Patent · US Expired

Polymerizate composition and a method for producing the same

US7335709B1 · kind B1 · utility

1Cited by

5References

16Claims

0Family size

Assignee

Ashland Licensing and Intellectual Property LLC · US

Inventors

Helmut Brehm · Krefeld, DE
Hans-Georg Hartan · Kevelaer, DE

Key dates

Filing date	Aug 2, 2000
Grant date	Feb 26, 2008
Priority date	—
Expiry date	Apr 23, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F2/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to water-soluble, preferably powder-form polymer compositions which are obtained by continuous polymerization of at least one unsaturated monomer. At least one parameter that influences the polymerization is varied according to a recurrent pattern. The invention also relates to the use of the inventive polymer compositions and to a method for producing them.

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