摘要:
A process for producing optically active polyketone which comprises allowing a mono-substituted ethylene to react with carbon monoxide in the presence of a palladium-phosphine complex formed from a phosphine represented by the following general formula (I) ##STR1## (wherein Ar.sup.1 is a phenyl group which may be substituted with one or more substituent groups selected from a lower alkyl group, a lower alkoxy group and a halogen) and a palladium salt. An isotactic (stereoregular) optically active polyketone having high molecular weight (Mn) in which the direction of a mono-substituted ethylene against ketone is a head to tail type (positional regularity) can be produced efficiently by a simple and easy process for the copolymerization of propylene, styrene or the like mono-substituted ethylene with carbon monoxide.
摘要翻译:一种制备光学活性聚酮的方法,其包括在由以下通式(I)表示的膦形成的钯 - 膦配合物的存在下使单取代的乙烯与一氧化碳反应(其中 Ar 1是可以被一个或多个选自低级烷基,低级烷氧基和卤素的取代基取代的苯基)和钯盐。 具有高分子量(Mn)的全同立构(有规立构)光学活性聚酮,其中单取代的乙烯对酮的方向是头 - 尾型(位置规则性)可以通过简单和容易的共聚方法有效地制备 丙烯,苯乙烯等单取代乙烯与一氧化碳。
摘要:
The present invention provides a novel torque detecting apparatus capable of detecting torque with a simple structure and high precision by way of transmitting drive force via a pair of rotary bodies that cause own relative position to be varied by effect of torque to enable detection of variation of resonant frequency corresponding to variation of the relative position under non-contact condition or by way of transmitting drive force via a pair of rotary bodies that cause own relative position to be varied by effect of torque to enable transmission of modulated signal corresponding to variation of the relative position under non-contact condition.
摘要:
A moving apparatus with a driving force assist mechanism traveled mainly by human power. This moving apparatus detects, in a non-contact manner, with respect to rotating portion such as traveling wheel, etc., rotation speed of the rotating portion to detect traveling state to deliver, from the driving force assist mechanism, assistant driving force corresponding to speed change information that a person who operates the moving apparatus intends to give on the basis of the detected traveling information to carry out traveling to thereby permit smooth traveling even in the case where traveling by only human power becomes difficult.