Rhone-poulenc Industries

Chloe Chimie

Compagnie Generale Horlogere

Jacques Meyer

Daniel Bernelin

Gerard Ditacroute

Philippe Thomas

Gilbert Chretien

Jacques Marie D'Avigneau

Upper and side portions of a watch/stop watch

Watch

Storage stable, polyester based compositions well adapted for hardening into molded shaped articles exhibiting virtually no shrinkage, are comprised of (i) an unsaturated polyester, (ii) a polymerizable, ethylenically unsaturated monomer copolymerizable therewith, (iii) an oligoester of the formula: ##STR1## and (iv) a condensate of such oligoester (I) with an unsaturated polyester.

Hardenable/curable unsaturated polyester based compositions

A composition of matter including (i) an epoxy resin and (ii) a cross-linking agent therefor, said cross-linking agent being the reaction product of trimellitic anhydride with a diol, and wherein such reaction the molar ratio anhydride/diol is not in excess of 2, is a useful binder for coating compositions, notably the powder paints.

Epoxy resin and noval cross-linking agent therefor

A saturated, cross-linking binder composition for use in powder coatings is disclosed. The composition comprises at least two saturated cross-linking resins and a cross-linking agent in which the resins exhibit different reactivities with respect to the cross-linking agent.

Binder compositions for powder coatings

A saturated cross-linkable binder composition adapted for preparing coatings having a non-glossy surface is disclosed which comprises:

Cross-linkable saturated powderous compositions and powderous painting

Binder compositions for powder coatings from mixed saturated resins

Curable, saturated polyester resins and epoxy resin cross-linking agents therefor, in association with an at least divalent metal oxide and a cross-linking catalyst, are useful binders for mechanically improved powder paints, e.g., those typically applied to metallic substrates by electrostatic deposition or fluidized bed spraying.

Cross-linkable, saturated polyester coating compositions

Curable, saturated polyester resins and cross-linking agents therefor, in association with an at least divalent metal oxide, are useful binders for the powder paints, e.g., those typically applied by electrostatic deposition or fluidized bed spraying.

A method of preparing varnishes based on polyester resin, which do not turn green on polymerization. It comprises forming a reducing agent during polycondensation, by reacting a magnesium compound with the reagents present. Applicable chiefly to the furniture industry.

Preparation of varnishes based on polyester resin

The invention relates to compounds based on saturated polyester and cross-linking agent. The compositions comprise a saturated polyester with terminal hydroxyl groups and a cross-linking agent consisting of a dianhydride with ester groups, the product of reaction between a trimellitic anhydride and a diol. Use of the compounds as a binder for powder paints applicable to the automobile, electrical household goods, agricultural machinery and lead industries.

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Paris, France

Jacques Meyer