PROCESS TECHNOLOGY FOR RECOVERING BROMINATED STYRENIC POLYMERS FROM REACTION MIXTURES IN WHICH THEY ARE FORMED AND/OR CONVERTING SUCH MIXTURES INTO PELLETS OR INTO GRANULES OR PASTILLES

The invention is directed to pellets of unadulterated brominated anionic styrenic polymer having the following characteristics: A) a bromine content of at least about 50 wt%; B) an average crush strength in the Crush Strength Test of at least about 28 pounds per square inch; C) a particle size range...

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Bibliographische Detailangaben
Hauptverfasser:	Kolich, Charles, H, Peters, Bruce, C, Mack, Arthur, G, Balhoff, John, F, Herndon, Jr., Robert, C, Lee, David, A, Luther, Douglas, W, Lin, Ronny, W
Format:	Patent
Sprache:	eng ; hun
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MAKING GRANULES OR PREFORMS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL WORKING-UP
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Beschreibung
Zusammenfassung:	The invention is directed to pellets of unadulterated brominated anionic styrenic polymer having the following characteristics: A) a bromine content of at least about 50 wt%; B) an average crush strength in the Crush Strength Test of at least about 28 pounds per square inch; C) a particle size range in which at least about 70 wt% of the pellets are retained on a standard US No. 40 sieve and no more than about 30 wt% are retained on a standard US No. 5 sieve, which pellets can be prepared by brominating at least one anionic styrenic polymer having a GPC weight average molecular weight (Mw) in the range of about 2000 to about 200,000 and a GPC polydispersity in the range of 1 to about 2. Further, the invention is directed to pellets of unadulterated brominated styrenic polymer wherein the unadulterated brominated styrenic polymer is prepared by brominating at least one free-radically produced styrenic polymer having a GPC weight average molecular weight (Mw) in the range of about 30,000 to about 500,000 and a GPC polydispersity in the range of 1 to about 10, and wherein the brominated styrenic polymer formed in said process has a bromine content of at least about 50 wt%.