C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 95/00 (2006.01)
Patent
CA 2594227
The invention relates to charged bituminous mastics that are used in industrial applications, particularly in the manufacture of indoor or outdoor coatings used for sealing and/or damping vibrations and/or thermal insulation and/or soundproofing and/or fire protection (fire-proofing). The aim of the invention is to provide a mastic which is deformation-resistant when thermally charged and which is also static in ambient temperature conditions prevailing during laying and when ambient temperature is 40 °C, which also holds well when cold, offering good dimensional stability. In order to achieve said aim, styrene-indene copolymer resin having a Tg of 40 - 150 °C and a penetrability at 50 °C of< 10 is used as a structuring agent A of a bituminous mastic comprising bitumen B, a charge C and a polymer D.
La présente invention est relative aux mastics bitumineux chargés et utilisés dans le domaine des applications industrielles, notamment dans la fabrication de revêtements intérieurs ou extérieurs, employés pour l'étanchéité et/ou l'amortissement de vibrations et/ou l'isolation thermique et/ou phonique et/ou la protection contre le feu (ignifugation). Le but de l'invention est de proposer un mastic d'une part résistant à la déformation sous charge thermique et également statique dans les conditions de température ambiante régnant lors de la pose et lorsque la température ambiante devient > 40~C, et, d'autre part, ayant une bonne tenue à froid et une bonne stabilité dimensionnelle. Pour atteindre ce but, l'invention vise l'utilisation de Tg de résine copolymère styrène-indène comprise entre 40 et 150~C et de pénétrabilité à 50~C <= 10, comme agent structurant A d'un mastic bitumineux comprenant un bitume B, une charge C et un polymère D.
Lapalu Laurence
Vincent Regis
Fetherstonhaugh & Co.
Total France
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