Patent · US Active

Use of polyethylenimines as additive in aqueous suspensions of calcium carbonate-comprising materials

US8871018B2 · kind B2 · utility

3Cited by

3References

43Claims

0Family size

Assignee

OMYA INTERNATIONAL AG · CH

Inventors

Matthias Buri · Rothrist, CH
Samuel Rentsch · Aarburg, CH
Patrick A.C. Gane · Rothrist, CH

Key dates

Filing date	Jan 24, 2011
Grant date	Oct 28, 2014
Priority date	—
Expiry date	Oct 10, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K2003/265
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Use of at least one polyethylenimine as an additive in an aqueous suspension, containing from 25 to 62 vol. % of at least one calcium carbonate-comprising material, wherein the use provides improved stability with regard to the conductivity of the suspension.

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