Patent · US Expired

Clear silicone microemulsions formed spontaneously

US6998424B2 · kind B2 · utility

17Cited by

10References

5Claims

0Family size

Assignee

Dow Corning Corporation · US

Inventors

Qian Feng · Midland, US
Zuchen Lin · Midland, US
Randal M. Hill · Midland, US

Key dates

Filing date	Oct 10, 2003
Grant date	Feb 14, 2006
Priority date	—
Expiry date	Dec 16, 2023

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2383/04
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Clear microemulsions are formed spontaneously by combining (i) water; (ii) a volatile siloxane; (iii) a long chain or high molecular weight silicone polyether; and, as an optional ingredient, (iv) a cosurfactant such as a monohydroxy alcohol, an organic diol, an organic triol, an organic tetraol, a silicone diol, a silicone triol, a silicone tetraol, and a nonionic organic surfactant. In an alternate embodiment, a non-volatile siloxane is included as an ingredient, and the silicone polyether is a long chain or high molecular weight silicone polyether, or a short chain or low molecular weight silicone polyether.

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