Vetrotex France

Vetrotex Saint-gobain

Michel Arpin

Jean-Philippe Gasca

Andre Vagnon

Paul Petit

Eric Augier

Didier Muller

Daniel Caurant

Denis Malgrange

The present invention relates to glass fibers, especially for reinforcing organic materials and having an alumino-silicate glass composition, containing one or more alkaline earth metal compounds and with a low content of alkali metal compounds, wherein the composition further contains a combination of coloring agents formed from iron oxides, cobalt oxide and, optionally, chromium oxide, which enable the fibers to be dyed in bulk and to have more neutral tones.

Glass fibers for reinforcing organic materials, and composites obtained

The invention relates to glass threads coated with a sizing composition comprising (A) at least one alkane polyglycidyl ether, (B) at least one coupling agent and (C) at least one adhesive film-forming agent. These threads are especially suitable for reinforcing thermoplastic polyesters, such as polybutylene terephthalate or polyethylene terephthalate.

Sized glass threads for reinforcing organic materials

A sizing composition is provided that includes at least one silane satisfying the following formula:

Reinforcing glass strands and composites resistant to corrosive media

An aqueous emulsion for use in forming a weight average sizing coating for treating a surface of a substrate. The emulsion comprises at least one polyolefin having a molecular weight greater than 10,000; an acid material selected from the group consisting of saturated fatty acids, unsaturated fatty acids which do not includ any hydroxyl groups and mixtures thereof; at least one base; optionally, an emulsifying agent; and a sufficient amount of water to form an aqueous phase emulsion comprising from about 10-50% of solid materials. The emulsion is formed by combining the polyolefin with the fatty acid at a temperature higher than the melting point of the polyolefin to form a first mixture, adding to the first mixture a sufficient amount of base to neutralize the polyolefin and the fatty acid together with the water and optionally the emulsifying agent to form a second mixture; stirring the second mixture at an elevated pressure and at a temperature above the melting point of the polyolefin and subsequently cooling the mixture to a temperature below the melting point of the polyolefin. The emulsion is particularly useful as a component of a sizing for coating and protecting glass fibers for reinforcing polymeric materials.

Finish composition for coating and protecting a reinforcing substrate

An aqueous emulsion for use in forming a sizing coating for treating a surface of a substrate. The emulsion comprises at least one polyolefin having a weight average molecular weight greater than 10,000; an acid material selected from the group consisting of saturated fatty acids, unsaturated fatty acids which do not includ any hydroxyl groups and mixtures thereof; at least one base; optionally, an emulsifying agent; and a sufficient amount of water to form an aqueous phase emulsion comprising from about 10-50% of solid materials. The emulsion is formed by combining the polyolefin with the fatty acid at a temperature higher than the melting point of the polyolefin to form a first mixture, adding to the first mixture a sufficient amount of base to neutralize the polyolefin and the fatty acid together with the water and optionally the emulsifying agent to form a second mixture; stirring the second mixture at an elevated pressure and at a temperature above the melting point of the polyolefin and subsequently cooling the mixture to a temperature below the melting point of the polyolefin. The emulsion is particularly useful as a component of a sizing for coating and protecting glass fibers for reinforcing polymeric materials.

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La Motte Servolex, France

Michel Arpin