METHOD FOR PRODUCTION OF HIGH-IMPACT POLYSTYRENE

FIELD: instrumentation engineering. SUBSTANCE: method for production of high-impact polystyrene includes preparation of elastomer solution in styrene, thermal polymerization and suspension polymerization. In the course of polymerization relation K=x 0.000138, K is within 2.5-18.5, where η is prepoly...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Demidova V.A, Rumjantsev S.G, Belomutskaja O.K, Burdejnaja T.A, Rozhavskij M.G, Amosov V.V, Rupyshev V.G, Alekseeva L.V, Ballova G.D, Nikitin Ju.V
Format:	Patent
Sprache:	eng ; rus
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	FIELD: instrumentation engineering. SUBSTANCE: method for production of high-impact polystyrene includes preparation of elastomer solution in styrene, thermal polymerization and suspension polymerization. In the course of polymerization relation K=x 0.000138, K is within 2.5-18.5, where η is prepolymer viscosity, cP; X is compression degree of prepolymer, mas. %; R is concentration mas.%; Cis concentration of indicator at prepolymerization stage, mas.%; Cis concentration of initiator at suspension stage, mas.%; C=0.07 when benzoyl peroxide is used, and I= 0.15 when lauryl peroxide or peroxide of fraction of fat acids is used. EFFECT: attained balance of mechanical and physical properties and increased fluidity of product melt without impairing sanitary characteristics. 1 tbl Использование: приборостроение. Сущность изобретения: готовят раствор эластомера в стироле, осуществляют термическую форполимеризацию и суспензионную, причем в процессе форполимеризации поддерживают отношение:, K= 2,5 - 18,5; η - вязкость форполимера, сП; X - степень конверсии форполимера, мас.%; R - концентрация регулятора молекулярной массы, мас. %; C- концентрация эластомера, мас.%; C - концентрация инициатора на стадии форполимеризации, мас.%; C - концентрация инициатора на суспензионной стадии, мас.%; I= 0,07 при использовании бензоилпероксида и 0,15 при использовании лаурилпероксида или перекиси фракции жирных кислот. 1 табл.