Abstract: A liquid-filled combination container includes a container having oxygen permeability and containing liquid in a containing portion, a barrier container having oxygen barrier properties and accommodating the container, at least one oxygen reactant that can react with oxygen in the barrier container, and a fluorescent material that varies in fluorescence time or fluorescence intensity according to a surrounding oxygen concentration. The oxygen reactant is fixed to at least any one of an outer surface of the container and an inner surface of the barrier container. The fluorescent material is provided on an inner surface of the container at a fluorescent material installation location apart from the containing portion of the container.

Abstract: To provide a method capable of producing a fluorinated polyether with a number-average molecular weight as theoretically calculated from a number-average molecular weight of a raw material polyether compound in high yield. The method for producing a fluorinated polyether, characterized in including a step (1) of introducing the raw material compound represented by Formula (X) having a Mw/Mn representing a molecular weight distribution of 1.30 or smaller, an inert gas, a fluorine gas, and a solvent into a reactor to fluorinate the raw material compound. R4—O—(R1—O)x—R5??(X) wherein R1 represents a divalent hydrocarbon group having 2 to 5 carbon atoms; R4 and R5 each independently represent a protecting group for a hydroxyl group; x represents an average degree of polymerization and is a real number of 2.7 to 15.

Abstract: To provide a method capable of producing a fluorinated polyether with a number-average molecular weight as theoretically calculated from a number-average molecular weight of a raw material polyether compound in high yield. A method for producing a fluorinated polyether, characterized by including: a step (1) of performing an operation of adjusting a molecular weight distribution of a polymeric compound having a structural unit (R1—O) to obtain the raw material compound represented by a formula (X); and after the step (1), a step (2) of introducing the raw material compound represented by the formula (X), an inert gas, a fluorine gas, and a solvent into a reactor to fluorinate the raw material compound, R4—O—(R1—O)x—R5 (X) wherein R1 represents a divalent hydrocarbon group having 2 to 5 carbon atoms; R4 and R5 each independently represent a protecting group for a hydroxyl group; x represents an average degree of polymerization and is a real number of 2.7 to 15.

Abstract: There is provided a fluorine-containing ether compound represented by following formula: R1—R2—CH2—R3[—CH2—R4—CH2R3?]n—CH2—R5—R6 (n is 1 or 2; R3 and R3? are a perfluoropolyether chain; R4 is a divalent linking group having one polar group; R2 and R5 are a divalent linking group having one or more polar groups; R2 has an oxygen atom at an end that is bonded to R1; R5 has an oxygen atom at an end that is bonded to R6; R1 and R6 in end group bonded to an oxygen atom at an end of R2 or R5; and R1 and R6 are an organic group having 1 to 50 carbon atoms, and at least one of them is a group in which a carbonyl carbon atom or nitrogen atom constituting an amide bond is bonded to a carbon atom of an organic group having 1 to 8 carbon atoms).

Abstract: The present invention provides a fluorine-containing ether compound that can form a lubricating layer which can increase chemical substance resistance of a magnetic recording medium even if the thickness is thin, and can be suitably used as a material for a lubricant for a magnetic recording medium. The fluorine-containing ether compound is represented by the following formula. R1—CH2—R2—CH2—OCH2—CHR3—CH2O—CH2—R4—CH2—R5 (in the formula, R2 and R4 are a perfluoropolyether chain; R1 and R5 are terminal groups which contain two or three hydroxyl groups, and in which respective hydroxyl groups are bonded to different carbon atoms, and carbon atoms to which the hydroxyl groups are bonded are bonded to each other via a linking group containing a carbon atom to which no hydroxyl group is bonded; R3 is represented by the following formula; and —(CH2)a—OH (a is an integer of 2 to 8)).

Abstract: The present invention provides a fluorine-containing ether compound represented by following formula. R1—CH2—R2—CH2—R3—CH2—R4—CH2—R5—CH2—R6—CH2—R7 (R2, R4, and R6 are perfluoropolyether chains having the structure R3 and R5 are each independently a linking group containing one or more hydroxyl groups, and R1 and R7 are each independently Formula (2).) —O—CH2—CH(OH)—([D]—CH(OH))s-[E]-CH2OH??(2) (s is 0 or 1, [D] and [E] each independently is a chain structure consisting of a combination of 2 to 5 methylene groups and 1 oxygen atom or a chain structure consisting of 1 to 4 methylene groups, provided that, in case where s is 0 and [E] contains an oxygen atom, the number of methy ne groups contained in [E] is 3 or more).

Abstract: An object is to provide a carbon material that can achieve high electrical conductivity or durability together with flexibility against compression and to provide a power storage device containing the carbon material inside an electrode. Provided are a carbon material having a bulk modulus K that is less than or equal to 2 GPa and an average graphene domain size L that is greater than or equal to 50 nm, a cathode for a power storage device and an anode for a power storage device in which the carbon material is used as a conductive agent, and a power storage device including a cathode and/or an anode including the carbon material as a conductive agent.

Abstract: The present invention provides a fluorine-containing ether compound represented by the following formula. R1—CH2—R2—CH2—R3—CH2—R4—CH2—R5—CH2—R6—CH2—R7 (In Formula (1), R2, R4, and R6 are perfluoropolyether chains, R3 is Formula (2), R5 is Formula (3), and R1 and R7 are each independently a terminal group having two or three polar groups, in which individual polar groups are bound to different carbon atoms and the carbon atoms to which the polar groups are bound are bound to each other via a linking group containing a carbon atom to which no polar group is bound).

Abstract: What is provided is a fluorine-containing ether compound represented by the following formula. R1—R2—O—CH2—R3—CH2—O—R4—R5 (R3 is a perfluoropolyether chain; R2 is represented by Formula (2), R4 is represented by Formula (3), R1 and R5 are hydrogen atoms or Formula (4); a and b in Formula (2) are an integer of 0 to 2, c in Formula (2) is an integer of 2 to 5, d and e in Formula (3) are an integer of 0 to 2, f in Formula (3) is an integer of 2 to 5; at least one of b in Formula (2) and e in Formula (3) is 1 or more; and k in Formula (4) is an integer of 3 to 6.