JP6161184B2 - 血清または血漿分離用組成物、血液検査用容器、並びに血清または血漿分離用組成物の安定化方法 - Google Patents
血清または血漿分離用組成物、血液検査用容器、並びに血清または血漿分離用組成物の安定化方法 Download PDFInfo
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Description
本発明に係る血清または血漿分離用組成物のある特定の局面では、前記液状有機化合物が、液状樹脂を含むことを特徴とする。
本発明に係る血清または血漿分離用組成物の安定化方法は、液状有機化合物とチクソトロピー性付与成分とを含む血清または血漿分離用組成物に、熱可塑性エラストマーをさらに含ませることを特徴とする。
本発明に係る血清または血漿分離用組成物は、液状有機化合物と、チクソトロピー性付与成分と、熱可塑性エラストマーとを含む。そのため、本発明の血清または血漿分離用組成物では、液状有機化合物とチクソトロピー性付与成分とが分離し難く、均一な配合状態を長期間に渡って維持することができる。
本発明の血清又は血漿分離用組成物は、液状有機化合物を含有する。
本発明の血清又は血漿分離用組成物は、チクソトロピー性付与成分を含有する。
本発明の血清または血漿分離用組成物は、熱可塑性エラストマーを含有する。
本発明により提供される血清または血漿分離用組成物の製造方法は特に限定されない。例えば、上記液状有機化合物と上記熱可塑性エラストマーとを加熱溶解させた後、チクソトロピー性付与成分としての無機粉末を配合し、混合すればよい。混合方法は、特に限定されることはなく、プラネタリーミキサー、ロールミル、ホモジナイザー等の公知の混練方法を用いればよい。
本発明の血液検査用容器は、血清または血漿分離用組成物を内部に収容してなる。この血液検査用容器の形状は、特に制限されることはなく、公知の、一端に開口部を有する有底管状容器を用いればよい。
実施例及び比較例において用いた物質は以下の通りである。
ベンゼンポリカルボン酸アルキルエステル誘導体としてトリメリット酸エステル(DIC社製、商品名:モノサイザーW700)とスチレン系熱可塑性エラストマー(旭化成ケミカルズ社製、商品名:タフテックP1500)とを160℃で加熱溶解し、次いで、石油樹脂(イーストマンケミカル社製、商品名:リガライトS5090)、ジシクロペンタジエン樹脂(コロン社製、商品名:スコレッツSU500,SU90)を加えて、約160℃で加熱溶解して液状有機化合物を調製し、有機ゲル化剤としてのジベンジリデンソルビトール(新日本理化社製、商品名:ゲルオールD)の1−メチル−2−ピロリドン(NMP,和光純薬工業社製)溶液を加えて、35℃まで冷却した。次に、プラネタリ―ミキサーで上記液状有機化合物を撹拌しつつ、無機微粉末として、親水性微粉末シリカ(日本アエロジル社製、商品名:アエロジル200CF)及び疎水性微粉末シリカ(日本アエロジル社製、商品名:アエロジルR974)を、上記液状有機化合物中に分散させ、続いて精製水を添加した。このようにして、実施例1の血清または血漿分離用組成物を得た。なお、各成分の配合割合は、下記の表4に示すとおりである。
各成分の配合割合を表4に示したように変更したことを除いては、実施例1と同様にして、血清または血漿分離用組成物を得た。
10mL容量のポリエチレンテレフタレート製試験管(直径16mm×長さ100mm)20本に、上記血清または血漿分離用組成物を約1.2gずつ収容し、実施例1〜8及び比較例1について、それぞれ20本の血液検査用容器を作製した。
1)<比重及び粘度の評価>
各血清または血漿分離用組成物の25℃における比重を浮沈法により測定した。
上記で作製した20本の10mL容量の血液検査用容器をそれぞれ2グループに分け、ひとつのグループは、斜め下向きの状態で約55℃で1日静置し、残りのグループは、斜め下向きの状態で約55℃で5日間静置した。これらの加熱静置品について、血清または血漿分離用組成物の最初の液面位置から液状成分の滲み出しの有無を観察し、滲み出しのあったものについては滲み出しの長さを測定し、平均値を求めて相分離耐性を評価した。
実施例1〜8及び比較例1の評価結果を表5にまとめた。
実施例1〜8で用いられたものとは異なる種類の熱可塑性エラストマーにおいても、発明の効果を確認すべく実施例9〜21を検討した。
実施例9〜21において使用した熱可塑性エラストマーを表6に示す。また、血清または血漿分離用組成物の各成分の配合割合を表7に示す。
異なる種類の熱可塑性エラストマーを用いたこと、各成分の配合割合を表7に示したように変更したことを除いては、実施例1と同様にして、血清または血漿分離用組成物を得た。
異なる種類の熱可塑性エラストマーを用いたこと、補助溶媒の1−メチル−2−ピロリドン(NMP)を用いなかったこと、各成分の配合割合を表7に示したように変更したことを除いては、実施例1と同様にして、血清または血漿分離用組成物を得た。
実施例9〜21及び比較例2について、実施例1と同様の方法で、それぞれ20本の血液検査用容器を作製した。
1)<比重及び粘度の評価>
実施例9〜21及び比較例2について、実施例1と同様に行った。
2)<相分離耐性の評価>
実施例9〜21及び比較例2の評価結果を表8にまとめた。
Claims (11)
- 液状有機化合物と、チクソトロピー性付与成分と、熱可塑性エラストマーとを含む、血清または血漿分離用組成物。
- 前記液状有機化合物が、液状樹脂を含むことを特徴とする、請求項1に記載の血清または血漿分離用組成物。
- 前記熱可塑性エラストマーが、スチレン系熱可塑性エラストマー、ウレタン系熱可塑性エラストマー、エステル系熱可塑性エラストマー、アミド系熱可塑性エラストマー、アクリル系熱可塑性エラストマー及びオレフィン系熱可塑性エラストマーからなる群から選択される少なくとも1種であることを特徴とする、請求項1又は2に記載の血清または血漿分離用組成物。
- 前記熱可塑性エラストマーが、スチレン系熱可塑性エラストマーであることを特徴とする、請求項1〜3のいずれか1項に記載の血清または血漿分離用組成物。
- 前記熱可塑性エラストマーの含有量が、0.5〜50重量%である、請求項1〜4のいずれか1項に記載の血清または血漿分離用組成物。
- 前記液状樹脂成分が、石油樹脂及びジシクロペンタジエン樹脂のうち少なくとも一方と、ベンゼンポリカルボン酸アルキルエステルとの混合物であることを特徴とする、請求項2〜5のいずれか一項に記載の血清または血漿分離用組成物。
- 前記チクソトロピー性付与成分として、無機微粉末を含有することを特徴とする、請求項1〜6のいずれか一項に記載の血清または血漿分離用組成物。
- 前記無機微粉末が、親水性シリカ及び疎水性シリカのうち少なくとも一方であることを特徴とする、請求項7に記載の血清または血漿分離用組成物。
- 前記血清または血漿分離用組成物が、さらに有機ゲル化剤を含有することを特徴とする、請求項1〜8のいずれか一項に記載の血清または血漿分離用組成物。
- 請求項1〜9のいずれか一項に記載の血清または血漿分離用組成物を内部に収容してなることを特徴とする、血液検査用容器。
- 液状有機化合物とチクソトロピー性付与成分とを含む血清または血漿分離用組成物に、熱可塑性エラストマーをさらに含ませることを特徴とする、血清または血漿分離用組成物の安定化方法。
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