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    • 3. 发明授权
    • Biodegradable resin composition
    • 生物降解树脂组合物
    • US07812066B2
    • 2010-10-12
    • US12442814
    • 2007-10-11
    • Akira TakenakaHiroaki Kishimoto
    • Akira TakenakaHiroaki Kishimoto
    • C08K5/34C08K5/10C08K5/5317D06P1/52
    • C08K5/20C08K5/10C08K5/5317C08K2201/014C08L67/04C08L71/02C08L101/16C08L2666/22
    • The invention relates to a biodegradable resin composition containing a biodegradable resin, a plasticizer and a crystal nucleus agent, the plasticizer being a compound containing two or more ester groups in the molecule thereof, wherein at least one alcohol component constituting the ester contains an alkylene oxide having 2 to 3 carbon atoms, added in the average amount of 0.5 to 5 moles per one hydroxyl group, and the crystal nucleus agent is a mixture of the following crystal nucleus agent (1) and crystal nucleus agent (2); the crystal nucleus agent (1) being the following crystal nucleus agent (1-1) or crystal nucleus agent (1-2): crystal nucleus agent (1-1): at least one selected from compounds having a hydroxyl group and an amide group in the molecule thereof; and crystal nucleus agent (1-2): at least one selected from hydroxy fatty acid esters; crystal nucleus agent (2): at least one selected from a metal salt of phenylphosphonic acid, a metal salt of a phosphate, a metal salt of an aromatic dialkyl sulfonate, a metal salt of rosinic acids, an aromatic carboxylic acid amide, rosinic acid amide, carbohydrazides, N-substituted ureas, salts of melamine compounds and uracils.
    • 本发明涉及含有生物可降解树脂,增塑剂和结晶核剂的生物降解性树脂组合物,该增塑剂是其分子中含有两个或更多个酯基的化合物,其中至少一种构成酯的醇组分含有烯化氧 每个羟基的平均含量为0.5〜5摩尔,结晶核剂为以下结晶核剂(1)和结晶核剂(2)的混合物,为2〜3个碳原子。 晶核剂(1)为以下晶核剂(1-1)或晶核剂(1-2):晶核剂(1-1):选自具有羟基和酰胺的化合物中的至少一种 在其分子中; 和晶核剂(1-2):选自羟基脂肪酸酯中的至少一种; 晶核剂(2):选自苯基膦酸的金属盐,磷酸金属盐,芳族二烷基磺酸盐的金属盐,松香酸金属盐,芳香族羧酸酰胺,松香酸中的至少一种 酰胺,碳酰肼,N-取代的脲,三聚氰胺化合物和尿嘧啶的盐。
    • 5. 发明授权
    • Biodegradable resin composition
    • 生物降解树脂组合物
    • US07652085B2
    • 2010-01-26
    • US11596294
    • 2005-05-10
    • Akira TakenakaShogo Nomoto
    • Akira TakenakaShogo Nomoto
    • C08K5/103
    • C08K5/0016C08J3/201C08J2300/16C08J2367/04C08K5/0008C08K5/0083C08L2201/06C08L67/04C08L101/16
    • The present invention relates to a method of producing a biodegradable resin composition, which includes step (1) of mixing a biodegradable resin, a plasticizer, and a crystal nucleating agent with one another at the melting point (Tm) of the biodegradable resin or more, wherein the crystal nucleating agent is an aliphatic compound having, in its molecule, two or more of at least one group selected from an ester group, a hydroxyl group and an amide group, and step (2) of thermally treating the resulting biodegradable resin composition at a temperature of from the glass transition temperature (Tg) to less than Tm of the composition, as well as a biodegradable resin composition, which contains a biodegradable resin, a plasticizer, and the above crystal nucleating agent, and which satisfies the following conditions: the haze thereof with a thickness of 0.5 mm after thermal treatment at 60° C. for 36 or 60 hours is 20% or less; the storage elastic modulus (E′) at a temperature of 25° C. and a frequency of 50 Hz is 1×108 to 2×109 Pa; and the storage elastic modulus (E′) at a temperature of 60° C. and a frequency of 50 Hz is 1×107 to 1×109 Pa.
    • 生物降解性树脂组合物的制造方法技术领域本发明涉及一种生物降解性树脂组合物的制造方法,其包括将生物降解性树脂,增塑剂和结晶成核剂在生物降解性树脂的熔点(Tm)以下进行混合的工序(1) 其中,所述结晶成核剂为在分子中具有选自酯基,羟基和酰胺基中的至少一种的2种以上的脂肪族化合物,和对所得生物降解性树脂进行热处理的工序(2) 在组合物的玻璃化转变温度(Tg)至小于Tm的温度下的组成以及包含可生物降解树脂,增塑剂和上述晶体成核剂的可生物降解的树脂组合物,其满足以下 条件:在60℃热处理36或60小时后,其雾度为0.5mm,为20%以下; 在25℃的温度和50Hz的频率下的储能弹性模量(E')为1×10 8至2×10 9 Pa; 并且在60℃的温度和50Hz的频率下的储能弹性模量(E')为1×10 7至1×10 9 Pa。
    • 8. 发明授权
    • Lip seal device
    • 唇形密封装置
    • US5149106A
    • 1992-09-22
    • US834980
    • 1992-02-14
    • Akira TakenakaKeiichi ShimasakiHiroshi Kanayama
    • Akira TakenakaKeiichi ShimasakiHiroshi Kanayama
    • F16J15/32
    • F16J15/3224F16J15/3208
    • A lip seal device comprises: a case surrounding a rotary shaft; a lip having an outer peripheral base end portion secured to the case, and an inner peripheral front end portion curved towards a sealed fluid so as to be in sliding contact with said rotary shaft; and an annular groove formed in the sealing surface of the front end portion of the lip. The lip seal device further comprises an elastic retaining member arranged in such a manner that the outer peripheral base end portion secured to the case, the inner peripheral front end portion is laid over the front end portion of the so as to push the front end portion of the lip against the rotary shaft, and the front end portion of the retaining member is held spaced from the rotary shaft, whereby even when the lip seal device is vibrated or the rotary shaft vibrates, an excellent sealing effect can be expected.
    • 唇形密封装置包括:围绕旋转轴的壳体; 具有固定到所述壳体的外周基端部的唇部和朝向所述密封流体弯曲成与所述旋转轴滑动接触的内周前端部; 以及形成在唇缘的前端部的密封面中的环状槽。 唇形密封装置还包括弹性保持构件,其以使得外周基端部固定到壳体的方式布置,内周前端部分布置在前端部分上,以推动前端部分 并且保持构件的前端部保持与旋转轴间隔开,由此即使当唇部密封装置振动或旋转轴振动时,也能够期望出色的密封效果。