Flame-retarded foamable styrene-based resin compositions

摘要

In a flame-retarded foamable styrene-based resin composition comprising a bromine-containing flame retardant, the flame retardant is a mixture of (a) an organic bromine-containing compound having a 2,3-dibromopropyl group or an organic bromine-containing compound having a bromine content of greater than 60 wt% in which all bromine atoms are attached to a benzene ring, and (b) an organic bromine compound having a 2,3-dibromo-2-alkylpropyl group. The composition comprises this mixture in amount from 0.5 to 10 parts by weight per 100 parts by weight of the styrene-based resin. The composition exhibits high flame retardant and heat stabilizing effects yet allowing recycling.

主权项

1. A flame-retarded foamable styrene-based resin composition comprising a bromine-containing flame retardant and a blowing agent, wherein said bromine-containing flame-retardant is a mixture of 25 to 90 wt% of (a) an organic bromine-containing compound having a 2,3-dibromo-propyl group or an organic bromine-containing compound having a bromine content of greater than 60 wt% in which all bromine atoms are attached to a benzene ring, and the balance of (b) an organic bromine-containing compound having a 2,3-dibromo-2-alkylpropyl group, and wherein said composition comprises said mixture in an amount from 0.5 to 10 parts by weight per 100 parts by weight of said styrene-based resin.