JP2009299045A5

JP2009299045A5 -

Info

Publication number: JP2009299045A5
Application number: JP2009115464A
Authority: JP
Filing date: 2009-05-12
Publication date: 2010-02-12
Anticipated expiration: 2029-05-12

Description

本発明者等は、上記課題を解決するため、鋭意検討した結果、特定の数平均分子量（Ｍｎ）、Ｑ値、末端ビニル率、末端ビニリデン率、昇温溶出分別における４０℃以下の温度で溶出する成分量、^１３Ｃ−ＮＭＲ分析によって得られるプロピレン単位３連鎖のｍｍ分率を有する、ポリプロピレン単独重合体が上記の課題を解決できることを見出し、本発明に到達した。 As a result of intensive studies to solve the above-mentioned problems, the present inventors have eluted at a specific number average molecular weight (Mn), Q value, terminal vinyl ratio, terminal vinylidene ratio, and a temperature of 40 ° C. or less in temperature rising elution fractionation The present inventors have found that a polypropylene homopolymer having an amount of components to be obtained and a mm fraction of three chains of propylene units obtained by ¹³ C-NMR analysis can solve the above-mentioned problems.

すなわち、本発明の第１の発明によれば、下記（１）〜（５）の特性を有することを特徴とするプロピレン系重合体が提供される。
特性（１）：ＧＰＣによって得られる数平均分子量（Ｍｎ）が５万より大きく１３万未満。
特性（２）：ＧＰＣによって得られる重量平均分子量（Ｍｗ）と数平均分子量（Ｍｎ）との比（Ｑ値）が２．０以上４．０以下。
特性（３）：全ポリマー鎖のうち末端にビニル基を持つ鎖の割合（末端ビニル率）と、末端にビニリデン基を持つ鎖の割合（末端ビニリデン率）が、それぞれ下式を満たす。
（末端ビニル率）＝Ｍｎ／２１０００×［Ｖｉ］≧０．７
（末端ビニリデン率）＝Ｍｎ／２１０００×［Ｖｄ］＜０．１
（ただし、Ｍｎは、ＧＰＣによりもとめた数平均分子量、［Ｖｉ］は、^１３Ｃ−ＮＭＲより算出する１０００Ｃ当りの末端ビニル基の数、［Ｖｄ］は、^１３Ｃ−ＮＭＲより算出する１０００Ｃ当りの末端ビニリデン基の数である。）
特性（４）：オルトジクロロベンゼンを溶媒として使用した昇温溶出分別（ＴＲＥＦ）の測定において、４０℃以下の温度で溶出する成分が３重量％以下。
特性（５）：^１３Ｃ−ＮＭＲ分析によって得られるプロピレン単位３連鎖のｍｍ分率が９５％以上。 That is, according to the first invention of the present invention, there is provided a propylene-based polymer having the following characteristics (1) to (5).
Characteristic (1): The number average molecular weight (Mn) obtained by GPC is more than 50,000 and less than 130,000.
Characteristic (2): The ratio (Q value) between the weight average molecular weight (Mw) and the number average molecular weight (Mn) obtained by GPC is 2.0 or more and 4.0 or less.
Characteristic (3): The ratio of the chain having a vinyl group at the terminal (terminal vinyl ratio) and the ratio of the chain having a vinylidene group at the terminal (terminal vinylidene ratio) among all polymer chains satisfy the following formulas.
(Terminal vinyl ratio) = Mn / 21000 × [Vi] ≧ 0.7
(Vinyl terminal ratio) = Mn / 21000 × [Vd] <0.1
(However, Mn is the number average molecular weight determined by GPC, [Vi] is the number of terminal vinyl groups per 1000 C calculated from ¹³ C-NMR, and [Vd] is the number per 1000 C calculated from ¹³ C-NMR. (The number of terminal vinylidene groups.)
Characteristic (4): In the temperature rising elution fractionation (TREF) measurement using orthodichlorobenzene as a solvent, the component eluted at a temperature of 40 ° C. or less is 3% by weight or less.
Characteristic (5): mm fraction of propylene unit 3 chain obtained by ¹³ C-NMR analysis is 95% or more.

Claims

A propylene-based polymer having the following properties (1) to (5):
Characteristic (1): The number average molecular weight (Mn) obtained by GPC is more than 50,000 and less than 130,000.
Characteristic (2): The ratio (Q value) between the weight average molecular weight (Mw) and the number average molecular weight (Mn) obtained by GPC is 2.0 or more and 4.0 or less.
Characteristic (3): The ratio of the chain having a vinyl group at the terminal (terminal vinyl ratio) and the ratio of the chain having a vinylidene group at the terminal (terminal vinylidene ratio) among all polymer chains satisfy the following formulas.
(Terminal vinyl ratio) = Mn / 21000 × [Vi] ≧ 0.7
(Vinyl terminal ratio) = Mn / 21000 × [Vd] <0.1
(However, Mn is the number average molecular weight determined by GPC, [Vi] is the number of terminal vinyl groups per 1000 C calculated from ¹³ C-NMR, and [Vd] is the number per 1000 C calculated from ¹³ C-NMR. (The number of terminal vinylidene groups.)
Characteristic (4): In the temperature rising elution fractionation (TREF) measurement using orthodichlorobenzene as a solvent, the component eluted at a temperature of 40 ° C. or less is 3% by weight or less.
Characteristic (5): mm fraction of propylene unit 3 chain obtained by ¹³ C-NMR analysis is 95% or more.