11 results about "Fluorohydrocarbon" patented technology

A method of producing fluoroolefin includes contacting a fluorocarbon represented by Formula (1): CX1X2F—CX3X4H with a catalyst to produce a fluoroolefin represented by Formula (2): CX1X2═CX3X4, and satisfies either (I) or (II). (I) The catalyst includes 65% by mass or more of α-alumina and has an amount of Lewis acid sites of from 0.005 to 0.10 mmol / g as measured by ammonia temperature-programmed desorption method. (II) A conversion rate 10 hours after contacting the fluorocarbon with the catalyst is from 7.0 to 13.0%, and a conversion retention rate, which is a ratio of the conversion rate 50 hours after contact to a conversion rate after 10 hours, is 69% or higher.

Provided is a composition for a refrigerator, which is a mixture of a mixed refrigerant that has a low global warming potential and contains carbon dioxide, and a refrigerator oil that has excellent compatibility with the mixed refrigerant and that has excellent thermal stability with respect to the mixed refrigerant. The composition for a refrigerator contains a refrigerant mixture and a refrigerator oil containing a base oil, the refrigerant mixture containing a fluorinated hydrocarbon compound and carbon dioxide, and the base oil containing at least one selected from the group consisting of polyvinyl ethers and polyol esters.

A method of treating a process waste stream contaminated with fluorinated hydrocarbons, the method comprising: adding a fluoride anion scavenger to the process waste stream; and contacting the process waste stream with a platinum group metal catalyst to defluorinate the fluorinated hydrocarbons liberating fluoride anions which are scavenged by the fluoride scavenger.

A method of producing fluoroolefin includes contacting a fluorocarbon represented by Formula (1): CX1X2F—CX3X4H with an alumina-containing catalyst to produce a fluoroolefin represented by Formula (2): CX1X2═CX3X4, in which the alumina-containing catalyst satisfies at least one of the following conditions (I) or (II). (I) A total content of alkali metal elements and alkaline earth metal elements is 100 ppm by mass or less. (II) A Si content is 1000 ppm by mass or less.

The present disclosure mainly addresses the problem of providing a novel method for producing a fluoroolefin.　Provided as a solution is a method for producing a fluoroolefin represented by general formula (1): CX1X2=CX3X4 (where X1, X2, X3, and X4 are identical or different and each represent a hydrogen atom, a fluorine atom, or a chlorine atom, and at least one of X1, X2, X3, and X4 is a fluorine atom), said method comprising a dehydrohalogenation step for bringing a fluorocarbon represented by general formula (2): CX1X2HCX3X4Y (where X1, X2, X3, and X4 are the same as above, and Y is a fluorine atom or a chlorine atom) into contact with a noble metal catalyst to perform dehydrohalogenation.

The present application relates to fluorinated hydrocarbon refining purification technical field, specifically to the purification device and method of pharmaceutical grade R134a, the device includes industrial grade R134a product tank, initial separation condenser, feed pump, degassing tower, rectifying tower, product condenser, adsorber and pharmaceutical grade product tank connected in turn, the purification method is: the raw material is condensed to remove non-condensable gas, the liquid phase enters the rectifying tower to remove light components, then enters the rectifying tower to remove heavy components and isomers, the gas phase condenses after the top of the rectifying tower and enters the adsorber filled with gradient fluorinated modified activated carbon, and the R1122 impurities and moisture are deeply removed, the present application adopts HF-N2 gradient concentration and temperature modification activated carbon, the micropore aperture is accurately controlled to 0.6-0.9nm and the polar C-F bond is formed on the surface, the double targeted capture of R1122 is realized, and finally the high-quality pharmaceutical grade R134a product with purity ≥99.99% and no R1122 detection is stably obtained.

A radiation-sensitive resin composition includes: a base resin comprising a structure unit having an acid-dissociable group; and a radiation-sensitive acid generator which comprises compounds represented by formula (2) and formula (3), and optionally a compound represented by formula (1). R1-R3 are each independently a group having a cyclic structure; X11-X32 are each independently a hydrogen atom, a fluorine atom, or a fluorinated hydrocarbon group. At least one of X11 or X12, at least one of X21 or X22, and at least one of X31 or X32 are not a hydrogen atom, respectively. A11-A32 are each independently a hydrogen atom, or a hydrocarbon group having a carbon number of 1 to 20. The radiation-sensitive resin composition does not comprise a ketone-based solvent. The the radiation-sensitive resin composition does not comprise a monovalent onium cation other than an onium cation represented by formulas (X-1), (X-3), (X-4), or (X-5).

Provided is a composition for refrigerators, which is a mixture of a refrigerant mixture containing carbon dioxide and a refrigerant oil having a low global warming potential value, and which has excellent thermal stability, and which contains the refrigerant mixture and the refrigerant oil containing a base oil, the mixed refrigerant contains a fluorinated hydrocarbon compound and carbon dioxide, the content of the fluorinated hydrocarbon compound is less than 25 mass% based on the total amount of the mixed refrigerant, and the base oil contains at least one selected from the group consisting of polyvinyl ethers and polyalkylene glycols.

A fluorine-containing copolymer composition comprising a fluorine-containing copolymer, a compound (A) having a fluorine atom-containing biphenyl backbone and two or more vinyl groups, a compound (B) represented by the following formula (1), and a crosslinker, wherein a mass ratio of the compound (A) to the compound (B) (the compound (A) / the compound (B)) is 1.5 or less:wherein in the formula (1), R21 and R22 are each independently —CH2— or —CF2—, and Rf21 represents a divalent C1-10 fluorohydrocarbon group or the fluorohydrocarbon group having an etheric oxygen atom at an end thereof or in a carbon-carbon bond thereof.

A refrigerator oil composition used in a refrigerant containing one or more unsaturated fluorinated hydrocarbon compounds selected from compounds represented by the following general formula (1): CxFyHz (1), wherein x is an integer of 2 to 6, y is an integer of 1 to 11, z is an integer of 1 to 11, and there are one or more carbon-carbon unsaturated bonds in the molecule, the refrigerator oil composition containing a base oil (A) that includes polyvinyl ether, a modified silicone compound (B), and a specific epoxy compound (C).