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:
Aug. 20, 1991
Filed:
Nov. 29, 1990
Applicant:
Inventors:
James A Beck, Midland, MI (US);
Peter Lamont, Midland, MI (US);
Assignee:
Dow Corning Corporation, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
556405 ; 528 14 ; 528 23 ;
Abstract
Silylphosphate mixtures are prepared by slowly adding phosphoric acid to hexamethyldisiloxane under reflux while removing the by-produced water and after the phosphoric acid is added, the temperture is increased to from 150.degree. C. to 170.degree. C. to recover the silylphosphate mixture residue. The mixture has from 10 to 30 weight percent of a monosilyl phosphate of the formula