Polyester compositions, method of manufacture, and uses thereof

US7812077B2 · kind B2 · utility

Assignee

• Sabic Innovative Plastics B.V. · NL

Inventors

• Pravin Borade · Jamkhed, IN
• Robert R. Gallucci · Greenwood, US
• Rama Konduri · Evansville, US
• Johannes H. G. M. Lohmeijer · Hoogerheide, NL
• Subodh Kumar Pal · Savanuru, IN
• Veeraraghavan Srinivasan · Bengaluru, IN
• Chris van der Weele · Sommelsdijk, NL
• Gerrit de Wit · Ossendrecht, NL

Key dates

• Filing date: Oct 11, 2007
• Grant date: Oct 12, 2010
• Expiry date: Oct 11, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L79/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A composition comprises 20 to 80 wt. % of a polyester component comprising a modified polybutylene terephthalate random copolymer derived from a polyethylene terephthalate component selected from polyethylene terephthalate and polyethylene terephthalate copolymers and having at least one residue derived from the polyethylene terephthalate component; from 5 to 35 wt. % of a flame retardant phosphinate (I) or (II)(R1)(R2)(PO)—O]−mMm+  (I)[(O—POR1)(R3)(POR2—O)]2−nMm+x  (II),and/or a flame retardant polymer thereof, wherein R1 and R2 are independently are H, C1-C6-alkyl, or C6-C10-aryl; R3 is C1-C10, alkylene, C6-C10-arylene, -alkylarylene or -arylalkylene; M is an alkaline earth metal, alkali metal, Al, Ti, Zn, Fe, or boron; m is 1, 2, 3 or 4; n is 1, 2, or 3; and x is 1 or 2; 1 to 25 wt. % of a melamine polyphosphate, melamine cyanurate, melamine pyrophosphate, and/or melamine phosphate; and more than 0 to 25 wt. % of a polyetherimide.