METHOD OF INCREASING STRENGTH OF MELT OF POLYPROPYLENE (CO)POLYMERS

METHOD OF INCREASING STRENGTH OF MELT OF POLYPROPYLENE (CO)POLYMERS

chemical industry. SUBSTANCE: described is method of increasing strength of melt of polypropylene copolymer using initiator dispersions. Use of initiator dispersions in the form of particles instead of corresponding nondispersed initiators of dilutions or solution produces considerable increase in s...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KHOGT ANDREAS KHERMAN, VESTMEJZE KHANS, O BUN KHO
Format: Patent
Sprache:eng
Schlagworte:
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
GENERAL PROCESSES OF COMPOUNDING
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
WORKING-UP
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Beschreibung
Zusammenfassung:chemical industry. SUBSTANCE: described is method of increasing strength of melt of polypropylene copolymer using initiator dispersions. Use of initiator dispersions in the form of particles instead of corresponding nondispersed initiators of dilutions or solution produces considerable increase in strength of melt of modified polymer and wide range of suitable initiators. Method uses initiators in the form of dispersion in polar medium in which at least 90 wt % by weight of initiator particles have particle size of less than 50 mcm and at least 99% by weight of initiator particles have particle size of less than 65 mcm. EFFECT: strength method. 22 cl, 10 tbl