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    • 3. 发明授权
    • Process for producing a polycarbonate in inert solvent
    • 在惰性溶剂中制备聚碳酸酯的方法
    • US5322919A
    • 1994-06-21
    • US796055
    • 1991-11-20
    • Kouichi KurosawaShigeki KuzeNoriyuki KunishiMasaya Okamoto
    • Kouichi KurosawaShigeki KuzeNoriyuki KunishiMasaya Okamoto
    • C08G64/20C08G64/30
    • C08G64/30
    • A process for producing polycarbonates which comprises transesterifying by reacting (A) at least one compound selected from the group consisting of aromatic dihydroxy compounds, aliphatic dihydroxy compounds, bisesters of aromatic dihydroxy compounds, bisesters of aliphatic dihydroxy compounds, carbonates of aromatic dihydroxy compounds and carbonates of aliphatic dihydroxy compounds, with (B) at least one compound selected from the group of diaryl carbonates, dialkyl carbonates, and alkylaryl carbonates, at a transesterification temperature of 100.degree. C. to 330.degree. C. in the presence of an inert solvent in an amount of 1 to 60% by weight based on the total of the theoretical amount of polycarbonate produced from the said compounds (A) and (B) and the amount of the inert solvent. According to the present invention, a polycarbonate which is excellent in color tone (transparency), heat resistance, and water resistance can be efficiently and simply produced at a low cost.
    • 一种制备聚碳酸酯的方法,其包括通过使(A)至少一种选自芳族二羟基化合物,脂族二羟基化合物,芳族二羟基化合物的混合物,脂族二羟基化合物的混合物,芳族二羟基化合物的碳酸酯和碳酸酯 的脂肪族二羟基化合物与(B)至少一种选自碳酸二芳基酯,碳酸二烷基酯和碳酸烷基芳基酯的化合物在100℃至330℃的酯交换温度下在惰性溶剂存在下反应 基于由所述化合物(A)和(B)生产的聚碳酸酯的理论量的总和与惰性溶剂的量的总量,为1至60重量%。 根据本发明,可以低成本有效且简单地制造色调(透明性),耐热性和耐水性优异的聚碳酸酯。
    • 5. 发明申请
    • Water Jet Peening Method and Apparatus Thereof
    • 喷水喷丸处理方法及装置
    • US20110005288A1
    • 2011-01-13
    • US12830169
    • 2010-07-02
    • Yuji MATSUIMasahiro ToomaAtsushi BabaKouichi KurosawaFujio Yoshikubo
    • Yuji MATSUIMasahiro ToomaAtsushi BabaKouichi KurosawaFujio Yoshikubo
    • B21D26/02
    • C21D7/06C21D11/00
    • A high-pressure water jet is injected from a nozzle scanned and a shock wave generated due to the collapse of bubbles included in the water jet is impacted on a WJP execution object. Tensile residual stress close to the surface of the WJP execution object is improved to compressive residual stress. The shock wave is detected by a pressure sensor and a shock wave generation frequency is obtained. Whether the obtained shock wave generation frequency is larger than a set value or not is decided. When the shock wave generation frequency is larger than the set value, a high-pressure pump is stopped and the injection of the water jet from the nozzle is stopped. When the shock wave generation frequency is equal to or smaller than the set value, the operation condition of the high-pressure pump is changed. The pressure of the water jet injected from the nozzle is increased and the WJP is executed for a part of the WJP execution object where the shock wave generation frequency is equal to or smaller than the set value. Improvement effect of the residual stress of the WJP execution object can be confirmed more accurately.
    • 从扫描的喷嘴喷射高压水射流,并且由于包含在水射流中的气泡的崩溃而产生的冲击波被冲击到WJP执行对象上。 靠近WJP执行物体表面的拉伸残余应力提高到压缩残余应力。 通过压力传感器检测冲击波,获得冲击波产生频率。 确定获得的冲击波产生频率是否大于设定值。 当冲击波产生频率大于设定值时,停止高压泵并停止喷嘴的喷射。 当冲击波产生频率等于或小于设定值时,改变高压泵的运行状态。 从喷嘴喷射的喷水的压力增加,对于冲击波产生频率等于或小于设定值的WJP执行对象的一部分执行WJP。 可以更准确地确认WJP执行对象的残余应力的改善效果。
    • 8. 发明授权
    • Water jet peening method and apparatus thereof
    • 喷水喷丸处理方法及装置
    • US08387427B2
    • 2013-03-05
    • US12830169
    • 2010-07-02
    • Yuji MatsuiMasahiro ToomaAtsushi BabaKouichi KurosawaFujio Yoshikubo
    • Yuji MatsuiMasahiro ToomaAtsushi BabaKouichi KurosawaFujio Yoshikubo
    • B21D7/06
    • C21D7/06C21D11/00
    • A high-pressure water jet is injected from a nozzle scanned and a shock wave generated due to the collapse of bubbles included in the water jet is impacted on a WJP execution object. Tensile residual stress close to the surface of the WJP execution object is improved to compressive residual stress. The shock wave is detected by a pressure sensor and a shock wave generation frequency is obtained. Whether the obtained shock wave generation frequency is larger than a set value or not is decided. When the shock wave generation frequency is larger than the set value, a high-pressure pump is stopped and the injection of the water jet from the nozzle is stopped. When the shock wave generation frequency is equal to or smaller than the set value, the operation condition of the high-pressure pump is changed. The pressure of the water jet injected from the nozzle is increased and the WJP is executed for a part of the WJP execution object where the shock wave generation frequency is equal to or smaller than the set value. Improvement effect of the residual stress of the WJP execution object can be confirmed more accurately.
    • 从扫描的喷嘴喷射高压水射流,并且由于包含在水射流中的气泡的崩溃而产生的冲击波被冲击到WJP执行对象上。 靠近WJP执行物体表面的拉伸残余应力提高到压缩残余应力。 通过压力传感器检测冲击波,获得冲击波产生频率。 确定获得的冲击波产生频率是否大于设定值。 当冲击波产生频率大于设定值时,停止高压泵并停止喷嘴的喷射。 当冲击波产生频率等于或小于设定值时,改变高压泵的运行状态。 从喷嘴喷射的喷水的压力增加,对于冲击波产生频率等于或小于设定值的WJP执行对象的一部分执行WJP。 可以更准确地确认WJP执行对象的残余应力的改善效果。