C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 3/18 (2006.01) C09D 183/08 (2006.01)
Patent
CA 2303005
A surface treatment composition excellent in storage stability and waterdrop repellency. The composition comprises as the essential ingredient partial hydrolyzates of a reactive fluorosilane, such as C8F17CH2CH2Si(OCH3)3, which have a molecular weight of M as measured by GPC, and in which the content of partial hydrolyzates having a molecular weight in the range of 300 to 2M is below 70 % and that of partial hydrolyzates having a molecular weight in the range of 6M to 100,000 is below 10 %. The method of surface treatment comprises treating a surface of a glass with the surface treatment composition. The substrate is one treated with the surface treatment composition. The article, e.g., one for transport apparatus, contains the substrate fitted thereto.
L'invention concerne une composition de traitement de surface présentant une excellente stabilité au stockage et repoussant efficacement les gouttes d'eau. Les ingrédients essentiels de cette composition sont des hydrolysats partiels d'un fluorosilane réactif, par exemple C¿8?F¿17?CH¿2?CH¿2?Si(OCH¿3?)¿3?, présentant un poids moléculaire M tel que mesuré par GPC, la teneur en hydrolysats partiels dont le poids moléculaire varie entre 300 et 2M étant inférieure à 70 %, et la teneur en hydrolysats partiels dont le poids moléculaire se situe entre 6M et 100 000 étant inférieure à 10 %. L'invention concerne également un procédé de traitement de surface, consistant à traiter une surface de verre au moyen de la composition de traitement de surface susmentionnée. L'invention concerne enfin un substrat traité au moyen de cette composition, ainsi qu'un article, par exemple destiné à un appareil de transport, contenant ce substrat.
Gunji Fumiaki
Yoneda Takashige
Asahi Glass Company Ltd.
Smart & Biggar
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