摘要:
A fluoropolymer of a monomer (I) represented by the general formula (I), wherein a content of a polymerization unit (I) derived from the monomer (I) is 50% by mass or more based on all polymerization units constituting the fluoropolymer:
CX2═CX—O—Rf—SO3M General formula (I)
wherein X is independently F or CF3; Rf is a fluorine-containing alkylene group having 1 to 40 carbon atoms or a fluorine-containing alkylene group having 2 to 100 carbon atoms and having an ether bond or a keto group; and M is —H, a metal atom, —NR74, imidazolium optionally having a substituent, pyridinium optionally having a substituent, or phosphonium optionally having a substituent, wherein R7 is H or an organic group. Also disclosed are an aqueous solution and coating composition containing the fluoropolymer.
摘要:
Described herein is method of making branched perfluorinated compounds, specifically (CF3)2CFCF(CF3)OCF(CF3)C(═O)F and (CF3)2CFCF(CF3)OCF═CF2. Also disclosed herein is a fluoropolymer derived from the branched perfluorovinyl ether monomer and methods of making the fluoropolymer.
摘要:
To provide a liquid composition whereby a resin powder can be uniformly dispersed in a resin or the like without being scattered, and a method for producing a film, a laminate or the like by using the liquid composition. The liquid composition comprises a liquid medium and a resin powder dispersed in the liquid medium, and characterized in that the average particle size of the resin powder is from 0.3 to 6 μm, the volume-based cumulative 90% diameter of the resin powder is at most 8 μm, and the resin powder is a resin containing a fluorinated copolymer having a specific functional group. And, the method is a method for producing a film, a laminate or the like by using the liquid composition.
摘要:
A hydrofluoroolefin compound represented by the following general formula (I): where, Rh is CH═CH2 or C(CH3)═CH2; and (i) x is O; n is 1; Y is F; Rf2 is F; and Rf1 is a linear or branched fluorinated alkyl group having 1-10 carbon atoms and optionally includes one or more catenated heteroatoms selected from O, N, and S; or ({umlaut over (υ)}) x is N, n is 2, Y is F or CF3; Rf2 is F or CF3; and (a) each Rf1 is bonded to x, and is independently a linear or branched fluorinated alkyl group having 1-8 carbon atoms and optionally includes one or more catenated heteroatom selected from O, N or S; or (e) the Rf1 groups are bonded together to form a ring structure having 4 to 8 carbon atoms that optionally includes one or more catenated heteroatoms selected from O, N, or S; with the proviso that when Y═CF3, then Rf2═F.
摘要:
Provided is an insulated electrical wire having an insulating layer containing a fluororesin, wherein the flexibility is improved while maintaining the heat resistance of the fluororesin. The insulated electrical wire comprises a conductor and an insulating layer covering the periphery of the conductor, the insulating layer containing a fluorine-containing polymer comprising a polymer of a monomer containing one or two or more fluorine-containing monomers represented by the following formula (1): CH2═CH—Rf1 (1) wherein Rf1 is a perfluoroalkyl group, and Rf1 may contain one or more ether bonds.
摘要:
A composition containing a novel vinyl-group-containing compound. This composition contains a vinyl-group-containing compound represented by general formula (1). In the formula: W1 and W2 represent a group represented by general formula (2) (where a ring (Z) is an aromatic hydrocarbon ring, X is a single bond or —S—, R1 is a single bond or a C1-4 alkylene group, R2 is a specific substituent group such as a monovalent hydrocarbon, and m is an integer equal to 0 or higher), a group represented by general formula (4) (where the ring (Z), X, R1, R2, and m are as previously stated), a hydroxyl group, or a (meth)acryloyloxy group; rings (Y1, Y2) are aromatic hydrocarbon rings; R represents a single bond or a specific divalent group; R3a and R3b represent a cyano group, a halogen atom, or a monovalent hydrocarbon group; and n1 and n2 are integers of 0-4.
摘要:
Provided is a polar compound that has high chemical stability and high capability of aligning liquid crystal molecules, and has a large voltage holding ratio when used in a liquid crystal display device.The compound represented by formula (1) is applied. For example, R1 is alkyl having 1 to 15 carbons; rings A1 to A5 are 1,4-cyclohexylene or 1,4-phenylene; Z1 and Z5 are a single bond or alkylene having 1 to 10 carbons; a and b are 0 to 4, and a sum of a and b is 4 or less; d is 1 to 4; c and e are 0 to 4; P1 to P3 are a polymerizable group represented by formulas (P-1) to (P-5): in which M1 to M3 are hydrogen or alkyl having 1 to 5 carbons; and R2 is a group represented by formulas (1a) to (1c): in which Sp1 to Sp5 are a single bond or alkylene having 1 to 10 carbons; S1 is >CH—; S2 is >C
摘要:
A surface-treating agent comprises a fluoropolymer comprising (A) repeating units derived from a fluorine-containing monomer of the formula: (B) repeating units derived from a monomer free from a fluorine atom. The surface treating agent is excellent in water repellency, oil repellency and unsusceptibility to fouling even when the side chains are C4 or lower fluoroalkyl groups.
摘要:
To provide an electrolyte polymer for polymer electrolyte fuel cells, made of a perfluorinated polymer having sulfonic groups, characterized in that in a test of immersing 0.1 g of the polymer in 50 g of a fenton reagent solution containing 3% of an aqueous hydrogen peroxide solution and 200 ppm of bivalent iron ions at 40° C. for 16 hours, the amount of eluted fluorine ions detected in the solution is not more than 0.002% of the total amount of fluorine in the polymer immersed. The electrolyte polymer of the present invention has very few unstable terminal groups and has an excellent durability, and therefore, is suitable as a polymer constituting an electrolyte membrane for polymer electrolyte fuel cells and a polymer contained in a catalyst layer.