会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 24. 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。
    • 26. 发明授权
    • Process for the preparation of aromatic polycarbonate
    • 芳香族聚碳酸酯的制备方法
    • US06265524B1
    • 2001-07-24
    • US09424318
    • 1999-11-22
    • Hidemi TakemotoToru SawakiKatsushi Sasaki
    • Hidemi TakemotoToru SawakiKatsushi Sasaki
    • C08G6400
    • C08G64/307C07C68/00C07C69/96
    • A process for producing an aromatic polycarbonate through an ester interchange reaction between an aromatic carbonic acid diester and an aromatic dihydroxy compound, wherein the aromatic carbonic acid diester is obtained through the decarbonylation reaction of an aromatic oxalic acid diester represented by the following general formula (1): wherein two Ar's are the same or different aromatic hydrocarbon groups having 6 to 14 carbon atoms, and has a hydrolyzable halogen content of 5 ppm or less. According to the present invention, an aromatic polycarbonate having a high molecular weight and excellent color can be easily produced without impairing ester interchange reactivity for the production of the aromatic polycarbonate by using an aromatic carbonic acid diester obtained through the decarbonylation of an aromatic oxalic acid diester and controlling the amount of hydrolyzable halogen contained in the aromatic carbonic acid diester to a value smaller than a predetermined value.
    • 通过芳族碳酸二酯和芳族二羟基化合物之间的酯交换反应制备芳族聚碳酸酯的方法,其中芳族碳酸二酯通过由以下通式(1)表示的芳族草酸二酯的脱羰反应获得 ):其中两个Ar是相同或不同的具有6至14个碳原子的芳族烃基,并且具有5ppm或更低的可水解卤素含量。根据本发明,具有高分子量和优异颜色的芳族聚碳酸酯可以 通过使用通过芳香族草酸二酯的脱羰获得的芳香族碳酸二酯和将芳香族碳酸二酯中含有的可水解卤素的量控制在较小的值,可以容易地制造而不损害用于制备芳族聚碳酸酯的酯交换反应性 超过预定值。