Patent · US Expired

High purity branched alkylsilsesquioxane fluids

US5932231A · kind A · utility

6Cited by
7References
22Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 11, 1997
Grant dateAug 3, 1999
Priority date—
Expiry dateJul 11, 2017

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC08G77/045
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

The invention provides high purity branched alkylsilsesquioxane containing fluids of the general formula Me.sub.3 SiO--(Me.sub.3 SiORSiO).sub.x --SiMe.sub.3, wherein Me is methyl, R is a monovalent hydrocarbon substituent, and x is 1 to 6, and an essentially zero waste process for their synthesis in quantitative yield; and especially n-octylsilsesquioxane containing fluids which are structural analogs of phenylsilsesquioxane containing fluids of the general formula Me.sub.3 SiO--(Me.sub.3 SiOPhSiO).sub.x --SiMe.sub.3, wherein Me is methyl, Ph is phenyl, x is 1 to 6, and have substantially identical sensory properties to their phenylsilsesquioxane counterparts.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.