Patent · US Active

Strontium carbonate dispersion and redispersible powder obtained therefrom

US8299157B2 · kind B2 · utility

0Cited by

9References

27Claims

0Family size

Assignee

Solvay Infra Bad Hoenningen GmbH · DE

Inventors

Karl Koehler · Bad Salzdetfurth, DE
Ferdinand Hardinghaus · Bad Honnef, DE

Key dates

Filing date	Aug 9, 2005
Grant date	Oct 30, 2012
Priority date	—
Expiry date	Mar 20, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2991
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention discloses dispersions of preferably modified strontium carbonate in organic liquids, for example in alcohols, ketones or particularly methylene chloride. The dispersions are usable for the preparation of polymers which have reduced birefringence or no birefringence and are therefore suitable for optical applications.The powder obtainable after the removal of the organic liquid can surprisingly be converted back to a dispersion with little energy.

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