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    • 3. 发明授权
    • Avermectin aglycon synthase genes
    • 阿维菌素糖苷配基合成酶基因
    • US07371548B2
    • 2008-05-13
    • US11005196
    • 2004-12-07
    • Satoshi OmuraHaruo Ikeda
    • Satoshi OmuraHaruo Ikeda
    • C12N9/00C12N1/20C07H21/04
    • C12P19/623C12N15/52
    • The present invention relates to an isolated DNA which comprises a DNA sequence encoding avermectin aglycon synthase domains that corresponds to multifunctional enzyme proteins involved in the biosynthesis of a polyketide compound, or its mutants having avermectin aglycon synthase activity, particularly functional modules and submodules in the DNA sequence derived from Streptomyces avermitilis, a polypeptide or mutants thereof encoded by the DNA or the mutants, a vector containing the DNA or the mutants, a host cell transformed with the DNA, the mutants thereof, or the vector, and a method for producing avermectin.
    • 本发明涉及分离的DNA,其包含编码与参与聚酮化合物的生物合成的多功能酶蛋白相对应的除虫菌素糖苷配基合成酶结构域的DNA序列,或其具有除虫菌素糖苷配基合成酶活性的突变体,特别是DNA中的功能性模块和子模块 衍生自阿维链霉菌的序列,由DNA或突变体编码的多肽或其突变体,含有DNA或突变体的载体,用DNA转化的宿主细胞,其突变体或载体,以及生产除虫菌素的方法 。
    • 10. 发明申请
    • WELDING MATERIAL AND FUEL TANK THEREBY WELDED
    • 焊接材料和燃油箱焊接
    • US20080021158A1
    • 2008-01-24
    • US11778417
    • 2007-07-16
    • Kei TakahashiFumio AsadaHaruo IkedaOsamu Miyachi
    • Kei TakahashiFumio AsadaHaruo IkedaOsamu Miyachi
    • C08L51/00
    • C08L23/04B32B1/02B32B27/32C08F255/00C08F255/02C08L51/06C08L2314/06C08L2666/06C08L2666/24C08L2666/04C08L2666/02
    • To provide a welding material for a fuel tank, which can be readily welded to a fuel tank made of a resin and maintain the welded strength even after being in contact with a fuel such as gasoline and yet is excellent in the long-term performance, a fuel tank attachment constituted by the welding material, and a fuel tank thereby welded. A welding material for a fuel tank, comprising a modified polyethylene resin composition (Z) comprising from 0.5 to 95 wt % of a modified polyethylene resin (X) having at least one monomer selected from the group consisting of an unsaturated carboxylic acid and its derivative, grafted to a polyethylene resin (A) having a density of from 0.910 to 0.965 g/cm3 and a melt flow rate (temperature: 190° C., load: 2.16 kg) of from 0.1 to 5.0 g/10 min, and from 5 to 99.5 wt % of an unmodified polyethylene resin (Y) having a density of from 0.930 to 0.965 g/cm3, a melt flow rate (temperature: 190° C., load: 2.16 kg) of from 0.01 to 5.0 g/10 min and a melt flow rate ratio (high load melt flow rate HL-MFR (temperature: 190° C., load: 21.6 kg)/melt flow rate MFR (temperature: 190° C., load: 2.16 kg)) of from 40 to 270, and having a density of from 0.938 to 0.965 g/cm3 and a melt flow rate (temperature: 190° C., load: 2.16 kg) of from 0.05 to 1.0 g/10 min.
    • 为了提供一种用于燃料箱的焊接材料,其可以容易地焊接到由树脂制成的燃料箱中并且即使在与诸如汽油的燃料接触之后也保持焊接强度,并且长期性能优异, 由焊接材料构成的燃料箱附件和由此焊接的燃料箱。 1.一种燃料箱用焊接材料,其特征在于,含有改性聚乙烯树脂组合物(Z),其含有0.5〜95重量%的具有选自不饱和羧酸及其衍生物中的至少一种单体的改性聚乙烯树脂(X) 接枝到密度为0.910〜0.965g / cm 3的聚乙烯树脂(A),熔体流动速率(温度:190℃,负荷2.16kg)为0.1〜 5.0g / 10min,和5〜99.5wt%的密度为0.930〜0.965g / cm 3的未改性聚乙烯树脂(Y),熔体流动速率(温度:190° 熔体流动速率比(高负荷熔体流动速率HL-MFR(温度:190℃,负荷21.6kg))/熔体流动速率MFR(C,负荷2.16kg)为0.01〜5.0g / (温度:190℃,负载2.16kg))为40〜270,密度为0.938〜0.965g / cm 3,熔体流动速率(温度:190° C.,负荷:2.16kg)为0.05-1.0g / 10min。