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EP0178191A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Organosilicon resins containing disilanes and having mechanical and thermal properties, and their use, especially in water-proofing building materials

Assignee: Rhodia Chimie SAS
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Filing: 1985-05-09
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Granted: —
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Expires: 2005-05-09
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Abstract

Abstract Translated from French La présente invention concerne une résine organosilicique à motifs disilaniques, obtenue par cohydrolyse et condensation en milieu solvant hétérogène d'un mélange d'organochlorosilanes et d'organochlorodisilanes, caractérisée en ce que ledit mélange comporte: a) de 10 à 70% molaire de diorganodichlorosilane de formule R2SiCl2, les radicaux R identiques ou différents étant choisis parmi les radicaux méthyle et phényle, b) de 0 à 50% molaire d'un organotrichlorosilane de formule RSiCl3, le radical R ayant la même signification que sous a ci-dessus, c) de 30 à 70% molaire de méthylchlorodisilanes comportant au moins 30% molaire de tétrachlorodiméthyl-1 ,2 disilane. La résine présentant une fonctionnalité comprise entre 2,2 et 3 selon l'invention est utilisable comme poudre à mouler, pour l'hydrofugation des textes sous forme d'une dispersion aqueuse et pour l'hydrofugation des bâtiments sous forme de solution dans des solvants organiques. The present invention relates to an organosilicon resin with disilane units, obtained by cohydrolysis and condensation in a heterogeneous solvent medium of a mixture of organochlorosilanes and organochlorodisilanes, characterized in that said mixture comprises: a) from 10 to 70 mol% of diorganodichlorosilane of formula R2SiCl2, the radicals R being identical or different being chosen from the methyl and phenyl radicals, b) from 0 to 50 mol% of an organotrichlorosilane of formula RSiCl3, the radical R having the same meaning as under a above, c ) from 30 to 70 mol% of methyl chlorodisilanes comprising at least 30 mol% of tetrachlorodimethyl-1,2 disilane. The resin having a functionality of between 2.2 and 3 according to the invention can be used as a molding powder, for water repellency of texts in the form of an aqueous dispersion and for water repellency of buildings in the form of a solution in solvents. organic.

Inventors

  • 👤 Hugues Porte

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 20:49
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/46; C04B41/49; C04B41/4905; C04B41/495; C04B41/4955; C04B24/00; C04B24/40; C04B24/42; C08; C08G; C08G77/00; C08G77/04; C08G77/06; C08G77/48

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

FR1023918A Cited
FR1024086A Cited
FR1081726A Cited

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