摘要:
A retardation film, formed by stretching a film having a norbornene-based ring-opening copolymer containing a structural unit (A) represented by the general formula (1) and a structural unit (B) represented by the general formula (2), wherein the content of structural unity (A) is not less than 5 mol % but not more than 95 mol % relative to the total amount of structural units (A) and (B).
摘要:
A retardation film, formed by stretching a film comprising a norbornene-based ring-opening copolymer containing a structural unit (A) represented by the following general formula (1): [in the formula (1), n represents an integer of any one of 0 and 1, R1 represents a hydrogen atom or the like, X1 represents a group represented by a formula: —CH═CH— or the like, a and b each independently represent an integer of 0 to 6, Ys each independently represent a methylene group or the like, and Zs each independently represent a methylene group or the like], and a structural unit (B) represented by the following general formula (2): [in the formula (2), m represents an integer of any one of 0 and 1, X2 represents a group represented by a formula: —CH═CH— or the like, and R2, R3, R4, and R5 each independently represent a hydrogen atom or the like], wherein a content of the structural unit (A) is not less than 5 mol % but not more than 95 mol % relative to a total amount of the structural units (A) and (B).
摘要:
A method for producing a norbornene derivative includes forming a Mannich base represented by any of general formulae (5) to (7) by reacting a carbonyl compound represented by any of general formulae (1) to (3) and an amine compound represented by general formula (4) with each other in an acidic solvent, to thereby obtain a reaction liquid comprising the Mannich base in the acidic solvent, wherein the acidic solvent comprises a formaldehyde derivative and 0.01 mol/L or more of an acid represented by formula HX; reacting the Mannich base and a diene compound represented by general formula (8) with each other by adding an organic solvent, a base in an amount of 1.0 to 20.0 equivalents to the acid, and the diene compound to the reaction liquid, and then heating the reaction liquid, to thereby form the norbornene derivative represented by any of general formulae (9) to (11).
摘要:
A method for producing a norbornene derivative includes forming a Mannich base represented by any of general formulae (5) to (7) by reacting a carbonyl compound represented by any of general formulae (1) to (3) and an amine compound represented by general formula (4) with each other in an acidic solvent, to thereby obtain a reaction liquid comprising the Mannich base in the acidic solvent, wherein the acidic solvent comprises a formaldehyde derivative and 0.01 mol/L or more of an acid represented by formula HX; reacting the Mannich base and a diene compound represented by general formula (8) with each other by adding an organic solvent, a base in an amount of 1.0 to 20.0 equivalents to the acid, and the diene compound to the reaction liquid, and then heating the reaction liquid, to thereby form the norbornene derivative represented by any of general formulae (9) to (11).
摘要:
A reverse dispersion retardation film is formed by stretching a film containing a norbornene-based ring-opening copolymer containing a structural unit (A) represented by a general formula (1) and a structural unit (B) represented by a general formula (2), wherein a total amount of the structural unit (A) and an exo-form structural unit, among the structural units (B), is not less than 20 mol % but not more than 65 mol % of all the structural units.
摘要:
A reverse dispersion retardation film, formed by stretching a film comprising a norbornene-based ring-opening copolymer containing a structural unit (A) represented by the following general formula (1): [in the formula (1), m represents an integer of any one of 0 and 1, R1 represents a hydrogen atom or the like, X1 represents a group represented by a formula: —CH2CH2— or the like, a and b each independently represent an integer of 0 to 6, Y represents a methylene group or the like, and represents a methylene group or the like] and a structural unit (B) represented by the following general formula (2): [in the formula (2), n represents an integer of any one of 0 and 1, X2 represents a group represented by a formula: —CH2CH2— or the like, R2, R3, R4, and R5 each represent a hydrogen atom or the like, wavy lines d and e each represent a configuration of any one of an endo and an exo, and a wavy line f represents a configuration of any one of an endo and an exo], wherein a total amount of the structural unit (A) and an exo-form structural unit, in which the wavy line f represents the exo configuration, among the structural units (B) is not less than 20 mol % but not more than 65 mol % of all the structural units.
摘要:
It is to provide a liquid crystal composition containing at least one type of optically active compounds of the following formulae (1) to (4), and a liquid crystal electro-optical element excellent in display quality. In each formula, C* is asymmetric carbon, and the respective symbols are as defined in description R1-A1-C*HX—Y-A2-(Z1-A3)m-C≡C-A4-(Z2-A5)n-R2 (1) R1-A1-C*HX1—Y1-A2-Z1-A3-Z2-A4-R2 (2) R5-Pn-C*HX2—CH2-A6-Y2-A7-R6 (3)
摘要:
A robot controller that controls a tandem arc welding system according to the present invention includes a leading-electrode correcting section that calculates a leading-electrode correction amount, used for correcting a displacement in a left-right direction and an up-down direction, from a leading-electrode changing amount calculated by a leading-electrode processing section; a leading-electrode correcting section that calculates a trailed-electrode correction amount, used for correcting a displacement in a rotational direction, from a trailed-electrode changing amount calculated by a trailed-electrode processing section; a rotational-displacement correction controlling processing section that calculates a rotational-center correction amount for correcting the displacement of the leading electrode; and a robot trajectory planning processing section that corrects a teaching position and a position of a rotational center of a welding torch during tracking correction. By such a structure, even if arc tracking is carried out at any rotational center, displacement of the leading electrode does not occur, so that defective welding does not occur.
摘要:
A specimens rotating device including a cooling source located in the central portion of a rotary plate, and a plurality of specimens arranged in the peripheral portion of the rotary plate in a manner to surround the cooling source. A plurality of heat pipes are arranged between the cooling source and the specimens so that each heat pipe is secured at one end to the cooling source and at the other end to one of the specimens. Each heat pipe has a working fluid sealed therein and its one end is exposed in a cooling fluid in a channel in the cooling source. Upon rotation of the rotary plate, the specimens are rotated along with the rotary plate, and the working fluid in the heat pipes is shifted toward the specimens. The working fluid absorbs heat from the specimens and evaporates into vapor which quickly returns to the cooling source due to the difference in vapor pressure to condense into condensate by releasing the latent heat of evaporation into the cooling source which constantly receives a fresh supply of cooling fluid, to enable the heat from the specimens to be effectively released to outside.
摘要:
To simplify the structure and improve the performance of virtualization software. There is provided virtualization unit for capturing a configuration access to a physical device from a virtual CPU, identifying a partition to which the physical device belongs from a device address of the physical device accessed by the virtual CPU, and if the physical device does not belong to the virtual CPU's own partition, replacing a content of a configuration register that identifies the physical device with information on a nonexistent dummy device, and notifying the resultant to the virtual CPU. The physical device not belonging to the virtual CPU's own partition is recognized as a named valid device by using a dummy device driver corresponding to the dummy device. The dummy device driver rejects execution of processing common to all physical devices that is requested by the virtual CPU and disturbs operation of a physical device belonging to another partition.