摘要:
A process for producing chlorofluorobenzenes, which comprises reacting fluorine-containing nitrobenzenes of the following formula (1) with chlorine gas to obtain chlorofluorobenzenes of the following formula (2): ##STR1## wherein n and m are integers satisfying 1.ltoreq.n.ltoreq.3, 0.ltoreq.m.ltoreq.2 and 1.ltoreq.n+m.ltoreq.3.
摘要翻译:(1)的含氟硝基苯与氯气反应得到下式(2)的氯氟苯:其中n和m 是满足1≤n≤3,0≤m≤2和1≤n+ m <3的整数。
摘要:
A process for producing chlorofluorobenzenes, which comprises reacting fluorine-containing nitrobenzenes of the following formula (1) with chlorine gas to obtain chlorofluorobenzenes of the following formula (2): ##STR1## wherein n and m are integers satisfying 1.ltoreq.n.ltoreq.3, 0.ltoreq.m.ltoreq.2 and 1.ltoreq.n+m.ltoreq.3.
摘要翻译:(1)的含氟硝基苯与氯气反应得到下式(2)的氯氟苯:其中n和m 是满足1≤n≤3,0≤m≤2和1≤n+ m <3的整数。
摘要:
A method for brominating a perfluoroalkyl iodide or a perfluoroalkylene diiodide, which comprises reacting a perfluoroalkyl iodide or a perfluoroalkylene diiodide with a brominating agent in a gas phase to obtain a perfluoroalkyl bromide or a perfluoroalkylene dibromide.
摘要:
A polyfluorohydrocarbon group-containing acrylate of the formula (1):R.sub.f --(CH.sub.2).sub.n --Q--(CH.sub.2).sub.h --.phi.--[X--.phi.--].sub.y --(CH.sub.2).sub.m OC(O)CR.dbd.CH.sub.2(1)wherein R.sub.f is a polyfluorohydrocarbon group having from 2 to 22 carbon atoms to which fluorine atoms are bonded, wherein some of such carbon atoms may be substituted by ether-type oxygen atoms,.phi. is a p-phenylene group which may be substituted by one or more halogen atoms selected from fluorine and chlorine, provided that when a plurality of .phi. are present in one molecule, such a plurality of .phi. may be the same or different from one another,R is a hydrogen atom, a methyl group, a fluorine atom, a chlorine atom or a bromine atom,Q is an oxygen atom or a sulfur atom,X is a single bond, --CH.dbd.CH--, --N.dbd.CH--, --CH.dbd.N-- or --C(O)--,n is an integer of from 1 to 22,h is an integer of from 0 to 22,m is an integer of from 1 to 11, andy is an integer of from 0 to 5.
摘要:
A stainproofing oil for a heat fixing roller, which consists essentially of a fluorosilicone compound having a silicon atom to which a monovalent fluorine-containing group selected from the formulae (1) to (3) is bonded:R.sub.f.sup.1 --X.sup.1 -- (1)R.sub.f.sup.2 --X.sup.2 --O--X.sup.3 -- (2)R.sub.f.sup.3 --X.sup.4 --O--X.sup.5 -- (3)wherein R.sub.f.sup.1 is a monovalent polyfluorohydrocarbon group, R.sub.f.sup.2 is a monovalent polyfluoroalkyl group containing an ether oxygen atom, R.sub.f.sup.3 is a monovalent polyfluorohydrocarbon group, and each of X.sup.1 to X.sup.5 independently is a bivalent hydrocarbon group.
摘要:
Methacrylic acid is prepared by reacting methacrolein with molecular oxygen in the vapor phase at a temperature of from 230.degree. C. to 450.degree. C. in the presence of a catalyst having the formula Mo.sub.12 P.sub..alpha.' X.sub..beta.' Y.sub..gamma.' O.sub..delta.' wherein X is at least one member of the group consisting of Cs and Tl:Y is at least one member of the group consisting of Cs and Tl; Y is at least one member of the group consisting of V, Zr, Nb, Ni, Ta and Fe; .alpha.'=0.1-3; .beta.'=0.2-9; .gamma.'=0.1-7; .delta.'=36-100.
摘要:
A process for recovering fluoropolymers, which comprises contacting an ion exchange membrane comprising a fluoropolymer having carboxylic acid groups (hereinafter referred to as a C-polymer) and a fluoropolymer having sulfonic acid groups (hereinafter referred to as a S-polymer) and having inorganic particles deposited on the surface, with a solvent to let it swell and to remove the inorganic particles from the surface, then, contacting it with a solvent which is a good solvent for the S-polymer and a poor solvent for the C-polymer to obtain a solid composed mainly of the C-polymer and a solution having the S-polymer dissolved therein, and recovering them by solid-liquid separation.
摘要:
A process for recovering fluoropolymers, which comprises contacting an ion exchange membrane comprising a fluoropolymer having carboxylic acid groups (hereinafter referred to as a C-polymer) and a fluoropolymer having sulfonic acid groups (hereinafter referred to as a S-polymer) and having inorganic particles deposited on the surface, with a solvent which is a good solvent for the C-polymer and a good solvent for the S-polymer, to separate a solution having the C-polymer and the S-polymer dissolved therein, and the inorganic particles, then esterifying the C-polymer in the solution to form precipitate of an ester of the C-polymer, and fractionating and recovering the precipitate and a solution having the S-polymer dissolved therein by solid-liquid separation.
摘要:
Oligomeric fluoroalkylsiloxanes corresponding to the formula: ##STR1## wherein x is 0 to 3, y is 0, 1, or 2; z is 0 or 1; x+y>0, and R has the formula --C.sub.a H.sub.2a --O.sub.b --C.sub.d H.sub.2c --C.sub.d F.sub.2d+1 in which a is 2-4, b is 0 or 1, c is 0-8 and d is 4-12, and compositions thereof with an oil, are useful as spreading agents and in agricultural applications.
摘要翻译:对应于下式的低聚氟代烷基硅氧烷:其中x为0至3,y为0,1或2; z为0或1; x + y> 0,R具有式-CaH2a-Ob-CdH2c-CdF2d + 1,其中a为2-4,b为0或1,c为0-8且d为4-12,其组成为 有油,可用作扩散剂和农业应用。
摘要:
A process for producing a 5-fluorobenzoic acid of the formula (V), which comprises trichloromethylating a fluorobenzene of the formula (I) to obtain a 5-fluorobenzotrichloride of the formula (II), then reacting it with aqueous ammonia to obtain a 5-fluorobenzonitrile of the formula (III), reacting it with a fluorinating agent to obtain a 5-fluorobenzonitrile of the formula (IV) and hydrolyzing it: ##STR1## wherein each of X.sub.1, X.sub.3, Y.sub.1 and Y.sub.3 is a halogen atom, and each of X.sub.2 and Y.sub.2 is hydrogen or a halogen atom.