摘要:
Provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component substantially free from a polymerizable double bond and a cycloolefin random copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight, and a method for preparing said cycloolefin copolymer compositions.Also provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component having a polymerizable double bond and a cycloolefin copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight.Such cycloolefin copolymer compositions as mentioned above are excellent in transparency and mechanical strength and also excellent particularly in impact resistance.In particular, when a cycloolefin elastomer obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms, a cycloolefin and a non-conjugated diene of 5-20 carbon atoms is used as the above-mentioned hydrocarbon elastomer component having a polymerizable double bond, the resulting copolymer compositions are excellent particularly in transparency.
摘要:
There is provided a cycloolefin polymer composition comprising 8 to 40% by weight of a cycloolefin polymer [A] and 92 to 60% by weight of a cycloolefin polymer [B], both having specific properties, wherein a difference .DELTA.n.sub.D =.vertline.n.sub.D (A)-n.sub.D (B).vertline. between the refractive index n.sub.D (A) of the polymer [A] and the refractive index n.sub.D (B) of the polymer [B] is not more than 0.015. This composition is excellent in impact resistance, transparency and heat resistance, and has a good balance of these properties.There is also provided a cycloolefin copolymer composition comprising 8 to 40% by weight of a cycloolefin elastomer component [Aa] of an .alpha.-olefin, a specific cycloolefin and a non-conjugated diene which contains a polymerizable carbon-carbon double bond; and 92 to 60% by weight of a cycloolefin copolymer component [Ba] which is obtained by copolymerizing an .alpha.-olefin and a specific cycloolefin in the presence of the elastomer component [Aa]; wherein a difference .DELTA.n.sub.D =.vertline.n.sub.D (A)-n.sub.D (B).vertline. between the refractive index n.sub.D (Aa) of the component [Aa] and the refractive index n.sub.D (Ba) of the component [Ba] is not more than 0.015. This composition has excellent properties inherent in a cycloolefin random copolymer and is improved especially in impact resistance without tranding off its transparency.There is also provided a cycloolefin copolymer composition comprising 8 to 40% by weight of a cycloolefin elastomer component [A.alpha.] of an .alpha.-olefin and a specific cycloolefin which substantially contains no polymerizable carbon-carbon double bond; and 92 to 60% by weight of a cycloolefin copolymer component [B.alpha.] which is obtained by copolymerizing an .alpha.-olefin and a specific cycloolefin in the presence of the elastomer component [A.alpha.]; wherein a difference .DELTA.n.sub.D =.vertline.n.sub.D (A)-n.sub.D (B).vertline. between the refractive index n.sub.D (A.alpha.) of the component [A.alpha.] and the refractive index n.sub.D (B.alpha.) of the component [B.alpha.] is not more than 0.015. This composition has also excellent properties inherent in a cycloolefin random copolymer and is improved particularly in impact resistance without trading off its transparency.
摘要:
Provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component substantially free from a polymerizable double bond and a cycloolefin random copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight, and a method for preparing said cycloolefin copolymer compositions.Also provided are cycloolefin copolymer compositions comprising a hydrocarbon elastomer component having a polymerizable double bond and a cycloolefin copolymer component obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms and a cycloolefin in the presence of said hydrocarbon elastomer component, said composition containing said hydrocarbon elastomer component in an amount of 1-50% by weight.Such cycloolefin copolymer compositions as mentioned above are excellent in transparency and mechanical strength and also excellent particularly in impact resistance.In particular, when a cycloolefin elastomer obtained by copolymerization of an .alpha.-olefin of at least 2 carbon atoms, a cycloolefin and a non-conjugated diene of 5-20 carbon atoms is used as the above-mentioned hydrocarbon elastomer component having a polymerizable double bond, the resulting copolymer compositions are excellent particularly in transparency.
摘要:
A process for isomerization of an endo-form of aromatic group-containing norbornenes represented by the following formula (I) to an exo-form which comprises bringing the endo-form into contact with a solid acid catalyst. ##STR1## wherein p is 0 or an integer of 1 or more, q and r are each 0, 1 or 2, R.sup.1 to R.sup.15 are each independently hydrogen or halogen atom, aliphatic hydrocarbon group, aromatic hydrocarbon group or alkoxy group, R.sup.5 (or R.sup.6) are R.sup.9 (or R.sup.7) may be linked together through an alkylene group of 1-3 carbons or may be directly linked together.
摘要翻译:由下式(I)表示的含内酰基基团的降冰片烯内酯形式异构化的方法包括使内型物与固体酸催化剂接触。 (I)其中p为0或1或更大的整数,q和r各自为0,1或2,R 1至R 15各自独立地为氢或卤素原子,脂族烃基,芳族烃基或烷氧基 R 5(或R 6)为R 9(或R 7)可以通过1-3个碳的亚烷基连接在一起,或者可以直接连接在一起。
摘要:
The invention provides a fuel cell separator wherein a first reaction gas channel 131 has a first portion 41 and a second portion 51 located upstream of the first portion 41, the first portion 41 lying closest to the upstream end of the first reaction gas channel 131 among portions located between the second portion 51 and the downstream end of the first reaction gas channel 131, the second portion 51 lying closest to the downstream end among portions located between the upstream end and the first portion 41 of the first reaction gas channel 131. Second reaction gas channels 132, 133 do not exist between the first portion 41 and the upstream end but exist between the second portion 51 and the downstream end. The first reaction gas channel 131 is communicated with at least one (hereinafter referred to as the “specific channel”) of the second reaction gas channels 132, 133 in a portion (hereinafter referred to as the “specific portion”) between the first portion 41 and the downstream end.
摘要:
A fuel cell separator of the present invention is a plate-shaped fuel cell separator including a reaction gas supply manifold hole 21, a reactant gas discharge manifold hole 22, a groove-shaped first reactant gas channel 131, and one or more groove-shaped second reaction gas channels 132 and 133, wherein the first reactant gas channel 131 includes a first portion 41 and a second portion 51 located upstream of the first portion 41, and a cross-sectional area of a first specified portion 81 which is a continuous portion including at least the first portion of the first reactant gas channel 131 and/or a cross-sectional area of a second specified portion 82 which extends continuously from at least a downstream end of the first reactant gas channel 131 is/are smaller than cross-sectional areas of the second reactant gas channels 132 and 133.
摘要:
The present invention includes a fuel cell (11), a fuel gas supplying device (16), an oxidizing gas supplying device (17) and a control apparatus (20) and further includes at least one of a temperature control device (19) which controls the temperature of the fuel cell (11) and a humidifying device (24) which humidifies at least one of the fuel gas and the oxidizing gas to be supplied to the fuel cell (11), wherein: the control apparatus (20) controls at least one of the temperature control device (19), the humidifying device (24), the fuel cell (11) and the fuel gas supplying device (16) to cause the temperature of the fuel cell (11) to be equal to at least one of the dew point of the fuel gas and the dew point of the oxidizing gas, before cutting off an electrical connection between the fuel cell (11) and a load; and then the control apparatus (20) cuts off the electrical connection between the fuel cell (11) and the load.
摘要:
A polymer electrolyte fuel cell system of the present invention comprises cells 10, a stack 100, a temperature control device (160, 140, 40, 41), an anode gas supplier 110, a cathode gas supplier 120, and a controller 300. When a power generation output of the stack 100 is reduced, the controller 300 controls the anode gas supplier 110 and the cathode gas supplier 120 to reduce a supply amount of the anode gas and a supply amount of the cathode gas, and controls at least one of the anode gas supplier 110, the cathode gas supplier 120, and the temperature control device 100 to cause a dew point temperature of a gas supplied to at least one of the anode gas channels and the cathode gas channels to be higher relative the temperature of the stack 100 so that the gas becomes supersaturated or more supersaturated than prior to causing the dew point temperature of the gas to be higher.
摘要:
A fuel cell system of the present invention includes: a polymer electrolyte fuel cell (1) including an MEA (12) having a polymer electrolyte membrane (13), an anode (16a) and a cathode (16b); a fuel gas supplying device (4) which supplies a fuel gas to the anode (16a); an oxidizing gas supplying device (5) which supplies an oxidizing gas to the cathode (16b); a moisture flow rate detector (2) which detects at least one of a flow rate of moisture discharged from the cathode (16b) and a flow rate of moisture discharged from the anode (16a); storage means (22) for storing a reference moisture flow rate that is the moisture flow rate at the time of a reference output of the polymer electrolyte fuel cell (1); and an anode oxidizer (25) which compares the moisture flow rate detected by the moisture flow rate detector (2) with the reference moisture flow rate stored in the storage means (22) and oxidizes the anode (16a) based on a result of the comparison.
摘要:
A membrane-membrane reinforcing member assembly includes: a polymer electrolyte membrane (1) having a substantially quadrilateral shape; a membrane-like first membrane reinforcing member (10a) disposed on a first main surface (F10) of the polymer electrolyte membrane (1) to bend at a substantially right angle at a corner of the polymer electrolyte membrane (1) and extend along sides forming the corner; and a membrane-like second membrane reinforcing member (10b) disposed on a second main surface (F20) of the polymer electrolyte membrane (1) to bend at a substantially right angle at a corner of the polymer electrolyte membrane (1) and extend along sides forming the corner, and the first membrane reinforcing member (10a) and the second membrane reinforcing member (10b) are disposed to extend along four sides of the polymer electrolyte membrane (1) as a whole.