Solid state polymerization process for polyester with phosphinic acid compounds

US8436131B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Paul A. Odorisio · Leonia, US
• Stephen Mark Andrews · New Fairfield, US
• Thomas F. Thompson · Highland Mills, US
• Si Wu · Ossining, US
• Paragkumar Thanki · Jamkhed, IN
• Deepak Rane · Mumbai, IN
• Delina Joseph · Jamkhed, IN
• Jianzhao Wang · Yorktown Heights, US

Key dates

• Filing date: Aug 7, 2012
• Grant date: May 7, 2013
• Expiry date: Aug 7, 2032

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/87
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Disclosed are phosphinic acid compounds of formula I, II or IIIwhere R1 and R1′ are for instance straight or branched C1-C50alkyl, R2 is for instance straight or branched C22-C50alkyl, R3 and R3′ are for instance straight or branched C1-C50alkyl, R4 is for instance straight or branched C1-C50alkylene and m is from 2 t 100. Also disclosed are polyester compositions comprising the compounds of formula I, II and III.