Halogen free, flame retardant compositions

US8920929B2 · kind B2 · utility

Assignee

• DOW GLOBAL TECHNOLOGIES LLC · US

Inventors

• Given Jing Chen · Shanghai, CN
• Wilson Xiao Wei Yan · Hangzhou City, CN
• Bin Li · Columbus, US
• Lan Lu · Shanghai, CN
• Weiming Ma · Shanghai, CN
• Lotus Hua Huang · Shanghai, CN
• David Hong Fei Guo · Shanghai, CN

Key dates

• Filing date: Dec 18, 2009
• Grant date: Dec 30, 2014
• Expiry date: Mar 20, 2030

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31692
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present disclosure provides a flexible, halogen-free, flame retardant composition. The composition includes from about 25 wt % to about 95 wt % of a thermoplastic polyurethane (TPU); from about 5 wt % to about 50 wt % of an olefin block copolymer (OBC); and from about 30 wt % to about 70 wt % of a flame retardant. The flame retardant is selected from resorcinol bis(diphenyl 5 phosphate) (RDP), bis diphenyl phosphate (BDP), bisphenol-A bis(diphenyl phosphate) (BPADP), aluminum trihydrate (ATH), a nitrogen/phosphorus-based halogen-free flame retardant, epoxidized novolac resin, and combinations thereof. The composition requires no compatibilizer for the TPU and OBC. The composition finds application in wire and cable structures.