Patent · US Active

Colloidal dispersions of inorganic particles in liquid phases comprising ampholytic copolymers

US8293829B2 · kind B2 · utility

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2References

20Claims

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Assignee

RHODIA OPERATIONS · FR

Inventors

Guillaume Criniere · Braine-l'Alleud, BE
Claire Pitois · Sundbyberg, SE
Mathias Destarac · Paris, FR

Key dates

Filing date	Oct 29, 2008
Grant date	Oct 23, 2012
Priority date	—
Expiry date	Jan 16, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J13/0047
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Colloidal dispersions of inorganic particles in a liquid phase include ampholytic copolymers containing at least one macromolecular chain B and a moiety A bonded to a single end thereof and in which the macromolecular chain B includes cationic units Bc, deriving from cationic monomers Bc and the moiety A is a polymeric or non-polymeric group containing at least one anionic or potentially anionic group; such dispersions may have a positive zeta potential within a pH ranging from 1 to 11.

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