Patent Number: 6,169,159

Title: Alcohol-blocked brominated bisphenol a epoxy resin flame retardants for carbonyl-containing thermoplastic resins

Abstract: A halogenated flame retardant for a thermoplastic resin with carbonyl linkages in the main chain such as polyethylene terephthalate or polybutylene terephthalate is obtained by the modification of a brominated bisphenol A epoxy resin optionally advanced with brominated bisphenol A by reaction of the epoxy groups with a C.sub.1 -C.sub.8 alcohol such as methanol or butanol to the extent that the ratio of unmodified epoxy groups to alcohol-modified epoxy groups is from 2/1 to 1/2.

Inventors: Kawamoto; Toshihiko (Tokyo, JP), Sato; Tetsunori (Tokyo, JP), Morikawa; Yoshiyuki (Tokyo, JP)

Assignee: Tohto Kasei Co., Ltd.

International Classification: C08L 67/02 (20060101); C08L 77/06 (20060101); C08L 77/00 (20060101); C08L 69/00 (20060101); C08L 67/00 (20060101); C08G 59/14 (20060101); C08G 59/00 (20060101); C08L 77/02 (20060101); C08K 007/14 (); C08L 067/03 (); C08L 069/00 (); C08L 077/00 ()

Expiration Date: 01/02/2018