Yoshio Oda

TL;DR: In this article, a water and oil repellent capable of imprating a glass surface with water-repellency and stain resistance for a long period, by mixing water glass to a silane compound containing polyfluoroalkyl group is presented.

TL;DR: In this paper, a surface treating agent which can provide water repellency, oil repellent, resistance to contamination, etc. to a glass surface over a long period of time by consisting the agent of a silane compd. contg. polyfluoroalkyl group or partially hydrolyzed condensate thereof was presented.

TL;DR: A glass, having a low reflectance, prepared by forming a thin film consisting of a fluorosilicate compound of an amine containing a polyfluoroalkyl group on the glass surface, and capable of lasting the performance thereof for a long term.

Abstract: PURPOSE: To provide a treating agent which provides water repellency, oil repellency, resistance to contamination, low reflectivity, etc. to a glass surface by composing an agent of a silane compd. contg. polyfluoroalkyl group or a partially hydrolyzed compd. thereof, and a reaction product of water glass with a proton dovating acid. CONSTITUTION: For example, RfCH 2 CH 2 SiCl 3 is prepared as a silane compd. contg. polyalkyl group (Rf group) expressed by the formula. On the other hand, the product of reaction produced by reaction of the water glass selected from compsns. SiO 2 /NaO=0.5W4 as specified in JIS-K1408 in the presence of a proton dopating acid such as H 2 SO 4 is prepared. The above-described silane compd. contg. RF groups and the above-described product of reaction are mixed and agitated at a room temp. in a water-soluble solvent of an aprotic acid (e.g.; THF). The mixing ratio of the silane compd. contg. RF groups and the product of reaction in this case is 1:0.1W5 by weight. The resulted treating agent is prepd. in an optional form such as emulsion, solvent soln., aerosol or the like according to conventional methods. COPYRIGHT: (C)1983,JPO&Japio