摘要:
A method for producing a hydrofluorocarbon of the formula a H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with an alkali metal hydroxide under action of an alcohol mixture comprising a primary alcohol and a secondary alcohol.
摘要:
A method for producing a hydrofluorocarbon of the formula H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with a reducing agent in a gas phase.
摘要翻译:一种制备式H n R f H的氢氟烃的方法,其中n为0或1,当n为0时,Rf为C2-12直链或支链多氟烷基,当n为1时,Rf为C2-12直链或支链 包括将其中n和Rf如上定义的式InRfI的氟碘化碳与气相中的还原剂反应。
摘要:
A method for producing a hydrofluorocarbon of the formula H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with hydrogen at a temperature of not higher than 450.degree. C. in a gas phase.
摘要翻译:一种制备式H n R f H的氢氟烃的方法,其中n为0或1,当n为0时,Rf为C2-12直链或支链多氟烷基,当n为1时,Rf为C2-12直链或支链 包括使其中n和Rf如上所定义的式IIFF 1的碘氟化物与氢气在不高于450℃的气相中反应。
摘要:
A method for producing a hydrofluorocarbon of the formula a H.sub.n R.sub.f H wherein n is 0 or 1, and when n is 0, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkyl group, and when n is 1, R.sub.f is a C.sub.2-12 linear or branched polyfluoroalkylene group, which comprises reacting an iodofluorocarbon of the formula I.sub.n R.sub.f I wherein n and R.sub.f are as defined above, with an alkali metal hydroxide under action of an alcohol mixture comprising a primary alcohol and a secondary alcohol.
摘要:
A production method which comprises reacting one or more feedstock compounds to form a desired compound having a boiling point higher than the feedstock compounds, wherein the reaction is carried out under reflux in a distillation column portion of a reactor provided with the distillation column.
摘要:
A method for producing a fluorine-containing silicone compound, which comprises subjecting a compound of the following formula (I) and a hydrosilicone compound having at least one hydrogen atom bonded to a silicon atom to hydrosilylation to obtain a fluorine-containing silicone compound having a R.sup.f --Q--CR.sup.1 R.sup.2 CR.sup.3 HCR.sup.4 R.sup.5 -- group bonded to the silicon atom:R.sup.f --Q--CR.sup.1 R.sup.2 CR.sup.3 .dbd.CR.sup.4 R.sup.5(I)wherein R.sup.f is a monovalent fluorine-containing organic group, Q is a single bond or a bivalent organic group containing no fluorine atom, and each of R.sup.1 to R.sup.5 which are independent of one another, is a hydrogen atom or a monovalent organic group.
摘要:
A method for preparing difluoroacetic acid fluoride, which comprises reacting a 1-alkoxy-1,1,2,2-tetrafluoroethane of the formula HCF.sub.2 CF.sub.2 OR.sup.1 wherein R.sup.1 is a C.sub.1-4 alkyl group in a gas phase in the presence of a metal oxide catalyst.
摘要翻译:一种制备二氟乙酸氟化物的方法,其包括使式HCF 2 CF 2 OR 1的1-烷氧基-1,1,2,2-四氟乙烷在气相中在金属氧化物催化剂存在下反应,其中R1是C1-4烷基 。
摘要:
A method for producing a fluorine-containing silicone compound, which comprises subjecting a compound of the following formula (I) and a hydrosilicone compound having at least one hydrogen atom bonded to a silicon atom to hydrosilylation to obtain a fluorine-containing silicone compound having a R.sup.f --Q--CR.sup.1 R.sup.2 CR.sup.3 HCR.sup.4 R.sup.5 -- group bonded to the silicon atom:R.sup.f --Q--CR.sup.1 R.sup.2 CR.sup.3 =CR.sup.4 R.sup.5 (I)wherein R.sup.f is a monovalent fluorine-containing organic group, Q is a single bond or a bivalent organic group containing no fluorine atom, and each of R.sup.1 to R.sup.5 which are independent of one another, is a hydrogen atom or a monovalent organic group.
摘要:
A method for producing a fluorine-containing silicone compound, which comprises subjecting a compound of the following formula (I) and a hydrosilicone compound having at least one hydrogen atom bonded to a silicon atom to hydrosilylation to obtain a fluorine-containing silicone compound having a R.sup.f --Q--CR.sup.1 R.sup.2 CR.sup.3 HCR.sup.4 R.sup.5 -- group bonded to the silicon atom: R.sup.f --Q--CR.sup.1 R.sup.2 CR.sup.3 .dbd.CR.sup.4 R.sup.5(I) wherein R.sup.f is a monovalent fluorine-containing organic group, Q is a single bond or a bivalent organic group containing no fluorine atom, and each of R.sup.1 to R.sup.5 which are independent of one another, is a hydrogen atom or a monovalent organic group.
摘要:
A fluorinated elastomer latex containing an aqueous medium, a fluorinated elastomer dispersed in the aqueous medium in an amount of from 10 to 60 mass % and a fluorinated emulsifier represented by the formula (1): C2F5O(CF2CF2O)mCF2COOA (wherein A is a hydrogen atom, an alkali metal or NH4, and m is an integer of from 1 to 3), which employs no perfluorooctanoate emulsifier and which is excellent in dispersion stability of the fluorinated elastomer. A fluorinated elastomer obtained by coagulating the fluorinated elastomer latex has a low content of an emulsifier, and a fluororubber molded product obtained by crosslinking the fluorinated elastomer is excellent in physical properties.
摘要翻译:含有水性介质的含氟弹性体胶乳,以10〜60质量%的量分散在水性介质中的氟化弹性体和式(1)表示的氟化乳化剂:C 2 F (CF 2 O 2 CF 2)2 CO 2(其中A 1,C 2,C 2, 是氢原子,碱金属或NH 4,m为1〜3的整数),其不使用全氟辛酸酯乳化剂,其含氟弹性体的分散稳定性优异。 通过使含氟弹性体胶乳凝固而得到的氟化弹性体的乳化剂含量低,通过使含氟弹性体交联得到的氟橡胶成型体的物性优异。