JPWO2009087971A1 - 組成物及びその成形体 - Google Patents
組成物及びその成形体 Download PDFInfo
- Publication number
- JPWO2009087971A1 JPWO2009087971A1 JP2009548903A JP2009548903A JPWO2009087971A1 JP WO2009087971 A1 JPWO2009087971 A1 JP WO2009087971A1 JP 2009548903 A JP2009548903 A JP 2009548903A JP 2009548903 A JP2009548903 A JP 2009548903A JP WO2009087971 A1 JPWO2009087971 A1 JP WO2009087971A1
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- Prior art keywords
- composition
- weight
- parts
- styrene
- polyolefin
- Prior art date
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- Granted
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- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 1
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- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
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- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
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- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/08—Copolymers of styrene
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
- C08L53/025—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes modified
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Abstract
Description
本発明におけるP3HAとしては、上記3−ヒドロキシアルカノエートのホモポリマー、または2種以上の組み合わせからなる共重合体、つまりジ−コポリマー、トリ−コポリマー、テトラ−コポリマーなど、またはこれらホモポリマー、コポリマー等から選ばれる2種以上のブレンド物が挙げられ、中でもn=1の3−ヒドロキシブチレート、n=2の3−ヒドロキシバリレート、n=3の3−ヒドロキシヘキサノエート、n=5の3−ヒドロキシオクタノエート、n=15の3−ヒドロキシオクタデカノエートなどのホモポリマー、またはこれら3−ヒドロキシアルカノエート単位2種以上の組合わせからなる共重合体、つまりジ−コポリマー、トリ−コポリマー、またはこれらのブレンド物が、好ましく使用できる。また、n=1の3−ヒドロキシブチレート(3HBともいう)とn=3の3−ヒドロキシヘキサノエート(3HHともいう)の共重合体であるポリ(3−ヒドロキシブチレート−コ−3−ヒドロキシヘキサノエート)(3PHBHともいう)がより好ましく、その組成比が3−ヒドロキシブチレート/3−ヒドロキシヘキサノエート=99/1〜80/20(mol/mol)であれば更に好ましい。
b−PP(AZ864):住友化学製ブロックPP(エチレンプロピレンを含むイソタクチックポリプロピレンブロック共重合体) 商品名;ノーブレンAZ864(190℃、2.16kg荷重のMI(メルトインデックス)が約13g/min)
b−PP(J715M):プライムポリマー製ブロックPP(エチレンプロピレンを含むイソタクチックポリプロピレンブロック共重合体) 商品名;プライムポリプロJ715M(190℃、2.16kg荷重のMI(メルトインデックス)が約4g/min)
PHBH :ポリ(3−ヒドロキシブチレート−コ−3−ヒドロキシヘキサノエート)、HH率 :PHBH中の3−ヒドロキシヘキサノエートのモル分率=12mol%
PLA :ポリ乳酸、三井化学製、商品名;レイシア−H−100
SEPS(2002):クラレ製スチレン−エチレンプロピレン−スチレンブロックコポリマー 商品名;セプトン2002(スチレン含有量:30重量%、MFR(200℃、荷重10kg):100g/10min)
BF:住友化学製、商品名;BF−7M、ポリエチレン−グリシジルメタクレート(6%)−アクリル酸メチル(30)
酸化防止剤:ヒンダードフェノール系酸化防止剤(チバガイギー社製、商品名;IR−1010)
<ノッチ付アイゾッド衝撃値(耐衝撃性)の測定>
JIS K7110に準拠して、アイゾッド衝撃試験器(株式会社東洋精機製作所製)を使用して、ノッチ付アイゾッド衝撃値を測定した。
JIS K7113に準拠して、オートグラフ(株式会社島津製作所製)を使用して引張降伏伸びを測定した。
JIS K7203に準拠して、オートグラフ(株式会社島津製作所製)を使用して曲げ弾性率を測定した。
東芝75t射出成形機(IS75E)を用いて、射出成形温度190℃、金型温度60℃、射出速度40%で、ダンベル(2.5mm厚み)を成形した時の成形品表面の剥離の有無を目視評価した。
○:剥離無し、×:剥離あり
(実施例1〜5及び比較例1〜7)
PHBHは、微生物として、Alcaligenes eutrophusにAeromonas caviae由来のPHA合成酵素遺伝子を導入したAlcaligenes eutrophus AC32(J.Bacteriol.,179,4821(1997))を用いて原料、培養条件を適宜調整して生産されたPHBH(HH率約12mol%)を使用した。その他の使用原料は、表1に示した原料と部数を配合して使用した。
Claims (7)
- ポリオレフィン100重量部、脂肪族ポリエステル系生分解性ポリマー1〜100重量部、及びスチレン系エラストマー0.1〜100重量部を含有する組成物。
- ポリオレフィン100重量部に対する脂肪族ポリエステル系生分解性ポリマーの配合量が1〜50重量部であり、スチレン系エラストマーの配合量が0.1〜50重量部である請求項1記載の組成物。
- 脂肪族ポリエステル系生分解性ポリマーが、微生物から生産される式(1):[−CHR−CH2−CO−O−](ここに、RはCnH2n+1で表されるアルキル基で、n=1〜15の整数である。)で示される繰り返し単位からなる脂肪族ポリエステル重合体(以下、ポリ(3−ヒドロキシアルカノエート):略称P3HA)である請求項1又は2記載の組成物。
- P3HAが、n=1及び3からなるポリ(3−ヒドロキシブチレート−コ−3−ヒドロキシヘキサノエート)である請求項3記載の組成物。
- ポリ(3−ヒドロキシブチレート−コ−3−ヒドロキシヘキサノエート)の共重合成分の組成比が、ポリ(3−ヒドロキシブチレート)/ポリ(3−ヒドロキシヘキサノエート)=99/1〜80/20(mol/mol)である請求項4記載の組成物。
- スチレン系エラストマーが、スチレン−エチレンプロピレン−スチレンブロックコポリマーである請求項1〜5のいずれか1項に記載の組成物。
- 請求項1〜6のいずれか1項に記載の組成物からなる成形体。
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