Propylene/ethylene random copolymer, molding material, and molded article

The present invention provides propylene/ethylene random copolymers characterized in that:an ethylene content (Ew) is 0.1-10 wt %,a relationship between an isolated ethylene content (E1) and the ethylene content (Ew) is represented by the following equation2,1- and 1,3-propylene units present in a p...

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Main Authors YASUDA YOSHITOYO, SHIRAISHI YASUHIRO, KUGIMIYA YOUICHI, FUJITA HIROYUKI, USHIODA TSUTOMU, SAITO JUN, HIROSE TAKETO, MORIMOTO YOSHITAKA, TSUTSUI MOTOTAKE, OOGI YOSHIYUKI, ADACHI MINORU
Format Patent
LanguageEnglish
Published 02.04.2002
Edition7
Subjects
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
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Summary:The present invention provides propylene/ethylene random copolymers characterized in that:an ethylene content (Ew) is 0.1-10 wt %,a relationship between an isolated ethylene content (E1) and the ethylene content (Ew) is represented by the following equation2,1- and 1,3-propylene units present in a polymer chain are 0-1 mol %,a weight average molecular weight (Mw) is in the range of 40,000-1,000,000, anda ratio (Mw/Mn) of the weight average molecular weight (Mw) to a number average molecular weight(Mn) is in the range of 1.5-3.8.The copolymers are suitable for a base resin for a molding material for the production of a wide variety of molded articles which are high in randomness and excellent in stiffness, heat resistance and transparency.
Bibliography:Application Number: US20000485618