摘要:
A butadiene polymer (i) having a cis bond unit content of at least 50% based on the total butadiene units, a number average molecular weight (Mn) of 1,000 to 10,000,000, and at least 80%, based on the total molecular chains, of living chains containing a transition metal of group IV of the Periodic table at a terminal thereof; a polymer (ii) obtained by modifying terminals of the polymer (i); and a polymer (iii) obtained by coupling the polymers (i). These polymers (i), (ii) and (iii) are obtained by polymerizing a conjugated diene monomer alone or with a copolymerizable monomer at a specific temperature in the presence of a catalyst comprising a compound (A) of a transition metal of group IV of the periodic table having a cyclopentadienyl structure and a co-catalyst (B) selected from organoaluminum-oxy compound (a) and others and optionally further by contacting the resultant polymer with a terminal modifier or a coupling agent.
摘要:
A process for preparing olefinic living polymers having a molecular weight distribution (Mw/Mn) of 1 to 1.3, comprising polymerizing an olefinic monomer having 2 to 20 carbon atoms at low temperatures in the presence of a catalyst comprising (A) a hafnium or zirconium-containing compound having one or two cyclopentadienyl backbones, (B) a triphenyl boron compound or a tetraphenyl borate compound and optionally (C) a specific mono-, di- or trialkylaluminum compound. When the catalyst comprising the zirconium-containing compound is prepared by further using a titanium-containing compound (D), the polymerization temperature can be raised.
摘要:
A catalyst comprising an organoaluminum compound and a vanadium chelate compound having the lability to cause olefins to undergo living coordination polymerization is contacted with a terminal diolefin to obtain a catalyst for living polymer production. When the above contact is:conducted in the presence of a cycloolefin or an internal olefin, the yield of a living polymer can be improved. By modifying all ends of the living polymer obtained, a telechelic olefin polymer is obtained in which all the polymer chains are modified with functional groups.
摘要:
A cigarette package of the invention has a casing (10), which includes an open end (12) that is opened/closed with a tongue lid (16). The tongue lid (16) has a lid portion (18), a tongue portion (22), and a magnet (28) fixed onto the tongue portion (22). A sheet (34) capable of being attracted to the magnet (28) is fixed onto a front wall (10f) of the casing (10). When the tongue lid (16) is in the closed position, the magnet (28) and the sheet (34) keep the tongue portion (22) attracted to the front wall (10f) in cooperation with each other by using the attracting force of the magnet (28). At the time of closing the tongue lid (16), the tongue portion (22) hits the front wall (10f) and thus makes a clap sound.
摘要:
A solar cell includes a semiconductor substrate having a photoelectric converting portion, a first electrode formed on a first main surface of the semiconductor substrate, and a second electrode connected to the first electrode on the first main surface. The first electrode includes a plurality of first connecting portions to be connected to an interconnector and a first non-connecting portion not connected to an interconnector. The first non-connecting portion is arranged between first connecting portions to electrically connect the first connecting portions together. The first connecting portion and first non-connecting portion are coupled forming an angle larger than 90° and smaller than 180°. A solar cell string and a solar cell module employ the solar cells.
摘要:
A tobacco smoke filter for use suitable in cigarettes comprising cellulose acetate filaments which have a C-shaped cross section. Such filter shows a good filtration performance with less impairment of the tobacco taste or flavor.
摘要:
A solar cell includes a semiconductor substrate having a photoelectric converting portion, a first electrode formed on a first main surface of the semiconductor substrate, and a second electrode connected to the first electrode on the first main surface. The first electrode includes a plurality of first connecting portions to be connected to an interconnector and a first non-connecting portion not connected to an interconnector. The first non-connecting portion is arranged between first connecting portions to electrically connect the first connecting portions together. The first connecting portion and first non-connecting portion are coupled forming an angle larger than 90° and smaller than 180°. A solar cell string and a solar cell module employ the solar cells.
摘要:
A package (2) has a case (4) formed in a substantially rectangular parallelepiped shape and having an open end (12) at a top thereof; a tongue lid (6) rotatably connected to a rear edge of the open end (12) through a lid hinge (26), the tongue lid (6) having a lid portion (5) for opening/closing the open end (12) and a tongue (7) connected to a tip end of the lid portion (5) through a tongue hinge (28), in which the tongue (7) is superimposed upon a front wall (14) of the case (4) when the lid portion (5) is in a closed position; and an inner holder (10) contained in the case (4), the inner holder (10) having a recessed area (10a) for holding a content, wherein the case (4), the tongue lid (6) and the inner holder (10) are made of transparent or translucent material, and the recessed area (10a) is positioned away from a bottom wall (20) and side walls (18) of the case (4).
摘要:
A cigarette box includes an inner case (2) enclosing a bundle of cigarettes, an outer case (8) enclosing the inner case (2) in a manner allowing the inner case (2) to be moved up and down, and having a hinged lid (12) forming a part of a top wall thereof and a window (10) formed in a side wall to partly expose the inner case (2), and a link (20) connecting the inner case (2) and the hinged lid (12). When the inner case (2) is pushed up through the window (10) of the outer case (8), the link (20) urges the hinged lid (12) upward so that hinged lid (12) is opened. In an open position, the hinged lid (12) provides an access opening (16) projecting from the plane of the top wall of the outer case (8) and facing sideways of the outer case (8).
摘要:
According to one embodiment, a broadcast recording apparatus includes a tuner unit which receives a broadcast signal, demodulates the received signal, and then, outputs a signal of a program, a recording unit which records the program signal outputted by the tuner unit in a recording medium together with management information of the program, a reproducing unit which reproduces the program signal recorded in the recording medium, a reservation setting unit which, upon receiving an instruction signal while the reproducing unit reproduces the program signal, sets reservation information on a program of a next time in accordance with the management information, and a reserved image recording unit which, when a time indicated by the reservation information has come, controls the recording unit to record the program signal in the recording medium.