Saint-gobain Vitrage

Saint-gobain Vitrage International

Saint-gobain Recherche

Gerard M Daude

Jean-Louis M Bravet

Michel J Moncheaux

Daniel Colmon

Jean L Bravet

Gerard Dimier

Roger Orain

Andre Beyrle

Frederic Drujon

Claude Bourelier

Noel Crux

Philippe Girard

Sylvie Drujon

Philippe Dagaut

Rene Muller

Cathy Dievart

Cecile Gosse

The invention pertains to a method of treatment of a pane for improving the bond of a peripheral profile, notably of a molded-on profile. The method according to this invention consists of treating at least a part of one face of the pane with at least one silane and a composition capable of forming a film having free OH groups.

Method of treatment of a pane for the bonding of a peripheral profile

The invention concerns a procedure for the fabrication of an enamel layer on a glass sheet. In accordance with the process, at least one portion of the drying operation is effected by microwaves, the enamel layer advantageously containing a microwave doping agent.

Process for enamelling a glass substrate

One-piece or laminated window fitted with a peripheral duplicate-molded profile ready for mounting by adhesive bonding in a bay, wherein the surface of the peripheral profile intended to be bonded is coated with a polymerized layer obtained from a composition, which contains an isocyanate constituent and a polyalcohol constituent present in excess in relation to the isocyanate constituent in order to form, after polymerization, a polyurethane layer having free hydroxyl groups capable of reacting subsequently with the adhesive strip used to mount the window, wherein the polyalcohol constituent contains at least one polyvinyl chloride copolymer containing free hydroxyl groups.

Encapsulated window ready for mounting and fabrication method therefor

A polyurethane film of excellent optical quality is prepared by applying to a substrate, by reactive casting or reactive spraying, a reaction mixture of an isocyanate component and a polyol component containing at least one long difunctional polyol having a molecular weight between 500 and 10,000, containing at least partial ethylene oxide segments, with the percentage by weight of ethylene oxide segments relative to the total weight of the polyurethane being greater than 20%, at least one short diol as chain extender, with the ratio of free NCO groups of the isocyanate component to free OH groups of the polyol component being between 1.5 and 2; and contacting a surface of said applied material intended to face toward the outside of the safety glass with a surface treatment compound of an acrylic derivative or isocyanate having a functionality greater than 2.

Process for producing a transparent polyurethane film with

A coating layer of a thermohardening polyurethane having self-cicatrization properties is prepared by preparing a reactive mixture of an isocyanate component which is a diisocyanate or a mixture of diisocyanate monomers capable of forming an isocyanate trimer, a polyol monomer having a functionality of at least 2 and a trimerization catalyst; placing the reactive mixture onto a support for formation of said layer; heating the reactive mixture to a temperature sufficient to initiate trimerization; and then further heating the reactive mixture to initiate and conduct polymerization thereby forming said polyurethane layer.

Process for the production of a layer of self-cicatrizing polyurethane,

The invention relates to a molded window glass intended to be installed by gluing it into a window opening, especially a window opening in a car. The molded profile has at least one reactive surface comprising free OH groups which can subsequently react with the strip of adhesive used for installation of the window glass in the window opening by gluing.

Encapsulated window glass, ready for installation, and a method for its

A high optical quality polyurethane layer is manufactured by reactive pouring or reactive spraying of a reaction mixture comprising an aliphatic isocyanate component and a polyol component followed by a polymerization comprising the passage of the layer through a catalytic atmosphere containing at least one tertiary amine.

Method and device for the manufacture of a high optical quality

A polyurethane film of excellent optical quality is prepared by applying to a substrate, by reactive casting or reactive spraying, a reaction mixture of an isocyanate component and a polyol component containing at least one long difunctional polyol having a molecular weight between 500 to 10,000, containing at least partial ethylene oxide segments, with the percentage by weight of ethylene oxide segments relative to the total weight of the polyurethane being greater than 20%, at least one short diol as chain extender, with the ratio of free NCO groups of the isocyanate component to free OH groups of the polyol component being between 1.5 and 2; and contacting a surface of said applied material intended to face toward the outside of the safety glass with a surface treatment compound of an acrylic derivative or isocyanate having a functionality greater than 2.

Scratch-resistant and abrasion-resistant transparent polyurethane film

A high optical quality transparent plastic sheet having a polyurethane layer formed by reactive pouring or reactive pulverization onto a flat horizontal support of a reaction mixture containing a polyol component and an isocyanate component, with the surface of the polyurethane layer which was facing the support during the formation of the layer containing an acrylic polymer resulting from the contact, during deposition of the reaction mixture, of the reaction mixture with a thin acrylic layer previously deposited on the support. The acrylic layer and the polyurethane layer are interpenetrated.

High optical quality transparent sheet of plastic which is scratch- and

Preformed, two-ply, optical, energy-absorbing, flexible polyurethane sheet including a self-healing surface and a surface which is adhesive under the influence of heat and pressure; bilayer glazing laminates and bilayer automotive safety windshields including said two-ply sheet; said two-ply sheet comprises a self-healing ply and an energy-absorbing adhesive plyurethane ply which is prepared preferably by reactive-casting on a horizontal support and formed preferably from a polyisocyanate monomer including from about 2 to about 10 wt. % of urea groups.

Bilayer windshield and preformed two-ply sheet for use therein

The invention is directed to the method, products and apparatus for the manufacture of a high optical quality sheet of plastic comprising a polyurethane layer having energy-absorbing properties obtained by reactive pouring or reactive pulverization of the reaction components. In accordance with the invention, the polyurethane layer is treated, while it is in a state of ongoing polymerization corresponding to an NCO/CH ratio of less than 0.7, with water in a liquid or vapor form and then subsequently, after rolling with an interpolated film, stocking and unrolling, the layer is subjected to heat treatment.

Preformed, two-ply, optical, energy-absorbing, flexible polyurethane sheet including a self-healing surface and a surface which is adhesive under the influence of heat and pressure; bilayer glazing laminates and bilayer automotive safety windshields including said two-ply sheet; said two-ply sheet comprises a self-healing ply and an energy-absorbing adhesive polyurethane ply which is prepared preferably by reactive-casting on a horizontal support and formed preferably from a polyisocyanate monomer including from about 2 to about 10 wt. % of urea groups.

An adhesive layer used in the manufacture of laminated glasses. The layer comprises a cold polymerizable polyurethane formed from an isocyanate component comprising a monoisocyanate with a double ethylene bond and from a polyol component and at least one polymerization initiator.

Adhesive layer used in the manufacture of laminated glass and laminated

An adhesive layer used in the manufacture of laminated glasses. The layer comprises a cold-polymerizable polyurethane formed from an isocyanate component selected from among the aliphatic isocyanates, cycloaliphatic isocyanates, and aliphatic-aromatic isocyanates, from a polyol component comprising at least one long polyol, at least one short diol and at least one mono-alcohol with a molecular weight of less than 300 with a double ethylene bond in its formula and at least one polymerization initiator.

Adhesive layer used in the manufacture of laminated glasses and

Preformed, energy-absorbing, scratch resistant, optical, flexible, and self-healing polyurethane sheets, which are adhesive under the influence of heat and pressure; bilayer glazing laminates and bilayer safety windshields including said sheets; wherein said polyurethane sheet is prepared preferably by reactive-casting on a horizontal support and formed preferably from a polyisocyanate monomer including about 2 to about 10 wt. % of urea groups.

Growing community of inventors

Villenave D'Ornon, France

Gerard M Daude