摘要:
An electrostatic actuator includes: a diaphragm constituting one electrode; and an electrode substrate on which an opposed electrode opposite to the diaphragm has been formed with a gap, in which the opposed electrode is formed in a grooved portion, having a rectangular shape in plan view, formed on the electrode substrate and is formed in a plurality of steps such that the gap gradually increases stepwise toward a center part in a long edge direction of the grooved portion.
摘要:
A droplet-discharging head comprising: a nozzle substrate in which a plurality of nozzle holes for discharging droplets are formed; a cavity substrate in which a recess to serve as a discharging chamber for pooling the droplets is formed, the recess having a diaphragm formed in a bottom face thereof; an electrode substrate in which an individual electrode opposite to the diaphragm for driving the diaphragm is formed; and a reservoir substrate having a recess to serve as a common droplet chamber for supplying droplets to the discharging chamber, a penetrating hole for transporting droplets to the discharging chamber from the common droplet chamber, and a nozzle communicating hole for transporting droplets to the nozzle hole from the discharging chamber, wherein the reservoir substrate has the nozzle substrate bonded to one face thereof and has the cavity substrate bonded to the other face thereof.
摘要:
An electrostatic actuator is provided which can increase the amount of displacement of a diaphragm, thereby improving the ejection pressure when employed as a drive mechanism in a droplet ejection head. The electrostatic actuator comprises: a first substrate having a diaphragm functioning as a first electrode; and a second substrate coupled to the first substrate and having a second electrode opposite the first electrode, wherein: the diaphragm is displaced with an electrostatic force generated by applying a voltage between the electrodes; and an insulation film is provided on a coupling surface of the first substrate which couples with the second substrate, and an area of the insulation film corresponding to the diaphragm has a reduced thickness region.
摘要:
A catalyst comprises a composition resulting from mutual contact of the following Components (A), (B), (C) and (D): said Component (A) being a reaction product resulting from mutual contact of components (a), (b) and (c); said component (a) being represented by the formula Me.sup.1 R.sup.1.sub.p (OR.sup.2).sub.q X.sup.1.sub.4-p-q I wherein R.sup.1 and R.sup.2 each are a C.sub.1 -C.sub.24 hydrocarbon moieties, X.sup.1 is a hydrogen atom or a halogen atom, Me.sup.1 is titanium, zirconium or hafnium, p and q are 0.ltoreq.p.ltoreq.4, 0.ltoreq.q.ltoreq.4 and 0.ltoreq.p+q.ltoreq.4, said component (b) being represented by the formula Me.sup.2 R.sup.3.sub.m(OR.sup.4).sub.n X.sup.2.sub.z-m-n II wherein R.sup.3 and R.sup.4 each are a C.sub.1 -C.sub.24 hydrocarbon moieties, X.sup.2 is a hydrogen atom or a halogen atom, Me.sup.2 is an element of Groups I to III in the Periodic Table, z is a valence of Me.sup.2, and m and n are 0.ltoreq.m.ltoreq.z, 0.ltoreq.n.ltoreq.z and 0
摘要:
Olefin is polymerized using a catalyst comprising a solid catalyst component and an organometallic compound, the solid catalyst component being prepared by reacting 1 a reaction product obtained by reacting the reaction product of Si oxide and/or Al oxide and Ti compound or both Ti compound and V compound (Ti.V component) with organic Al compound, with 2 a reaction product obtained by the reaction of Mg halide, a compound of the general formula Me(OR).sub.n X.sub.z-n and Ti.V component (optional component), and further reacting the reaction product of the above 1 and 2 with 3 a compound of the general formula R.sub.p Si(OR).sub.q X.sub.4-p-q.
摘要:
Polyolefins exhibiting better particle properties are prepared by polymerizing an olefin or olefins in the presence of a catalyst comprising a solid catalyst component and an organometallic compound, said solid catalyst component being prepared by the reaction of the following components [I] and [II]:[I] a reaction product obtained by reacting the following components (1), (2) and (3) with one another in the presence of a compound represented by the general formula ROH wherein R is a hydrocarbon radical having 1 to 20 carbon atoms or an organic residue containing such an element as oxygen, nitrogen, sulfur, or chlorine:(1) a silicon oxide and/or an aluminum oxide;(2) a reaction product obtained by the reaction of a magnesium halide and compound represented by the general formula Me(OR).sub.n X.sub.z-n wherein Me represents an element of Groups I to IV in the Periodic Table, z represents the valence of the element Me, n is 0
摘要翻译:通过在包含固体催化剂组分和有机金属化合物的催化剂存在下聚合烯烃或烯烃来制备表现出更好颗粒性能的聚烯烃,所述固体催化剂组分通过以下组分[I]和[II]的反应制备: [I]通过使下列组分(1),(2)和(3)在通式ROH表示的化合物的存在下反应获得的反应产物,其中R是具有1至20个碳原子的烃基 或含有氧,氮,硫或氯等元素的有机残渣:(1)氧化硅和/或氧化铝; (2)通过卤化镁与通式Me(OR)n X z-n表示的化合物反应获得的反应产物,其中Me表示周期表中第I至IV族的元素,z表示元素的化合价 Me,n为0
摘要:
A process for producing polyethylene materials in which ultrahigh molecular polyethylene is molded by compression, extrusion or rolling and stretching in a solid phase and at specified temperatures. The polymer is formed by a selected multi-stage polymerization with the use of a composite catalyst of specified compositions. Fibers or films are obtained with improved strength and modulus qualities.
摘要:
A mixture of silica powder and carbon powder is heated in a mixture of NH.sub.3 gas and C.sub.m H.sub.n gas. Only silica powder may be heated in a mixture of NH.sub.3 gas and C.sub.m H.sub.n gas.
摘要翻译:将二氧化硅粉末和碳粉末的混合物在NH 3气体和C m H n气体的混合物中加热。 只有二氧化硅粉末可以在NH 3气体和C m H n气体的混合物中加热。
摘要:
A modified olefinic polymer is obtained by fluorinating an ethylene/.alpha.-olefin copolymer having the following properties (i) to (iv), said ethylene/.alpha.-olefin copolymer being prepared by copolymerizing ethylene and an .alpha.-olefin having 3 to 12 carbon atoms in the presence of a catalyst comprising a solid catalyst component and an organoaluminum compound, said solid catalyst component containing at least magnesium and titanium:(i) Melt index: 0.01-100 g/10 min(ii) Density: 0.860-0.910 g.cm.sup.3(iii) Maximum peak temperature (Tm) as measured according to a differential scanning calorimetry (DSC) should be not lower than 100.degree. C.(iv) Insolubles in boiling n-hexane should be not less than 10% by weight.
摘要:
A polyethylene resin composition comprising (A) 50-99.9 parts by weight of an ethylene polymer and (B) 0.1-50 parts by weight of a modified ethylene polymer obtained by fluorinating an ethylene polymer having a density in the range of larger than 0.910 g/cm.sup.3 and 0.970 g/cm.sup.3 ; said ethylene polymer being prepared by polymerizing ethylene in the presence of a catalyst comprising a catalyst component containing at least one member selected from the group consisting of a titanium compound, vanadium compound and chromium compound, and optionally an organoaluminum compound.