Inherent flame retardant rigid polyurethane foam

US9718937B2 · kind B2 · utility

Assignee

• XIAMEN UNIVERSITY · CN

Inventors

• Lizong Dai · Xiamen, CN
• Cong Xie · Xiamen, CN
• Wei'ang Luo · Xiamen, CN
• Birong Zeng · Fujian, CN
• Yiting Xu · Xiamen, CN
• Xinyu Liu · Nanhu, CN
• Kaibin He · Xiamen, CN
• Qi Li · 流花街道, CN
• Yuanyuan Li · Beijing, CN
• Xianming Chen · Longbeilingcun, CN

Key dates

• Filing date: Dec 5, 2014
• Grant date: Aug 1, 2017
• Expiry date: Dec 5, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2483/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention provides a kind of inherent flame retardant rigid polyurethane foam. The production formula comprises 100 to 105 pbw of polyether polyol and reactive phosphorus-containing flame retardant, 2.5 to 3.5 pbw of amine catalyst, 0.8 to 2.5 pbw of tertiary amine catalyst, 0.8 to 2.5 pbw of foam stabilizer, 0.5 to 1.5 pbw of blowing agent, 135 to 150 pbw of isocyanates, and 0.05 to 0.1 pbw of organo-metallic catalyst, wherein the reactive phosphorus-containing flame retardant is 9,10-dihydro-9-oxa-10-phosphaphenanthrene-4-hydroxybenzyl alcohol. The active monomers containing flame retarding elements are introduced into main chain and side chain of PU for modification, which permanently improves the flame retardancy of PU without obvious effect on other performance of PU matrix.