Atochem

Produits Chimiques Ugine Kuhlmann

P C U K Produits Chimiques Ugine Kuhlmann

Cdf Chimie S.a.

Jean-Paul Ollivier

Bernard Vinatier

Michel Ochsenbein

Albert Strassel

Huynh Van Lang

A homogeneous composite material comprising at least one external layer of thermosetting polymer, a layer of lightened thermoplastic polymer, and intermediate between the two layers, a homogeneous layer formed by polymerizing a monomer which is a diluent for the said lightened polymer; such that the monomer polymerizes to form an intimate blend at the interface of said polymers. The invention also comprises a process for producing the above said composite material.

Process for producing a composite lightened product

Composite material

An anti-shrink additive for unsaturated polyester resins of the formula: ##STR1## wherein, R is the remainder of a triol or tetrol,

Anti-shrink additive for unsaturated polyester, its fabrication process,

A process for lubricating polyvinylidene fluoride consisting of introducing into a polyvinylidene fluoride base resin from 0.1 to 10% by weight of low molecular weight polytetrafluoroethylene, in the preferred embodiment.

Lubricated thermoplastic compositions of polyvinylidene fluoride

This invention relates to an unsaturated polyester resin containing from about 1.5 .times.10.sup.-3 to 1.5.times.10.sup.-2 ether group per gram of resin and having a viscosity of from about 6 to 20 poise measured at 20.degree. C. on a 60% by weight solution thereof in styrene, comprising the condensation reaction product of at least one dibasic acid or corresponding anhydride, at least one of which is a polyol and at least one of which is a saturated linear ether alcohol containing at least one ether group; preimpregnated materials comprising said resin; and to the methods of making such resin.

Unsaturated polyester resin and process

The present invention relates to a laminate comprising a polymethyl methacrylate layer having adheringly coated on at least one surface thereof a layer of polyvinylidene fluoride having a maximum thickness one-tenth the thickness of the polymethyl methacrylate layer; the total thickness of the polyvinylidene fluoride being no greater than about 400 microns. The invention also comprises the method of making such laminates.

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Paris, France

Jean-Paul Ollivier