JP2008063576A - ブチルゴムを含む過酸化物硬化熱可塑性加硫物 - Google Patents
ブチルゴムを含む過酸化物硬化熱可塑性加硫物 Download PDFInfo
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- JP2008063576A JP2008063576A JP2007228020A JP2007228020A JP2008063576A JP 2008063576 A JP2008063576 A JP 2008063576A JP 2007228020 A JP2007228020 A JP 2007228020A JP 2007228020 A JP2007228020 A JP 2007228020A JP 2008063576 A JP2008063576 A JP 2008063576A
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- thermoplastic vulcanizate
- peroxide
- thermoplastic
- elastomer
- thermoplastic resin
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Abstract
【解決手段】本発明は、熱可塑性樹脂と、ブチルゴムなどのイソモノオレフィン−マルチオレフィンエラストマーとを含む過酸化物硬化熱可塑性加硫物に関する。より具体的には、本発明は、過酸化物硬化を容易にするために、エラストマーが少なくとも3.5モル%のマルチオレフィンを含む過酸化物硬化熱可塑性加硫物に関する。本発明による熱可塑性加硫物は、コンデンサキャップ、医療用部品、および燃料電池部品などの、高純度用途向け成形品の製造に有用である。
【選択図】なし
Description
硬度および応力歪み特性は、ASTM(米国材料試験協会)D−2240の規定に従ってA−2型デュロメーターを使用して測定した。応力歪みデータをASTM D−412方法Aの規定に従って23℃で作成した。2mm厚さの引張用シート(15,000psiのプレス中、熱可塑性マトリックス材料の融点以上の温度で合計14分間成形されたもの)からカットしたダイCダンベルを使用した。1H NMRスペクトルは、ブルッカー(Bruker)DRX500(登録商標)分光器(500.13MHz 1H)を使用して、CDCl3中テトラメチルシラン基準の化学シフトで記録した。TPVは、ファレル(Farrel)標準150mm直径ミルおよびブラベンダー・インテリ−トルク・プラスチ−コーダー(Brabender Intelli−Torque Plasti−corder)(登録商標)を用いて製造した。
すべての試薬は、特に明記しない限り、シグマ−アルドリッチ(Sigma−Aldrich)(オンタリオ州オークビル(Oakville,Ontario))から入手したままの状態で使用した。IIR(RB301)(登録商標)はランクセス社(LANXESS Inc.)によって供給されたままの状態で使用し、EPDM(ブナ(Buna)EP G 5450)(登録商標)はランクセス社(LANXESS Corp.)によって供給されたままの状態で使用した。HVA #2(登録商標)(併用剤)はデュポン・カナダ社(DuPont Canada Inc.)によって供給されたままの状態で使用し、サンパー(Sunpar)2280(登録商標)(可塑剤)はR.E.キャロル社(R.E.Carroll Inc.)によって供給されたままの状態で使用し、イルガノックス(Irganox)1010(登録商標)(酸化防止剤)はチバ・スペシャルティ・ケミカルズ社(Ciba Specialty Chemicals Corp.)によって供給されたままの状態で使用し、カーボンブラック(Carbon Black)IRB#7(登録商標)(充填剤)はバレンタイン・エンタープライズ社(Balentine Enterprises Inc.)によって供給されたままの状態で使用し、トリガノックス(Triganox)145−45B−pd(登録商標)(過酸化物)はH.M.ロイアル(H.M.Royal)によって供給されたままの状態で使用した。
次の実施例は、最高で8.0モル%までのイソプレン含有率と、35〜40MUのムーニー(Mooney)粘度(125℃でML1+8)とを有する新規グレードのIIRの、連続プロセスによる製造を例示する。
下記の実施例は、ブチル/アイソタクチックポリプロピレン(iPP)TPVの物理的特性に対する過酸化物および併用剤使用量の影響を実証する。表2にリストされた原料を用いたTPV実施例2〜4を、180℃、150rpmで作動するブラベンダープラスチ−コーダー(Brabender Plasti−Corder)(登録商標)を使用して製造した。プラスチックを先ず加え、3分間溶融させた(段階1)。実施例1を次に加え、プラスチックと2分間混合させた(段階2)。過酸化物および併用剤を次に加え、ブチル成分を1分間動的に加硫させた(段階3)。酸化防止剤を次に加え、混合物を30秒後にあけた(段階4)。配合物を次にミルの中へ通して冷却し、シートオフ(sheet off)した。
次の実施例は、TPVの物理的特性に対する混合時間の影響を実証する。上述のような各段階の混合時間を、表3に示すように実施例4〜8について変動させた。
次の実施例は、TPVの物理的特性に対する型温度の影響を例示する。TPV実施例9〜12を表4にリストされた原料で製造した。これらの実施例は、先ず、実施例1、可塑剤、充填剤および併用剤のマスターバッチを作製することによって製造した。第2の工程は、ブラベンダープラスチ−コーダー(登録商標)中、180℃、150rpmでの混合工程であった。プラスチックを加え、4分間溶融させた。マスターバッチを次に加え、2分間プラスチックと混合させた。過酸化物を次に加え、IIRを1分間動的に加硫させた。酸化防止剤を次に加え、混合物を30秒後にあけた。配合物を次にミルの中へ通して冷却し、シートオフした。
以下に、標準グレードのIIR(RB301)(登録商標)の代わりに高IP IIR(実施例1)を用いることに関連した物理特性の利点を例示する。追加の比較例として、EPDMゴム(ブナ(Buna)EP G5450(登録商標)、実施例13)をベースにしたTPVを、実施例14〜15で採用したものと同じ混合手順を用いて製造した(表6を参照)。3つの実施例はいずれも、スチームプレス中、25,000psiで14分間成形し、次に、10,000psiのコールドプレス中に20分間置いた。
次の実施例は、高IP IIRをベースにしたTPVのリサイクル性を示す。実施例15(上記のような)を細長い小片にカットし、同じ条件下に再成形して実施例16を作製した(第1リサイクル)。次に、実施例16を細長い小片にカットし、再成形して実施例17を作製した(第2リサイクル)。実施例17を次に細長い小片にカットし、再成形して実施例18を作製した(第3リサイクル)。表7に、実施例15〜18の応力/歪み特性を列挙する。
Claims (20)
- a)熱可塑性樹脂、および
b)少なくとも1種のC4〜C7イソモノオレフィンモノマーに由来する繰り返し単位と、少なくとも1種のC4〜C7マルチオレフィンモノマーに由来する繰り返し単位少なくとも3.5モル%とを含む非ハロゲン化エラストマー、
を含む過酸化物硬化熱可塑性加硫物。 - 前記イソモノオレフィンがイソブテンを含み、そして前記マルチオレフィンがイソプレンを含む、請求項1に記載の熱可塑性加硫物。
- 前記熱可塑性樹脂がポリプロピレン、ポリエチレン、ポリスチレン、アクリロニトリル−ブタジエン−スチレン(ABS)、アリル樹脂、エチレンビニルアルコール、フッ素樹脂、ポリアセタール、ポリアクリレート、ポリアクリロニトリル、ポリアミド、ポリイミド、ポリカーボネート、ポリエステル、ポリエチレンオキシド、ポリプロピレンオキシド、ポリエチレングリコール、ポリプロピレングリコール、ポリ塩化ビニリデンまたはこれらの混合物を含む、請求項1に記載の熱可塑性加硫物。
- 前記非ハロゲン化エラストマーが、少なくとも1種のC4〜C7マルチオレフィンモノマーに由来する繰り返し単位を少なくとも5モル%含む、請求項1に記載の熱可塑性加硫物。
- 前記非ハロゲン化エラストマーが、少なくとも1種のC4〜C7マルチオレフィンモノマーに由来する繰り返し単位を少なくとも7.5モル%含む、請求項1に記載の熱可塑性加硫物。
- 前記非ハロゲン化エラストマーが熱可塑性加硫物の20〜80重量%の量で存在する、請求項1に記載の熱可塑性加硫物。
- 請求項1〜6のいずれか一項に記載の熱可塑性加硫物から製造された成形品。
- コンデンサキャップ、注射器部品または燃料電池部品を含む、請求項7に記載の成形品。
- 引張強さの損失が初期の55%未満であり、かつ、極限伸びの損失が初期の55%未満である状態で、少なくとも3回リサイクルできる、請求項7に記載の成形品。
- a)熱可塑性樹脂を供給する工程と、
b)少なくとも1種のC4〜C7イソモノオレフィンモノマーに由来する繰り返し単位と、少なくとも1種のC4〜C7マルチオレフィンモノマーに由来する繰り返し単位少なくとも3.5モル%とを含む非ハロゲン化エラストマーを供給する工程と、
c)熱活性化型過酸化物硬化システムを供給する工程と、
d)熱可塑性加硫物を形成させるために、前記熱可塑性樹脂および非ハロゲン化エラストマーを前記過酸化物硬化システムと一緒に、少なくとも100℃の温度で混合する工程と
によって製造された熱可塑性加硫物。 - 前記イソモノオレフィンがイソブテンを含み、そして前記マルチオレフィンがイソプレンを含む、請求項10に記載の熱可塑性加硫物。
- 前記熱可塑性樹脂がポリプロピレン、ポリエチレン、ポリスチレン、アクリロニトリル−ブタジエン−スチレン(ABS)、アリル樹脂、エチレンビニルアルコール、フッ素樹脂、ポリアセタール、ポリアクリレート、ポリアクリロニトリル、ポリアミド、ポリイミド、ポリカーボネート、ポリエステル、ポリエチレンオキシド、ポリプロピレンオキシド、ポリエチレングリコール、ポリプロピレングリコール、ポリ塩化ビニリデンまたはこれらの混合物を含む、請求項10に記載の熱可塑性加硫物。
- 前記非ハロゲン化エラストマーが、少なくとも1種のC4〜C7マルチオレフィンモノマーに由来する繰り返し単位を少なくとも5モル%含む、請求項10に記載の熱可塑性加硫物。
- 前記非ハロゲン化エラストマーが、少なくとも1種のC4〜C7マルチオレフィンモノマーに由来する繰り返し単位を少なくとも7.5モル%含む、請求項10に記載の熱可塑性加硫物。
- 前記非ハロゲン化エラストマーが、熱可塑性加硫物の20〜80重量%の量で存在する、請求項10に記載の熱可塑性加硫物。
- 前記過酸化物硬化システムが2,5−ジメチル−2,5−ジ−(t−ブチルペルオキシ)ヘキシン−3、ジ−t−ブチルペルオキシド、2,5−ジメチル−2,5−ジ(t−ブチルペルオキシ)ヘキサン、t−ブチルクミルペルオキシド、ジ−(2−t−ブチルペルオキシイソプロピル)ベンゼン、ジクミルペルオキシド、4,4−ジ−(t−ブチルペルオキシ)吉草酸ブチル、1,1−ジ−(t−ブチルペルオキシ)−3,3,5−トリメチルシクロヘキサン、ペルオキシ安息香酸t−ブチル、3,5,5−トリメチルペルオキシヘキサン酸t−ブチル、ジベンジルペルオキシド、ジ(4−メチルベンゾイル)ペルオキシド、ジ−2,4−ジクロロベンゾイルペルオキシドまたはこれらの混合物を含む、請求項10に記載の熱可塑性加硫物。
- 前記混合工程が、前記熱可塑性樹脂の溶融を引き起こす条件下にて押出機で行われる、請求項10〜16のいずれか一項に記載の熱可塑性加硫物。
- 前記混合工程が、前記エラストマーの溶融を引き起こす条件下にて押出機で行われ、かつ、前記エラストマーが熱可塑性樹脂中に分散される、請求項17に記載の熱可塑性加硫物。
- 前記過酸化物硬化システムが、押出機中の溶融した熱可塑性樹脂およびエラストマーに添加される、請求項17に記載の熱可塑性加硫物。
- 前記過酸化物硬化システムの添加後の、前記押出機中の溶融した熱可塑性樹脂およびエラストマーの温度が少なくとも130℃である、請求項19に記載の熱可塑性加硫物。
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Also Published As
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RU2007133563A (ru) | 2009-03-20 |
BRPI0704072A (pt) | 2008-04-22 |
JP5175073B2 (ja) | 2013-04-03 |
KR101353880B1 (ko) | 2014-01-20 |
ES2420123T3 (es) | 2013-08-22 |
CN101139445A (zh) | 2008-03-12 |
CA2598342C (en) | 2014-10-14 |
CN101139445B (zh) | 2012-11-07 |
EP1897912B1 (en) | 2013-01-02 |
SG141323A1 (en) | 2008-04-28 |
MX2007010929A (es) | 2008-10-28 |
TW200835741A (en) | 2008-09-01 |
KR20080023197A (ko) | 2008-03-12 |
EP1897912A1 (en) | 2008-03-12 |
US20080076879A1 (en) | 2008-03-27 |
RU2466159C2 (ru) | 2012-11-10 |
CA2598342A1 (en) | 2008-03-08 |
MY150676A (en) | 2014-02-28 |
SG174786A1 (en) | 2011-10-28 |
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