Abstract:
A gas insulated switchgear is provided which uses an SF 6 substitute gas as an insulating gas and thus causes reduced environmental load while achieving high dielectric strength and excellent interrupting performance. The gas insulated switchgear includes a switchgear housed in a container filled with an insulating gas. The insulating gas contains CF 3 I and CO 2 with CF 3 I present at a pressure ratio of 15% or more
Abstract:
A process for producing a fluorine-containing acrylic acid ester represented by CH 2 =C(Rf) (COOR) characterized in that 1-bromo-1-perfluoroalkylethene represented by CH 2 =CBr-Rf, or 1,2-dibromo-1-perfluoroalkylethane represented by CH 2 CBr-CHBr-Rf is allowed to react with an alcohol represented by ROH in the presence of a palladium catalyst, carbon monoxide, and two or more kinds of bases. The fluorine-containing acrylic acid ester is a useful compound having wide applications in materials for pharmaceuticals and functional polymers.
Abstract:
A process for producing a fluorinated alcohol from a fluoroalkyl halide through a one-stage reaction in high yield with high selectivity without using a highly toxic compound such as a heavy metal compound, which is difficult to handle or treat. The process, which is for producing a fluorinated alcohol represented by the general formula (2): Rf(A)OH (2) (wherein Rf represents C1-10 perfluoroalkyl and A represents a C3-10, linear or branched, saturated hydrocarbon group), is characterized by reacting a fluoroalkyl halide represented by the general formula (1): Rf(A)X (1) (wherein Rf and A are the same as defined above and X represents halogeno) with an alkali metal salt of 4-hydroxybutyric acid in Ϝ-butyrolactone as a solvent.
Abstract:
A vehicle pedal arm has a first rib connecting a first hole, into which a first shaft is inserted, and a peripheral edge on a side of a rear wall continuous of at least one of a left side wall and a right side wall in an arm body continuous upward from a first bent portion that bends in a rear direction side of a vehicle as being a lower side of the vehicle, to extend on a first straight line connecting a depressing portion and the first hole in a side view, and a second rib connecting a second hole, into which a second shaft is inserted, and the peripheral edge on a side of the rear wall continuous of the at least one of the both side walls to extend on a second straight line connecting the depressing portion and the second hole in a side view.
Abstract:
1,2-Bis(2,2-difluoroethoxy)ethane which can be used as electrolyte solution of a non-aqueous electrolyte secondary battery is provided. Used are 1,2-Bis(2,2-difluoroethoxy)ethane represented by the following formula (1) :
and a method for manufacturing 1,2-bis(2,2-difluoroethoxy)ethane including the step of reacting 2-(2,2-difluoroethoxy)ethanol represented by the following formula (2) with a compound represented by the general formula (3) in a basic compound or a basic compound-containing solvent:
Abstract:
[Problem] To provide a fluorine-containing phosphate ester-amide which has high flame retardancy such as exhibiting flame retardant effects at a small quantity of addition, and sufficient hydrolysis resistance. [Solution] A fluorine-containing phosphate ester-amide represented by general formula (1). (In the formula, R1 and R2 are the same or different and represent a branched or linear alkyl group having 1 to 20 carbon atoms in which at least one carbon bonded to a nitrogen atom is a secondary or tertiary carbon, wherein R1 and R2 may have a substituent group selected from the group consisting of an alkoxy group, a hydroxy group, an amino group, a methyl amino group, an ethyl amino group, a dimethyl amino group, diethyl amino group and a fluorine atom. In addition, R1 and R2 may be bonded together to form a five- to eight-membered cyclic structure. X and Y are the same or different and represent a hydrogen atom or a fluorine atom, and n and m represent an integer of 1 to 6.)