BRANCHED PROPYLENE-BASED POLYMER

Provided is a branched propylene-based polymer which retains a melt tension necessary for molding and has excellent spreadability during melting. The branched propylene-based polymer comprises propylene and 0-11 mol% ethylene and α-olefin having four or more carbon atoms and has the following proper...

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Main Authors ITO, Masaaki, NAKANO, Masato, TAKIZAWA, Miori
Format Patent
LanguageEnglish
French
Japanese
Published 28.09.2023
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Abstract Provided is a branched propylene-based polymer which retains a melt tension necessary for molding and has excellent spreadability during melting. The branched propylene-based polymer comprises propylene and 0-11 mol% ethylene and α-olefin having four or more carbon atoms and has the following properties (1) to (4). (1) An MFR of 0.1-100 g/10 min. (2) An Mz/Mw of 2.5-4.0. (3) A branching index g' (1,000,000) of 0.60-0.75. (4) The flow activation energy (Ea), kJ/mol, obtained through a dynamic viscoelasticity measurement and the MFR satisfy the following relationship (1). Relationship (1): Ea≥-12.5×log(MFR)+66 L'invention concerne un polymère ramifié à base de propylène qui conserve la tension de fusion nécessaire au moulage et présente néanmoins une excellente aptitude à l'étalement pendant la fusion. Le polymère ramifié à base de propylène comprend du propylène et de 0 à 11 % en moles d'éthylène et d'α-oléfine ayant quatre atomes de carbone ou plus et comprend les propriétés (1) à (4) suivantes. (1) Un MFR de 0,1 à 100 g/10 min. (2) Un Mz/Mw de 2,5 à 4,0. (3) Un indice de ramification g' (1 000 000) de 0,60 à 0,75. (4) L'énergie d'activation de flux (Ea), kJ/mol, obtenue par une mesure de viscoélasticité dynamique et le MFR satisfont la relation suivante (1). Relation (1) : Ea ≥ -12,5 × log(MFR) + 66 成形加工に必要な溶融張力を保持しながら、溶融時の延展性に優れる分岐状プロピレン系重合体を提供する。 プロピレンと、エチレン及び炭素数4以上のαオレフィン0~11mol%からなる分岐状プロピレン系重合体であって、下記特性(1)~(4)を有する、分岐状プロピレン系重合体。特性(1):MFRが0.1g/10分~100g/10分である;特性(2):Mz/Mwが2.5~4.0である;特性(3):分岐指数g'(100万)が0.60~0.75である;特性(4):動的粘弾性を測定して得られる流動活性化エネルギー(Ea)kJ/molとMFRとが下記の式(1)を満たす。[式(1):Ea≧-12.5×log(MFR)+66]
AbstractList Provided is a branched propylene-based polymer which retains a melt tension necessary for molding and has excellent spreadability during melting. The branched propylene-based polymer comprises propylene and 0-11 mol% ethylene and α-olefin having four or more carbon atoms and has the following properties (1) to (4). (1) An MFR of 0.1-100 g/10 min. (2) An Mz/Mw of 2.5-4.0. (3) A branching index g' (1,000,000) of 0.60-0.75. (4) The flow activation energy (Ea), kJ/mol, obtained through a dynamic viscoelasticity measurement and the MFR satisfy the following relationship (1). Relationship (1): Ea≥-12.5×log(MFR)+66 L'invention concerne un polymère ramifié à base de propylène qui conserve la tension de fusion nécessaire au moulage et présente néanmoins une excellente aptitude à l'étalement pendant la fusion. Le polymère ramifié à base de propylène comprend du propylène et de 0 à 11 % en moles d'éthylène et d'α-oléfine ayant quatre atomes de carbone ou plus et comprend les propriétés (1) à (4) suivantes. (1) Un MFR de 0,1 à 100 g/10 min. (2) Un Mz/Mw de 2,5 à 4,0. (3) Un indice de ramification g' (1 000 000) de 0,60 à 0,75. (4) L'énergie d'activation de flux (Ea), kJ/mol, obtenue par une mesure de viscoélasticité dynamique et le MFR satisfont la relation suivante (1). Relation (1) : Ea ≥ -12,5 × log(MFR) + 66 成形加工に必要な溶融張力を保持しながら、溶融時の延展性に優れる分岐状プロピレン系重合体を提供する。 プロピレンと、エチレン及び炭素数4以上のαオレフィン0~11mol%からなる分岐状プロピレン系重合体であって、下記特性(1)~(4)を有する、分岐状プロピレン系重合体。特性(1):MFRが0.1g/10分~100g/10分である;特性(2):Mz/Mwが2.5~4.0である;特性(3):分岐指数g'(100万)が0.60~0.75である;特性(4):動的粘弾性を測定して得られる流動活性化エネルギー(Ea)kJ/molとMFRとが下記の式(1)を満たす。[式(1):Ea≧-12.5×log(MFR)+66]
Author ITO, Masaaki
TAKIZAWA, Miori
NAKANO, Masato
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DocumentTitleAlternate 分岐状プロピレン系重合体
POLYMÈRE RAMIFIÉ À BASE DE PROPYLÈNE
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Snippet Provided is a branched propylene-based polymer which retains a melt tension necessary for molding and has excellent spreadability during melting. The branched...
SourceID epo
SourceType Open Access Repository
SubjectTerms 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
Title BRANCHED PROPYLENE-BASED POLYMER
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