediol dibehenate, glyceryl tribehenate, pentaerythrite tetrabehenate and one metallic salt of behenic acid. This application relates also to the polymers and co-polymers of vinyl chloride containing said lubricating associations.

Lubricating agents for thermoplastic materials and process for preparing

New stabilizers for polymers of vinyl chloride, the said stabilizers being 2-phenyl-indole derivatives corresponding to the formula: ##STR1## wherein R.sub.1 and R.sub.2, which are the same or different, each represent a branched- or straight-chain alkyl group containing from 1 to 12 carbon atoms, a cyclohexyl radical, a branched- or straight-chain alkyloxy group containing from 1 to 12 carbon atoms, a benzyloxy radical, a hydroxy radical or R.sub.1 and R.sub.2 represent together an alkylenedioxy radical containing from 1 to 3 carbon atoms, R.sub.3 represents a hydrogen atom, a methyl or methoxy radical, with the proviso that one at least of the substituents R.sub.1 or R.sub.2 does not represent an alkyl radical.

2-Phenyl-indole derivative stabilizers for PVC resins

New stabilizers of polymers and co-polymers of vinyl chloride, the said stabilizers being 2-phenyl-indole derivatives corresponding to the formula: ##STR1## wherein R.sub.1 and R.sub.2, which are the same or different, each represent a branched- or straight-chain alkyl group containing from 1 to 12 carbon atoms, a cyclohexyl radical, a branched- or straight-chain alkyloxy group containing from 1 to 12 carbon atoms, a benzyloxy radical, a hydroxy radical or R.sub.1 and R.sub.2 represent together an alkylenedioxy radical containing from 1 to 3 carbon atoms, R.sub.3 represents a hydrogen atom, a methyl or methoxy radical, with the proviso that one at least of the substituents R.sub.1 or R.sub.2 does not represent an alkyl radical.

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Sisteron, France

Marie-Madeleine Chandavoine