Saint-gobain Vitrage

Saint-gobain Glass France

Saint-gobain Industries

Daniel Dages

Andr&eacute; Beyrle

Robert Degeilh

André Beyrle

Maurice Dran

Aline DeJean

Anne-Valentine Veret-Lemarinier

Serge Le Gravier

The present invention relates to a process for manufacturing recyclable black enamels that contain at least zinc, in which process glass forming materials comprising at least bismuth, silicon, boron and manganese are melted, at temperatures greater than about 900&#xb0; C., and then a glass frit comprising at least zinc is added to the mixture obtained after this direct melting. The invention also relates to zinc-based recyclable black enamel compositions.

Enamel composition, manufacturing process and resulting enamelled products

The present invention relates to a process for manufacturing recyclable black enamels that contain at least zinc, in which process glass forming materials comprising at least bismuth, silicon, boron and manganese are melted, at temperatures greater than about 900&deg; C., and then a glass frit comprising at least zinc is added to the mixture obtained after this direct melting. The invention also relates to zinc-based recyclable black enamel compositions.

Process for manufacturing a recyclable zinc-containing black enamel composition

Process for enamelling glass substrates, enamel composition used and products obtained

Polyvinylbutyral useful for the production of laminated glasses containing a crosslinking agent capable of making the polyvinylbutyral very slightly meltable or nonmeltable. The material according to the invention may contain a plasticizer and is particularly resistant to fire and allows one to produce a laminated material with a good resistance to impact and to fire.

Intermediate fire-resistant film and its use in a laminated glass

A polyvinylbutyral-based thermoplastic composition which is useful for forming thermoadhesive films for adhering bases onto a glazing. The composition comprises a polyvinylbutyral resin with a hydroxyl group content of between 22 and 26% by weight, a plasticizer for the resin and an orthosubstituted phenolic antioxidizing agent. This composition is useful for forming a thermoadhesive film having good adhesion at the surface of the glass and good stability at high temperatures.

Polyvinylbutyral-based thermoplastic composition, useful for fixing

Process for the production of a plasticized polyvinyl butyral particularly used for gluing a base onto glazings. The polyvinyl butyral is obtained by the reaction of a butyric aldehyde with a polyvinyl alcohol, demonstrating a level of hydrolysis greater than 95%, and a viscosity greater than 50 cP, in the presence of an acid catalyst and an emulsifier, the quantity of butyric aldehyde being such that the level of hydroxylation of the polyvinyl butyral obtained is between 22 and 26%.

Process for the production of a plasticized polyvinyl butyral for gluing

This invention relates to a novel group of plasticizers for polyvinyl butyral wherein the plasticizer comprises a mixture of at least one triethylene glycol diester of a monocarboxylic acid having a carbon chain comprising 7 or 8 carbon atoms and at least one dialkyl adipate in which the alkyl group contains from 3 to 8 carbon atoms or at least one alkyl alkylaryl adipate.

Plasticizers for polyvinyl butyral

This invention relates to a novel group of plasticizers for polyvinyl butyral wherein the plasticizer comprises a mixture of at least one alkyl alkylaryl adipate and at least one dialkyl adipate in which the alkyl group contains 3 to 8 carbon atoms.

A panel of a plurality of electrically connected photocells wherein each photocell has a lower face, a side face and a radiation receiving face, is produced by (a) embedding at least the lower faces and side faces of the photocells and their electrical connectors in a thermoplastic resin in particulate form which resin becomes transparent upon fusion; (b) enclosing the photocells embedded in step (a) between two rigid sheets to form a sandwich-type assembly, with at least the rigid sheet enclosing the receiving faces of the photocells being optically transparent; (c) disposing the stacked assembly formed in step (b) within a flexible bag; (d) subjecting the interior of the flexible bag to a vacuum while applying relatively high pressure to the outside of the bag, and raising the temperature within the bag to fuse the thermoplastic resin particles; and (e) cooling the contents of the bag to solidify the resin and form thereby the panel comprising the photocells adhesively embedded in the solidified resin between the rigid sheets, and restoring atmospheric pressure to the interior of the bag.

Process for manufacture of solar photocell panels and panels obtained

A plasticizer for polyvinyl butyral wherein the plasticizer is an alkyl alkylaryl adipate and particularly a benzyl alkyl adipate. The plasticized polyvinyl butyral is specially useful in the manufacture of transparent sheets and particularly as an interlayer for laminated safety glass.

Growing community of inventors

Les Mureaux, France

Daniel Dages