Ethylenebis(hydroxyalkylphosphinic acid) and salts thereof

US8084518B2 · kind B2 · utility

Assignee

• Clariant Finance (BVI) Limited · VG

Inventors

• Harald Bauer · Ehningen, DE
• Werner Krause · Plantsville, US
• Peter Staniek · Binzen, DE

Key dates

• Filing date: Oct 6, 2007
• Grant date: Dec 27, 2011
• Expiry date: Nov 4, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T442/3976
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to an ethylenebis(hydroxyalkylphosphinic acid) and salts thereof. The acid has the general formula: A-P(O)(OX)—CR1R2—CR3R4—P(O)(OX)-A. Variable A is CR5R6—OH. Variables R1, R2, R3, R4, R5, and R6 are the same or different, and denote independently from each other H, C1-C20 alkyl, C6-C20 aryl, or C6-C20 aralkyl, so long as at least one of R1 and R2 is H and at least one of R3 and R4 is H. Variable X denotes H, an alkali metal, an element of main or transition group 2, an element of main or transition group 3, an element of main or transition group 4, an element of main or transition group 5, an element of transition group 6, an element of transition group 7, an element of transition group 8 and/or a nitrogen base. Also disclosed are a method for producing same and the use thereof.