Method for making self-extinguishing alkenyl aromatic resin compositions comprising incorporating therein an organic bromine-containing compound and an organic peroxide

Claim 1

A METHOD FOR MAKING A SELF-EXTINGUISHING POLYMER COMPOSITION WHIRH COMPRISES (1) HEATING DISCRETE PARTICLES OF FAMMABLE THERMOPLASTIC ALKENYL AROMATIC RESIN OF THE GROUP CONSISTING OF (A) HOMOPOLYMERS AND COPOLYMERS OF AT LEAST 70 PERCENT BY WEIGHT OF AT LEAST ONE MONOVINYL AROMATIC COMPOUND HAVING THE GENERAL FORMULA AR-CH=CH2 WHEREIN AR REPRESENTS AN AROMATIC RADICAL OF THE GROUP CONSISTING OF AROMATIC HYDROCARBON AND NUCLEAR HALOGENATED AROMATIC HYDROCARBON RADICALS OF THE BENZENE SERIES WHEREIN THE VINYL GROUP IS DIRECTED ATTACHED TO A CARBON ATOM OF THE AROMATIC NUCLEUS AND NOT MORE THAN 30 PERCENT BY WEIGHT OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, METHYLMETHACRYLATE AND ALPHA-METHYLSTYRENE, (B) COPOLYMERS OF FROM 99.5 TO 99.99 PERCENT BY WEIGHT OF AT LEAST ONE SUCH MONOVINYL AROMATIC COMPOUND AND FROM 0.5 TO 0.01 PERCENT BY WEIGHT OF A DIVINYL AROMATIC HYDROCARBON OF THE BENZENE SERIES AND (C) POLYMER COMPOSITIONS CONSISTIING OF FROM 90 TO 99 PERCENT BY WEIGHT OF A LEAST ONE SUCH MONOVINYL AROMATIC COMPOUND AND FROM 10 TO 1 PERCENT BY WEIGHT OF A RUBBER OF THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBERS WHICH ARE SOLUBLE IN MONOMERIC STYRENE, SAID PARTICLES OF SAID ALKENYL AROMATIC RESIN CONTAINING (A) FROM 0 TO 0.3 GRAM MOLECULAR PROPORTION OF A VOLATILE ORGANIC COMPOUND OF THE GROUP CONSISTING OF SATURATED ALIPHATIC HYDROCARBONS AND PERCHLOROFLUOROCARBONS HAVING A MOLECULAR WEIGHT OF AT LEAST 58 AND BOILING AT TEMPERATURES BELOW 95*C. AT 760 MILLIMETERS ABSOLUTE PRESSURE, (B) FROM 0 TO 10 PERCENT BY WEIGHT OF AN ORGANIC BROMINE-CONTAINING COMPOUND HAVING A PLURALITY OF OF BROMINE ATOMS IN A RADICAL OF THE GROUP CONSISTING OF ALIPHATIC AND CYCLO-ALIPHATIC RADICALS, SAID BROMINE CONSTITUTING AT LEAST 45 PERCENT BY WEIGHT OF THE MOLECULE, AND (C) FROM 0 TO 2 PERCENT BY WEIGHT OF AN ORGANIC PEROXIDE BOILING AT TEMPERATURES ABOVE 100*C. AT 760 MILLIMETERS ABSOLUTE PRESSURE. HAVING A HALF LIFE OF AT LEAST 2 HOURS AT 100*C. AS DETERMINED IN BENZENE, CONTAINING AT LEAST 6 CARBON ATOMS IN THE MOLECULE, HAVING AT LEAST ONE TERTIARY CARBON ATOM ATTACHED TO A OXYGEN ATOM OF THE PEROXY GROUP AND HAVING THE GENERAL FORMULAR

Claim 2

A METHOD FOR MAKING A SELF-EXTINGUISHING POLYMER COMPOSITION WHIRH COMPRISES (1) HEATING DISCRETE PARTICLES OF FAMMABLE THERMOPLASTIC ALKENYL AROMATIC RESIN OF THE GROUP CONSISTING OF (A) HOMOPOLYMERS AND COPOLYMERS OF AT LEAST 70 PERCENT BY WEIGHT OF AT LEAST ONE MONOVINYL AROMATIC COMPOUND HAVING THE GENERAL FORMULA AR-CH=CH2 WHEREIN AR REPRESENTS AN AROMATIC RADICAL OF THE GROUP CONSISTING OF AROMATIC HYDROCARBON AND NUCLEAR HALOGENATED AROMATIC HYDROCARBON RADICALS OF THE BENZENE SERIES WHEREIN THE VINYL GROUP IS DIRECTED ATTACHED TO A CARBON ATOM OF THE AROMATIC NUCLEUS AND NOT MORE THAN 30 PERCENT BY WEIGHT OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE, METHYLMETHACRYLATE AND ALPHA-METHYLSTYRENE, (B) COPOLYMERS OF FROM 99.5 TO 99.99 PERCENT BY WEIGHT OF AT LEAST ONE SUCH MONOVINYL AROMATIC COMPOUND AND FROM 0.5 TO 0.01 PERCENT BY WEIGHT OF A DIVINYL AROMATIC HYDROCARBON OF THE BENZENE SERIES AND (C) POLYMER COMPOSITIONS CONSISTIING OF FROM 90 TO 99 PERCENT BY WEIGHT OF A LEAST ONE SUCH MONOVINYL AROMATIC COMPOUND AND FROM 10 TO 1 PERCENT BY WEIGHT OF A RUBBER OF THE GROUP CONSISTING OF NATURAL RUBBER AND SYNTHETIC RUBBERS WHICH ARE SOLUBLE IN MONOMERIC STYRENE, SAID PARTICLES OF SAID ALKENYL AROMATIC RESIN CONTAINING (A) FROM 0 TO 0.3 GRAM MOLECULAR PROPORTION OF A VOLATILE ORGANIC COMPOUND OF THE GROUP CONSISTING OF SATURATED ALIPHATIC HYDROCARBONS AND PERCHLOROFLUOROCARBONS HAVING A MOLECULAR WEIGHT OF AT LEAST 58 AND BOILING AT TEMPERATURES BELOW 95*C. AT 760 MILLIMETERS ABSOLUTE PRESSURE, (B) FROM 0 TO 10 PERCENT BY WEIGHT OF AN ORGANIC BROMINE-CONTAINING COMPOUND HAVING A PLURALITY OF OF BROMINE ATOMS IN A RADICAL OF THE GROUP CONSISTING OF ALIPHATIC AND CYCLO-ALIPHATIC RADICALS, SAID BROMINE CONSTITUTING AT LEAST 45 PERCENT BY WEIGHT OF THE MOLECULE, AND (C) FROM 0 TO 2 PERCENT BY WEIGHT OF AN ORGANIC PEROXIDE BOILING AT TEMPERATURES ABOVE 100*C. AT 760 MILLIMETERS ABSOLUTE PRESSURE. HAVING A HALF LIFE OF AT LEAST 2 HOURS AT 100*C. AS DETERMINED IN BENZENE, CONTAINING AT LEAST 6 CARBON ATOMS IN THE MOLECULE, HAVING AT LEAST ONE TERTIARY CARBON ATOM ATTACHED TO A OXYGEN ATOM OF THE PEROXY GROUP AND HAVING THE GENERAL FORMULAR