Patent · US Active

Method of preparing dispersions

US8888264B2 · kind B2 · utility

1Cited by

3References

20Claims

0Family size

Assignee

E.I. DU PONT DE NEMOURS AND COMPANY · US

Inventors

Harry J. Spinelli · Wilmington, US
Tristan Williams · Cary, US
Michael Stephen Wolfe · Wilmington, US
Howard Zakheim · Yeadon, US

Key dates

Filing date	Jul 29, 2010
Grant date	Nov 18, 2014
Priority date	—
Expiry date	Aug 6, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09D11/322
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A process for preparing dispersions of particles, especially aqueous dispersions is described. The process relates to a dispersion process where a polar solvent is added during the dispersion process such that the hydrogen bonding solubility parameter component, δh, of the initial dispersion mixture increases at least 1.5 units. When the polar solvent added is water the dispersion process is called a Solvent-to-Water Process.

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