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    • 1. 发明授权
    • Gamma-ray stabilizer and thermoplastic polymer compound including the said stabilizer
    • γ射线稳定剂和包括所述稳定剂的热塑性聚合物化合物
    • US06485657B1
    • 2002-11-26
    • US09485509
    • 2000-02-11
    • Wataru FunakoshiTetsuo KandaFumitaka KondoKatsushi Sasaki
    • Wataru FunakoshiTetsuo KandaFumitaka KondoKatsushi Sasaki
    • G21C512
    • C08K5/04A61M1/16B01D61/30B01D65/00B01D65/022B01D2321/346C08K5/005C08K5/527C08L69/00
    • A new gamma-ray stabilizer comprising a combination of 100 parts by weight of a benzyl compound (A) having a specific chemical structure and 0.01 to 10 parts by weight of a pentaerythritol phosphorous ester (B) having a spirocyclic structure. Said stabilizer is preferably blended in such a manner that said (A) is contained in an amount of 0.01 to 10 parts by weight based on 100 parts by weight of a thermoplastic polymer (polycarbonate or the like), and said (B) is contained in an amount of 0.01 to 1 part by weight based on 100 parts by weight of said (A). When the thermoplastic polymer is subjected to gamma-ray irradiation, said stabilizer can efficiently protect the thermoplastic polymer from the deterioration of physical properties and yellowing; and on molding processing, the stabilizer-added polymer is suffered from little color tone deterioration and has excellent color tone, and at the same time, the polymer is scarcely suffered from molecular weight decrease on molding, and exhibits excellent thermal stability, moldability or the like. The thermoplastic polymer (especially polycarbonate) composition containing said stabilizer thus obtained is suitable for medical apparatus and medical material uses, especially a jacket case for an artificial dialyzer.
    • 包含100重量份具有特定化学结构的苄基化合物(A)和0.01至10重量份具有螺环结构的季戊四醇磷酸酯(B)的组合的新型γ射线稳定剂。 所述稳定剂优选以所述(A)的含量相对于100重量份的热塑性聚合物(聚碳酸酯等)为0.01〜10重量份的方式进行配合,所述(B)含有 相对于所述(A)100重量份,为0.01〜1重量份。 当热塑性聚合物进行γ射线照射时,所述稳定剂可以有效地保护热塑性聚合物免于物理性能的劣化和变黄; 在成型加工中,稳定剂添加聚合物几乎没有色调劣化,并且具有优异的色调,同时聚合物在成型时几乎没有分子量降低,并且显示出优异的热稳定性,成型性或 喜欢。 含有所得稳定剂的热塑性聚合物(特别是聚碳酸酯)组合物适用于医疗器械和医疗材料用途,尤其适用于人造透析器的外套。