摘要:
A polyfluoroalkyl ester of unsaturated carboxylic acid is produced in high yield in a more simple reactor and with much more reduction in the waste than the conventional process based on esterification reaction by subjecting a polyfluoroalkanol represented by the following general formula: Rf—R—OH where Rf is a polyfluoroalkyl group having 1–6 carbon atoms and R is an alkylene group having 1–6 carbon atoms, and an unsaturated carboxylic acid to dehydration reaction in a fluorine-containing solvent in the presence of an acid catalyst and a polymerization inhibitor.
摘要:
An iodine-containing fluoropolyether represented by the following general formula [I]: RfO[CF(CF3)CF2O]mCF(CF3)(CH2)nI [I] (where Rf is a perfluoroalkyl group having 1-3 carbon atoms, m is an integer of 0-10, and n is an integer of 3-12), is a novel compound having a perfluoropolyetheralkyl group capable of giving a flexibility to the molecule chain through the etheral bond, said perfluoropolyether alkyl group being bonded to the alkyl iodide having an alkyl group having 3 or more carbon atoms, and can be produced by reaction of a fluoropolyether group-containing alcohol represented by the following general formula [II]: RfO[CF(CF3)CF2O]mCF(CF3)(CH2)nOH [II] (Where Rf, m, and n have the same meanings as defined above) with a metal iodide, preferably potassium iodide.
摘要翻译:由以下通式[I]表示的含碘含氟聚醚:RfO [CF(CF 3)CF 2 O] m CF(CF 3)(CH 2)n I [I](其中Rf是具有1-3个碳原子的全氟烷基,m是 是0〜10的整数,n为3〜12的整数)是具有通过醚键赋予分子链柔性的全氟聚醚烷基的新化合物,所述全氟聚醚烷基与烷基碘键合 具有3个以上碳原子的烷基,可以通过由以下通式[II]表示的含氟聚醚基团的醇反应来制造:RfO [CF(CF 3)CF 2 O] m CF(CF 3)(CH 2)n OH [II](其中Rf,m和n具有与上述相同的含义)与金属碘化物,优选碘化钾。
摘要:
A fluorine-containing copolymer, which comprises a hydroxyl-terminated fluorine-containing vinyl ether, represented by the following general formula: CF2═CFORfCH2OH (where Rf is a fluoroalkylene group, a fluoroalkyl ether group, or a fluoroalkoxyfluoroalkyl ether group, having 1-25 carbon atoms), and at least one of other fluorine-containing unsaturated monomers, where a high-molecular weight fluorine-containing copolymer having a melt viscosity (230° C.) of 0.1-100 g/10 min. is insoluble in a solvent, and can be used suitably for melt molding, whereas a low-molecular weight fluorine-containing copolymer having a glass transition temperature Tg of 20° C., or higher, and a number average molecular weight Mn of 1,000, or more is soluble in a solvent, and can be used suitably for coating agents, etc. The fluorine-containing copolymer has a high light transmissivity, and a low refractive index, and also has, as such, a good adhesiveness to various substrated without any surface treatment, any adhesives, or the like.
摘要:
Disclosed is a diurethane compound R2(SO2)m(CH2)nOCONH—R1—NHCOO(CH2)n(SO2)mR2 produced by a method allowing a diamine compound H2NR1NH2 to react with a chloroformate compound ClCOO(CH2)n(SO2)mR2 or a method allowing a diisocyanate compound OCNR1NCO to react with a hydroxyl-containing compound R2(SO2)m(CH2)nOH. The diurethane compound is compounded with multivalent amine crosslinkable group-containing acrylic rubber together with a basic vulcanization accelerator to form an acrylic rubber composition. The acrylic rubber composition including the diurethane compound as a vulcanizing agent decreases a delay in the vulcanization rate due to prevention of scorching and also allows a vulcanized article to satisfy the compression set characteristics.
摘要:
A fluorine-containing polyether carboxylic acid amide represented by the general formula: CnF2n+1O(C3F6O)mRfCONHAr, wherein Rf is a fluorocarbon group having 1 to 2 carbon atoms, Ar is a nitrogen-containing heterocyclic group, n is an integer of 1 to 3, and m is an integer of 10 to 30, is produced by reacting a fluorine-containing polyether carboxylic acid fluoride represented by the general formula: CnF2n+1(C3F6O)mRfCOF, wherein Rf, n, and m are as defined above, with a nitrogen-containing heterocyclic amine compound represented by the general formula: ArNH2, wherein Ar is as defined above; wherein the reaction is carried out while a reaction temperature is first increased to 80 to 100° C., and then increased at a temperature increase rate that produces a temperature difference of 3 to 5° C. after 48 hours.
摘要翻译:由通式C n F 2n + 1 O(C 3 F 6 O)m R f CONHAr表示的含氟聚醚羧酸酰胺,其中,Rf是碳原子数1〜2的氟烃基,Ar是含氮杂环基,n是1的整数 至3,m为10〜30的整数,通过使由通式C n F 2n + 1(C 3 F 6 O)m R f COF表示的含氟聚醚羧酸氟化物,其中Rf,n和m如上定义而制备 与由以下通式表示的含氮杂环胺化合物:ArNH 2,其中Ar如上所定义; 其中反应在反应温度首先升高至80〜100℃的同时进行,然后以48小时后产生3〜5℃的温度差的升温速度升高。
摘要:
A fluorine-containing elastomer having a copolymer composition, which comprises (a) 50-85 mol. % of vinylidene fluoride, (b) 0-25 mol. % of tetrafluoroethylene, (c) 7-20 mol. % of perfluoro(methyl vinyl ether), (d) 2.5-15 mol. % of CF2═CFO[CF2CF(CF3)O]nCF3 (n: 2-6), (e) 0.1-2 mol. % of CF2═CFO[CF2CF(CF3)O]mCF2CF3 (m: 2-6), and (f) 0.1-2 mol. % of RfX (Rf: an unsaturated fluorohydrocarbon group having 2-8 carbon atoms, which can contain at least one ether bond, X: bromine or iodine), can provide a fluorine-containing elastomer composition, which comprises 100 parts by weight of the fluorine-containing elastomer, 0.1-10 parts by weight of an organic peroxide, 0.1-10 parts by weight of a polyfunctional unsaturated compound, and at least 2 parts by weight of an acid acceptor. The composition can give vulcanizates having a distinguished elongation at break at high temperatures such as 100° C., and distinguished compression set characteristics at low temperatures such as 0° C.
摘要:
A fluorine-containing elastomer having a copolymer composition, which comprises (a) 50-85 mol. % of vinylidene fluoride, (b) 0-25 mol. % of tetrafluoroethylene, (c) 7-20 mol. % of perfluoro(methyl vinyl ether), (d) 2.5-15 mol. % of CF2═CFO[CF2CF(CF3)O]nCF3 (n: 2-6), (e) 0.1-2 mol. % of CF2═CFO[CF2CF(CF3)O]mCF2CF3 (m: 2-6), and (f) 0.1-2 mol. % of RfX (Rf: an unsaturated fluorohydrocarbon group having 2-8 carbon atoms, which can contain at least one ether bond, X: bromine or iodine), can provide a fluorine-containing elastomer composition, which comprises 100 parts by weight of the fluorine-containing elastomer, 0.1-10 parts by weight of an organic peroxide, 0.1-10 parts by weight of a polyfunctional unsaturated compound, and at least 2 parts by weight of an acid acceptor. The composition can give vulcanizates having a distinguished elongation at break at high temperatures such as 100° C., and distinguished compression set characteristics at low temperatures such as 0° C.
摘要:
A fluorine-containing vinyl ether compound of the formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cOCH═CH2 is produced by subjecting a fluorine-containing alcohol of the formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cOH wherein n is an integer of 1 to 6, a is an integer of 1 to 4, b is an integer of 1 to 3, and c is an integer of 1 to 3, and 2-haloethyl vinyl ether of the formula: XCH2CH2OCH═CH2 to XCH2CH2OH-elimination reaction in the presence of a palladium-based catalyst and an aliphatic amine. The fluorine-containing vinyl ether compound contain a perfluoroalkyl group having 6 or less carbon atoms, which is said to have low bioaccumulation potential.
摘要:
A fluorine-containing vinyl ether compound of the formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cOCH═CH2 is produced by subjecting a fluorine-containing alcohol of the formula: CnF2n+1(CH2CF2)a(CF2CF2)b(CH2CH2)cOH wherein n is an integer of 1 to 6, a is an integer of 1 to 4, b is an integer of 1 to 3, and c is an integer of 1 to 3, and 2-haloethyl vinyl ether of the formula: XCH2CH2OCH═CH2 to XCH2CH2OH-elimination reaction in the presence of a palladium-based catalyst and an aliphatic amine. The fluorine-containing vinyl ether compound contain a perfluoroalkyl group having 6 or less carbon atoms, which is said to have low bioaccumulation potential.
摘要:
A fluorine-containing polyether carboxylic acid amide represented by the general formula: CnF2n+1O(C3F6O)mRfCONHAr, wherein Rf is a fluorocarbon group having 1 to 2 carbon atoms, Ar is a nitrogen-containing heterocyclic group, n is an integer of 1 to 3, and m is an integer of 10 to 30, is produced by reacting a fluorine-containing polyether carboxylic acid fluoride represented by the general formula: CnF2n+1(C3F6O)mRfCOF, wherein Rf, n, and m are as defined above, with a nitrogen-containing heterocyclic amine compound represented by the general formula: ArNH2, wherein Ar is as defined above; wherein the reaction is carried out while a reaction temperature is first increased to 80 to 100° C., and then increased at a temperature increase rate that produces a temperature difference of 3 to 5° C. after 48 hours.
摘要翻译:由通式C n F 2n + 1 O(C 3 F 6 O)m R f CONHAr表示的含氟聚醚羧酸酰胺,其中,Rf是碳原子数1〜2的氟烃基,Ar是含氮杂环基,n是1的整数 至3,m为10〜30的整数,通过使由通式C n F 2n + 1(C 3 F 6 O)m R f COF表示的含氟聚醚羧酸氟化物,其中Rf,n和m如上定义而制备 与由以下通式表示的含氮杂环胺化合物:ArNH 2,其中Ar如上所定义; 其中反应在反应温度首先升高至80〜100℃的同时进行,然后以48小时后产生3〜5℃的温度差的升温速度升高。