Patent · US Active

Copolymers of monocarboxylic acids and dicarboxylic acids, their preparation and use

US8497318B2 · kind B2 · utility

2Cited by

5References

12Claims

0Family size

Assignee

BASF SE

Inventors

Matthias Laubender · Schifferstadt, DE
Ewald Heintz · Schweigen-Rechtenbach, DE
Clarissa Seidl · Schifferstadt, DE
Bolette Urtel · Frankenthal (Pfalz), DE
Alexsandro Berger · Mannheim, DE

Key dates

Filing date	Jul 1, 2011
Grant date	Jul 30, 2013
Priority date	—
Expiry date	Sep 15, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F222/04
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to a process for preparing a polymer by free-radical polymerization of at least one ethylenically unsaturated monocarboxylic acid and/or a salt thereof, at least one ethylenically unsaturated dicarboxylic acid and/or an anhydride and/or a salt thereof, in the presence of hypophosphorous acid and/or a salt thereof. The invention also relates to a polymer composition obtainable by this process. The invention also relates to the use of such a polymer composition as detergent additive, e.g. as dispersant, scale inhibitor or sequestrant for laundry detergents.

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