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    • 4. 发明授权
    • Catalyst for the polymerization of olefins
    • 用于烯烃聚合的催化剂
    • US06906154B2
    • 2005-06-14
    • US10181170
    • 2001-11-12
    • Masaki FushimiHirotoshi Takahashi
    • Masaki FushimiHirotoshi Takahashi
    • C08F4/654C08F4/649C08F4/651C08F10/00C08F110/06C08F4/42
    • C08F110/06C08F4/6494C08F4/651C08F2500/12
    • The present invention relates to catalyst components for the polymerization of olefins comprising a titanium compound, having at least a Ti-halogen bond, and at least two electron donor compounds supported on a Mg dihalide, said catalyst component being characterized by the fact that at least one of the electron donor compounds is selected from ethers containing two or more ether groups which are further characterized by the formation of complexes with anhydrous magnesium dichloride in an amount less than 60 mmoles per 100 g of MgCl2 and by the failure of entering into substitution reactions with TiCl4 or by reacting in that way for less than 50% by moles, and at least another electron donor compound is selected from esters of mono or polycarboxylic acids. Said catalyst components are able to produce propylene polymers which, for high values of xylene insolubility, show a broad range of isotacticity.
    • 本发明涉及用于聚合烯烃的催化剂组分,其包含至少具有Ti-卤键的钛化合物和至少两个负载在二卤化镁上的电子给体化合物,所述催化剂组分的特征在于至少 电子给体化合物之一选自含有两个或更多个醚基的醚,其进一步的特征在于与无水二氯化镁形成络合物,其量小于60毫摩尔/ 100g MgCl 2,和 由于不能与TiCl 4进行取代反应,或者以这种方式反应少于50摩尔%,并且至少另一个电子给体化合物选自单羧酸或多元羧酸的酯。 所述催化剂组分能够生产丙烯聚合物,其对于高二甲苯不溶性值显示出广泛的全同立构规整度。
    • 5. 发明授权
    • Modulator and demodulator
    • US06833755B2
    • 2004-12-21
    • US10611869
    • 2003-07-03
    • Hirotoshi TakahashiKazuo Akaike
    • Hirotoshi TakahashiKazuo Akaike
    • H03D300
    • H03D3/007H03C3/40
    • A modulator for modulating carrier wave signals with an in-phase component signal and a quadrature component signal includes a fixed frequency signal generating means for generating two fixed-frequency signals differing 90 degrees in phase, a variable frequency signal generating means for generating a signal whose frequency can be varied according to a modulated signal to be produced, an in-phase component carrier wave signal generating means for mixing one fixed-frequency signal and the variable-frequency signal to generate a carrier wave signal for an in-phase component, a quadrature component carrier wave signal generating means for mixing the other fixed-frequency signal and the variable-frequency signal to generate a carrier wave signal for a quadrature component, an in-phase component modulating means for modulating the in-phase component carrier wave signal with the in-phase component signal, and a quadrature component modulating means for modulating the quadrature component carrier wave with the quadrature component signal. A demodulator for demodulating an in-phase component modulated signal and a quadrature component modulated signal includes a fixed frequency signal generating means for generating two fixed-frequency signals differing 90 degrees in phase, a variable frequency signal generating means for generating a signal whose frequency can be varied according to a modulated signal, an in-phase component carrier wave signal generating means for mixing one fixed-frequency signal and the variable-frequency signal to generate a carrier wave signal for an in-phase component, a quadrature component carrier wave signal generating means for mixing the other fixed-frequency signal and the variable-frequency signal to generate a carrier wave signal for a quadrature component, an in-phase component demodulating means for demodulating an in-phase component modulated signal with the in-phase component carrier wave signal to produce an in-phase component signal, and a quadrature component demodulating means for demodulating a quadrature component modulated signal with the quadrature component carrier wave signal to produce a quadrature component signal.
    • 6. 发明授权
    • Modulator and demodulator
    • 调制器和解调器
    • US06747524B2
    • 2004-06-08
    • US10036428
    • 2002-01-07
    • Hirotoshi TakahashiKazuo Akaike
    • Hirotoshi TakahashiKazuo Akaike
    • H03C300
    • H03D3/007H03C3/40
    • A modulator for modulating carrier wave signals with an in-phase component signal and a quadrature component signal includes a fixed frequency signal generator for generating two fixed-frequency signals differing 90 degrees in phase, a variable frequency signal generator for generating a signal whose frequency can be varied according to a modulated signal, in-phase and quadrature component carrier wave signal generators for mixing respective ones of the fixed-frequency signals and the variable-frequency signal to generate carrier wave signals for in-phase and quadrature components, an in-phase component modulator for modulating the in-phase component carrier wave signal with the in-phase component signal, and a quadrature component modulator for modulating the quadrature component carrier wave with the quadrature component signal. Also, a demodulator is able to demodulate an in-phase component modulated signal and a quadrature component modulated signal from the modulator.
    • 用于以同相分量信号和正交分量信号调制载波信号的调制器包括:固定频率信号发生器,用于产生相位不同于90度的两个固定频率信号;可变频率信号发生器,用于产生频率可以 根据调制信号,同相和正交分量载波信号发生器来变化,用于混合固定频率信号和可变频率信号中的相应频率信号以产生用于同相和正交分量的载波信号, 用于用同相分量信号调制同相分量载波信号的相位分量调制器和用正交分量信号调制正交分量载波的正交分量调制器。 此外,解调器能够解调来自调制器的同相分量调制信号和正交分量调制信号。