Patent · US Active

Hydrophilic silicones

US7687592B2 · kind B2 · utility

3Cited by

12References

25Claims

0Family size

Assignee

Group One Limited · GB

Inventors

Fred Runnels · Seattle, US
Walter B. Dandliker · Village of La Jolla, US
Leonard William Luria · Tampa, US

Key dates

Filing date	Oct 4, 2006
Grant date	Mar 30, 2010
Priority date	—
Expiry date	Oct 25, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G77/38
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for producing a soluble silicone product is provided. The process includes the steps of chemically reacting a polydialkoxysiloxane with an aliphatic alcohol with or without a catalyst in a reaction mixture, removing produced alcohol from the mixture; recovering the water soluble portion of produced silicone product, purifying the water soluble portion; and recovering hydrophilic material in the water insoluble portion.

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