摘要:
An object of the present invention is to provide a process of producing propylene by contacting ethylene with a catalyst, where propylene is produced with high selectivity. The present invention relates to a production process of propylene, comprising contacting ethylene with a catalyst, wherein the catalyst comprises a zeolite as an active ingredient and an acid content in the outer surface of the zeolite is 5 % or less based on an acid content of the entire zeolite.
摘要:
A method for manufacturing a catalyst, which comprises regenerating a catalyst comprising a zeolite as an active ingredient and having an ethylene conversion lowered through reaction of producing propylene by bringing into contact with ethylene in a vapor phase, by bringing the catalyst into contact with a gas which does not comprise oxygen and comprises hydrogen having a hydrogen partial pressure of 0.01 MPa or more as an absolute pressure thereof.
摘要:
According to the present invention, a resin is added to crude copper phthalocyanine comprising an &agr;-form and a &bgr;-form crystals in combination and dry-milling is performed in a deoxygenated atmosphere, to provide copper phthalocyanine pigment composition of superior quality which reduces considerable expenditure of time and labor associated with the pigmentation process of crude copper phthalocyanine and the printing ink production process of a pigment, and printing ink comprising &bgr;-form copper phthalocyanine pigment superior quality.
摘要:
A printing method to increase the printing speed of a dot printer. Before printing on the basis of the dot data representative of an original dot pattern showing fonts, graphics and the like, the original dot pattern is converted by converting M (M.gtoreq.3) dots successive in the line direction into N (M>N.gtoreq.2, M.noteq.2N) dots. Then, printing is performed on the basis of the thus converted dot data. In a modification, conversion is performed by converting each dot into n (n.gtoreq.2) successive intermediate dots in the line direction and when 2n or more intermediate dots are successive, selecting every m {(2n-1).gtoreq.m.gtoreq.(n+1)}-th intermediate dot. In another modification, pattern conversion is effected by converting each dot into n (n.gtoreq.2) successive intermediate dots, in a zone where printing is possible at the same dot interval as that of the original dot pattern, selecting only dots out of the intermediate dots that are arranged at the same dot interval as that of the original dot pattern, and in the other zone, selecting every m {(2n-1).gtoreq.m.gtoreq.(n+1)}-th intermediate dot.
摘要:
A serial printer for printing recording paper has a printing head movable at a right angle with respect to the feeding direction of the recording paper. Vibration applying means, such as a piezoelectric element, is mounted on the outer circumference of the printing head for vibrating the printing head finely during the printing operation.
摘要:
A serial printer includes a reciprocably mounted carriage having a printing head, and a generally flat flexible cable extends between the carriage and a drive circuit. A generally flat flexible reinforcing plate comprising a shield electrode is disposed in superimposed relationship to the flexible cable.
摘要:
The present invention relates to pigment compositions which comprise a wet cake of a pigment whose moisture content is reduced to a range from 2 to 19 wt % while keeping the pigment in the wet cake substantially unchanged in size and shape, and non-agglomerated. The method for preparing such pigment compositions is also disclosed in which the wet cake is dehydrated to have such moisture content as indicated above. The pigment compositions may be dispersed in resins or varnishes to obtain colored resin compositions which have excellent properties.
摘要:
A compound of the formula [I] wherein R1, R2 and R3 are the same or different and each is hydrogen atom, wherein each symbol is as defined in the specification, a salt thereof or a prodrug thereof. The compound of the present invention, a salt thereof and a prodrug thereof are useful as factor Xa inhibitor and blood coagulation inhibitor, and are useful for the prophylaxis and/or treatment of diseases caused by blood coagulation or thrombus.
摘要:
According to the present invention, a resin is added to crude copper phthalocyanine comprising an .alpha.-form and a .beta.-form crystals in combination and dry-milling is performed in a deoxygenated atmosphere, to provide copper phthalocyanine pigment composition of superior quality which reduces considerable expenditure of time and labor associated with the pigmentation process of crude copper phthalocyanine and the printing ink production process of a pigment, and printing ink comprising .beta.-form copper phthalocyanine pigment superior quality.