Patent ID: 9493624
Filing Date: 2016-11-15
CPC Classification: C08J

Claim Text:
1. An extruded polymer foam comprising: a. a polymer matrix wherein greater than 50 weight-percent of all polymers in the polymer matrix are alkenyl aromatic polymers; b. 0.8 weight-percent or more and 1.4 weight-percent or less of bromide within the polymer matrix based on polymer matrix weight; c. 0.05 weight-percent or more and 0.5 weight-percent or less of a hydrobromic acid scavenger dispersed within the polymer matrix based on polymer matrix weight; and d. less than 0.1 weight-percent of C—C and O—O labile organic compounds dispersed in the polymer matrix based on polymer matrix weight; and e. 0.5 weight-percent or more and up to 1.5 wt % graphite dispersed within the polymer matrix based on total polymer matrix weight; and characterized by the extruded polymer foam passing the German B2 fire test of DIN 4102.