Saint Gobain Isover

Isover Saint-gobain

Other

Serge Tetart

Philippe Espiard

Bernard Lericque

Vinay Malhotra

Bruno Mahieuxe

Jean-Louis Mallier

Pierre C Herault

Wayne Walliser

Susan G Watson

Domenic Tessari

Bruno Malhieuxe

Claire Labbe

The present invention relates to a liquid resin intended more particularly for the sizing of mineral fibers which exhibits a dilutability in water at 20&#xb0; C. at least equal to 1 000% and a level of free formaldehyde preferably of less than 0.4%, expressed as total weight of liquid, this resin being characterized in that it is composed essentially of condensates obtained from a phenolic compound, from formaldehyde and from an aminoalcohol according to the Mannich reaction. The invention also relates to a sizing composition including said resin, to the mineral fibers sized by means of this composition and to the products formed from the mineral fibers, in particular for thermal and/or sound insulation.

Aqueous solution of phenolic compound-formaldehyde-aminoalcohol resin, preparation method, mineral fiber sizing compositions containing said resin and resulting products

A phenol-formaldehyde resole resin is prepared using a high level of catalyst at a polymerization temperature of about 63&deg; C. The endpoint, measured by salt water tolerance, is selected so that the resulting resin has a water dilutability of 20:1 at neutral pH after storage for three weeks at a temperature of about 13&deg; C., with a free phenol level of no more than 0.50 percent.

Low emission formaldehyde resin and binder for mineral fiber insulation

A sizing composition which is a phenol-formaldehyde resin substantially free of urea or of a urea derivative and which has reduced emissions of isocyanates upon heating. Insulation products based on mineral wool, especially glass wool or rock wool, which are suitable for mass-produced thermal appliances and contain the sizing composition have reduced organic emissions during manufacturing and when used in thermal appliances.

Insulation product, especially thermal insulation product, and its manufacturing process

The invention relates to a resin composition based on a urea-modified phenol-formaldehyde resole which has a formaldehyde/phenol molar ratio of 2 to 5, exhibiting a free formaldehyde content lower than or equal to 3 percent (by weight relative to the total weight of the composition), a free phenol content lower than or equal to 0.5 percent and a dilutability measured at 20&deg; C., of at least 1000 percent and to a process for the preparation of this composition. This composition is characterized in that it contains an overcondensed resole obtained by the condensation of phenol, of formaldehyde, and optionally of urea in basic medium, until the product has a water dilutability at pH 9 that is lower than or equal to 2000 percent, or the product of neutralization of such as resole. The modification of an overcondensed phenolic resole by neutralization with boric acid according to the invention permits the dilutability of the resole to be increased. An application is for sizing composition s for products based on mineral wool with a reduction in atmospheric pollution upon use.

Phenolic resin for glue sizing composition, preparation method and glue sizing composition containing same

A glue composition comprises a heat-hardenable resin, urea and possibly one or several glue additives, and is characterized by the presence of an additional gluing compound is polyol having a functionality of at least equal to three. This glue can be used for mineral fibers in the manufacture of insulation products having improved properties.

Composition for gluing discontinuous mineral fibers in order to obtain

Growing community of inventors

Saint-Maximin, France

Serge Tetart