C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 28/14 (2006.01) C04B 20/10 (2006.01) C04B 40/00 (2006.01)
Patent
CA 2725968
The present invention relates to hydrophobic gypsum and to a process for making gypsum hydrophobic, in particular it relates to a powdered hydrophobing additive, a hydrophobic gypsum composition and method for preparing same using granules containing organosilicon compounds as hydrophobing additives. The invention provides a granulated additive for rendering gypsum material hydrophobic, comprising a particulate carrier on which is deposited an organosilicon component, a binder polymer and an emulsifier for the organosilicon component. Such a granulated hydrophobic additive is able to provide a high initial hydrophobicity to gypsum materials to which it is applied and that the obtained hydrophobicity can last during a long period of time.
La présente invention porte sur du gypse hydrophobe et sur un procédé pour rendre du gypse hydrophobe, en particulier sur un additif rendant hydrophobe en poudre, sur une composition de gypse hydrophobe et sur des procédés pour les fabriquer à l'aide de granulés contenant des composés d'organosilicium en tant quadditifs rendant hydrophobe. L'invention porte sur un additif granulé pour rendre une matière de gypse hydrophobe, comprenant un support particulaire sur lequel est déposé un composant d'organosilicium, un polymère liant et un émulsifiant pour le composant d'organosilicium. Un tel additif hydrophobe granulé est apte à conférer un caractère hydrophobe initial élevé à des matières de gypse auxquelles il est appliqué et à faire en sorte que le caractère hydrophobe obtenu puisse durer pendant longtemps.
Gallez Laurence
Lecomte Jean-Paul
Sarrazin Marie-Jose
Thibaut Marc
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Dow Corning Corporation
LandOfFree
Gypsum materials does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Gypsum materials, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gypsum materials will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1717478