The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 1984
Filed:
Mar. 08, 1983
Jean-Pierre Lampin, Ponthierry, FR;
Yves Leclaire, Veneux les Sablons, FR;
Abstract
The basic composition comprises, in solution in at least one organic solvent, with or without water, from 10 to 40% of a hard-enable organosilicic compound resulting from a first hydrolysis reaction achieved at a temperature lower than 50.degree. C. in the presence of a carboxylic acid and water on at least one R'Si(OR).sub.4 alkoxysilane with n=1 or 2, in association or without association with at least one Si(OR').sub.4 -alkoxysilane, then, a second hydrolysis at a temperature lower than 40.degree. C. after removal of the formed volatile solvents and addition of a less volatile solvent and at least one R''Si(OR.sub.1).sub.3 -alkoxysilane, said reaction being followed with the setting of the pH to between 3.5 and 5.5 by an organic base.