JP2003138073A5 - - Google Patents

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JP2003138073A5
JP2003138073A5 JP2001332323A JP2001332323A JP2003138073A5 JP 2003138073 A5 JP2003138073 A5 JP 2003138073A5 JP 2001332323 A JP2001332323 A JP 2001332323A JP 2001332323 A JP2001332323 A JP 2001332323A JP 2003138073 A5 JP2003138073 A5 JP 2003138073A5
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JP
Japan
Prior art keywords
resin
block copolymer
hydrogenated block
hydrogenation
styrene
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Pending
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JP2001332323A
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Japanese (ja)
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JP2003138073A (en
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Priority to JP2001332323A priority Critical patent/JP2003138073A/en
Priority claimed from JP2001332323A external-priority patent/JP2003138073A/en
Publication of JP2003138073A publication Critical patent/JP2003138073A/en
Publication of JP2003138073A5 publication Critical patent/JP2003138073A5/ja
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Description

【0002】
【従来の技術】
オレフィン系樹脂は機械的強度が強く、成形性、耐薬品性にも優れるため多くの工業分野で使用される凡用樹脂であるが、高結晶性であり二軸延伸が困難なため、剛性の低い合成樹脂に剛性の高い合成樹脂を混合して元の樹脂より剛性を高め、かつ高結晶性の合成樹脂に非結晶性の合成樹脂を混合して軸延伸を容易にすること、例えば、オレフィン系樹脂にポリスチレン系樹脂などを配合することが試みられている。ここに、ポリスチレン系樹脂は、機械的特性は劣るものの、電気絶縁性に優れ、特に溶融時の熱安定性、流動性が良い利点があり、オレフィン系樹脂の改質に多用される樹脂である。
[0002]
[Prior Art]
Olefin resin is a general resin used in many industrial fields because of its high mechanical strength and excellent moldability and chemical resistance, but it is highly crystalline and difficult to be biaxially stretched, so it is rigid. low synthetic resin mixed with high rigidity synthetic resin increase the rigidity than the original resin, and the easily child mixing to biaxially stretching the amorphous synthetic resin with high crystallinity of the synthetic resin, for example, It has been attempted to blend a polystyrene resin or the like with an olefin resin. Here, polystyrene resins, although inferior in mechanical properties, have excellent electrical insulation properties, and in particular have the advantage of good heat stability during melting and good fluidity, and are resins widely used to modify olefin resins. .

重合体ブロック(B)が、イソプレンとブタジエンとの共重合体である場合には、イソプレンとブタジエンの結合形態は、ランダム、テーパード、ブロックのいずれでもよい。 Polymer block (B), when a copolymer of isoprene and butadiene, bound form of isoprene and butadiene random shape, tapered shape may be any blocky.

ここで使用できる水添触媒としては、ラネーニッケル、またはPt、Pd、Ru、Rh、Ni等の金属をカーボン、アルミナ、硅藻土等の担体に担持させた不均一触媒や、ニッケル、コバルトなどの第8〜10族の金属からなる有機金属化合物とトリエチルアルミニウム、トリイソブチルアルミニウムなどの有機アルミニウム化合物または有機リチウム化合物等の組み合わせからなるチーグラー系触媒、更には、チタン、ジルコニウム、ハフニウムなどの遷移金属のビス(シクロペンタジエニル)化合物とリチウム、ナトリウム、カリウム、アルミニウム、亜鉛またはマグネシウムなどの有機金属化合物の組み合わせからなるメタロセン系触媒などを用いることができる。水素添加は、通常、水素圧が常圧〜30MPa、反応温度が常温〜250℃の範囲内で行われる。水素添加に要する反応時間は、通常0.1〜100時間である。 As a hydrogenation catalyst which can be used here, heterogeneous catalysts prepared by supporting Raney nickel or metal such as Pt, Pd, Ru, Rh, Ni on a carrier such as carbon, alumina, diatomaceous earth, nickel, cobalt, etc. 8-10 organometallic compound comprising a metal and triethylaluminum, an organoaluminum compound or a Ziegler catalysts consisting of a combination of an organic lithium compound such as triisobutylaluminum, furthermore, titanium, zirconium, a transition metal such as hafnium Metallocene catalysts comprising a combination of a bis (cyclopentadienyl) compound of the following and an organometallic compound such as lithium, sodium, potassium, aluminum, zinc or magnesium can be used. The hydrogenation is usually carried out at a hydrogen pressure of normal pressure to 30 MPa and a reaction temperature of normal temperature to 250 ° C. The reaction time required for the hydrogenation is usually 0.1 to 100 hours.

本発明は、このような水添ブロック共重合体(ハ)を、ポリプロピレン系樹脂(イ)5〜95質量%とポリスチレン系樹脂(ロ)5〜95質量%とからなる組成物100質量部に対して、1〜30質量部配合したものである。該水添ブロック共重合体(ハ)の配合量が1質量部を下回ると、ポリプロピレン系樹脂(イ)とポリスチレン系樹脂(ロ)との相溶性が不十分となる場合があり、その一方、30質量を越えても相溶性の改良自体には変化が少ないからである。 This onset Ming, such hydrogenated block copolymer (c), polypropylene resin (b) 5 to 95 wt% and a polystyrene-based resin (ii) consisting of 5 to 95% by weight to 100 parts by mass of the composition Is blended with 1 to 30 parts by mass. When the amount of the hydrogenated block copolymer (C) is less than 1 part by mass, the compatibility between the polypropylene resin (B) and the polystyrene resin (B) may be insufficient. Even if it exceeds 30 parts by mass, there is little change in the improvement in compatibility itself.

(5)分散粒径
下記の実施例及び比較例で調製した熱可塑性樹脂組成物において、ペレタイズする前のストランド及びペレット化後に射出成形して作製した曲げ弾性率測定用試験片を、それぞれ液体窒素中で破断し、それぞれについて得られた試料をトルエンに5分間浸漬してポリスチレンおよび水添ブロック共重合体を抽出した後に、それぞれの試料の破断面を走査型電子顕微鏡(SEM)で観察した。残存するポリプロピレン部分に抽出によって生じたの直径を測定し、それぞれの試料について平均値を求めてペレットの分散粒径、成形後の分散粒径とした。
(5) Dispersion Particle Size In the thermoplastic resin compositions prepared in the following Examples and Comparative Examples, the strands before pelletization and the test pieces for flexural modulus measurement prepared by injection molding after pelletization are each liquid nitrogen The samples obtained for each were immersed in toluene for 5 minutes to extract polystyrene and a hydrogenated block copolymer, and then the fractured surface of each sample was observed with a scanning electron microscope (SEM). The diameter of the hole which arose by extraction in the remaining polypropylene part was measured, the average value was calculated | required about each sample, and it was set as the dispersion particle size of the pellet, and the dispersion particle size after shaping | molding.

○:表面の平滑性が良好である
×:厚みむらによる模様がある
××:厚みむらが著しく、模様あり
(参考例1:水添ブロック共重合体(1)の製造)
乾燥した窒素で置換された耐圧容器中に溶媒としてシクロヘキサン2700gを投入し、重合開始剤としてsec−ブチルリチウム0.27gを添加して40℃でスチレン75gを重合した。その後、ルイス塩基としてテトラヒドロフラン14gを加え、次いでイソプレン150g、さらにスチレン75gを順次添加し、重合させてスチレン−イソプレン−スチレン型のトリブロック共重合体を得た。得られたトリブロック共重合体300gを、シクロヘキサン2700g中でPd/Cを触媒として2MPaの水素雰囲気下で水素添加処理を行い、水添ブロック共重合体を得た。この水添ブロック共重合体を水添ブロック共重合体(1)とする。得られた水添ブロク共重合体(1)のスチレン含有量、数平均分子量、ビニル結合含有量および水素添加率を表1に示す。
:: The surface smoothness is good ×: There is a pattern due to uneven thickness ××: The uneven thickness is remarkable and there is a pattern (Reference Example 1: Production of hydrogenated block copolymer (1))
In a dry nitrogen-substituted pressure-resistant container, 2700 g of cyclohexane was charged as a solvent, 0.27 g of sec-butyllithium was added as a polymerization initiator, and 75 g of styrene was polymerized at 40 ° C. Thereafter, 14 g of tetrahydrofuran as a Lewis base was added, then 150 g of isoprene and further 75 g of styrene were sequentially added and polymerized to obtain a styrene-isoprene-styrene type triblock copolymer. A hydrogenation block copolymer was obtained by hydrogenating 300 g of the obtained triblock copolymer in 2700 g of cyclohexane under a hydrogen atmosphere of 2 MPa using Pd / C as a catalyst. This hydrogenated block copolymer is referred to as a hydrogenated block copolymer (1). The resulting hydrogenated block copolymer styrene content of (1) shows the number average molecular weight, a vinyl bond content and hydrogenation ratio in Table 1.

JP2001332323A 2001-10-30 2001-10-30 Thermoplastic resin composition Pending JP2003138073A (en)

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JP2001332323A JP2003138073A (en) 2001-10-30 2001-10-30 Thermoplastic resin composition

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JP2003138073A JP2003138073A (en) 2003-05-14
JP2003138073A5 true JP2003138073A5 (en) 2005-04-07

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008018445A1 (en) * 2006-08-08 2008-02-14 Asahi Kasei Chemicals Corporation Hydrogenated block copolymers and crosslinking compositions conatining the same
EP3431545A4 (en) * 2016-03-16 2020-01-08 Kuraray Co., Ltd. Resin composition, heat sealing agent, film for liquid packaging container, liquid packaging container, liquid discharge member, and medical container

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