PROPYLENE-BASED RESIN COMPOSITION FOR DRINK CONTAINER COVER

PURPOSE:To obtain a composition to be made into a drink container cover having excellent rigidity and impact strength, not causing a liquid/gas leakage during thermal sterilization, comprising a specific propylene-ethylene block copolymer, a phosphorus compound, a nonionic surfactant and a titanium...

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Bibliographic Details
Main Authors KAWAI SHIGENOBU, SAKURAI HIDEO, OSEGAKI KIMIHO, YADA NORIYUKI
Format Patent
LanguageEnglish
Published 12.09.1995
Edition6
Subjects
ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR
CHEMISTRY
COFFEE MILLS
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS,e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES,DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS
CONVEYING
DOMESTIC ARTICLES OR APPLIANCES
FURNITURE
HANDLING THIN OR FILAMENTARY MATERIAL
HOUSEHOLD OR TABLE EQUIPMENT
HUMAN NECESSITIES
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PACKAGES
PACKAGING ELEMENTS
PACKING
PERFORMING OPERATIONS
SPICE MILLS
STORING
SUCTION CLEANERS IN GENERAL
THEIR PREPARATION OR CHEMICAL WORKING-UP
TRANSPORTING
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:PURPOSE:To obtain a composition to be made into a drink container cover having excellent rigidity and impact strength, not causing a liquid/gas leakage during thermal sterilization, comprising a specific propylene-ethylene block copolymer, a phosphorus compound, a nonionic surfactant and a titanium oxide pigment. CONSTITUTION:This composition is obtained by blending (A) 100 pts.wt. of a propylene.ethylene block copolymer which comprises 88-95wt.% of a crystalline polypropylene part having 5-100g/10 minutes MFR and >=0.9070g/cm density and 5-12wt.% of ethylene.propylene random copolymerization part having 30-60wt.% ethylene content and 0.001-1g/10 minutes MFR and is polymerized by using a support type solid catalyst containing Mg, Ti, halogen and an electron donor at two or more stages with (B) a phosphorus-based compound of the formula (R is a direct bond, S or a 1-4C alkylidene; R and R each is H or a 1-8C alkyl; M is a monovalent to trivalent metal; (n) is 1-3), (C) 0.1-5 pts.wt. of a nonionic surfactant and (D) 0.1-7 pts.wt. of a titanium oxide-based pigment.
Bibliography:Application Number: JP19940032536