[EN] LOW TEMPERATURE FOAMABLE FLAME RETARDANT POLYCARBONATE COMPOSITION<br/>[FR] COMPOSITION DE POLYCARBONATE IGNIFUGE POUVANT FORMER UNE MOUSSE À BASSE TEMPÉRATURE
申请人:SHPP GLOBAL TECH BV
公开号:WO2021198855A1
公开(公告)日:2021-10-07
A foamable polycarbonate composition comprising 5 to 60 wt% of a poly(siloxane) block copolymer comprising a poly(carbonate-siloxane) comprising 50 to 99 wt% of bisphenol A carbonate units and 1 to 50 wt% of dimethylsiloxane units, each based on the weight of the poly(carbonate-siloxane),a poly(ester-carbonate-siloxane) comprising bisphenol A carbonate units, isophthalate-terephthalate-bisphenol A ester units, and 5 to 200 dimethyl siloxane units, or a combination thereof; 2 to 20 wt% of an oligomeric or polymeric aromatic organophosphorous compound, optionally, 1 to 93 wt% of an auxiliary component comprising a poly(alkylene ester), a poly(ester-carbonate), a homopolycarbonate, or a combination thereof; optionally, up to 10 wt% of an additive composition, wherein the composition has a glass transition temperature of 140 ºC and below measured using differential scanning calorimetry, and wherein a foamed sample of the composition has an average cell size of 10 nanometers to 20 micrometers.