Process for producing salts of fluorinated alcohols
申请人:AUSIMONT S.p.A.
公开号:EP0483850A2
公开(公告)日:1992-05-06
Process for preparing alkali-metal or ammonium salts of fluorinated tertiary alcohols
RxR'y(CnF2n+1)kC-OM
wherein R and R', which may be either equal to, or different from, each other, represent a perhalocarbyl group, the halogen atoms of which are constituted by F and Cl and/or Br, a hydrogenated halocarbyl group, the halogen atoms of which are constituted by F and Cl and/or Br; n is comprised within the range of from 1 to 6; M is an alkali metal or an ammonium ion x and/or y are 0 or 1; and k is 1, 2 or 3, with the proviso that x+y+k = 3 , by means of the reaction of a carbonyl compound
R''-CO-R''',
in which R'' and/or R''' = R and/or R' or F, with a tri(alkyl)silaneperfluoroalkyl compound [(C₁-C₄)-alkyl]₃-Si-CnF2n+1 and with a fluoride MF, in an aprotic solvent, at a temperature comprised within the range of from -45°C to +120°C; from said salts, the corresponding alcohols can be obtained by acidic hydrolysis. Some of the obtained products are per se novel.
制备氟化叔醇的碱金属盐或铵盐的工艺
RxR'y(CnF2n+1)kC-OM
其中 R 和 R'可以相互等同或不同,代表全卤代羰基,其卤原子由 F 和 Cl 和/或 Br 构成;氢化卤代羰基,其卤原子由 F 和 Cl 和/或 Br 构成;x 和/或 y 是 0 或 1;以及 k 是 1、2 或 3,但 x+y+k = 3,通过羰基化合物的反应生成
R''-CO-R''''、
其中 R'' 和/或 R''' = R 和/或 R' 或 F,与三(烷基)硅烷-全氟烷基化合物 [(C₁-C₄)-烷基]₃-Si-CnF2n+1,以及氟化物 MF,在钝溶剂中,温度范围为 -45°C 至 +120°C;从上述盐类中,可通过酸性水解得到相应的醇。所得到的一些产品本身就是新颖的。
Shaped articles of graduated refractive index exhibiting low dispersion
申请人:HOECHST CELANESE CORPORATION
公开号:EP0606598A2
公开(公告)日:1994-07-20
A monolithic, thermoplastic article with a continuously graded refractive index is formed by polymerizing a fluorinated matrix polymer in the presence of a low molecular weight, substantially unreactive guest molecule of different refractive index than the matrix polymer. The thermoplastic articles may be used to produce shaped articles such as optical waveguides, fibers or lenses of low attenuation and high bandwidth.
[EN] TRANSPARENT THERMOPLASTIC MOULDING MATERIAL AND ITS USE
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:WO1990012043A1
公开(公告)日:1990-10-18
(DE) Eine transparente thermoplastische Formmasse bestehend zu 40 bis 90 Gew.-% aus Einheiten, die sich vom Tetrafluorethylen ableiten, und zu 60 bis 10 Gew.-% aus Einheiten, die sich von Verbindungen der Formel (I): CF2 = CF - O - (CF2-CF(CF3)-O)m - (CF2)n - CF3 oder (II): CF2 = CF - O - (CF2-CF(CF3)-O)p - (CF2)q - COO - R ableiten, ist insbesondere zur Herstellung des Mantels von Lichtwellenleitern geeignet, deren Kern eine höhere Transparenz als Poly(methylmethacrylat) besitzt.(EN) A transparent thermoplastic moulding material consisting of 40 to 90 wt. % of units derived from tetrafluorethylene and 60 to 10 wt. % of units derived from compounds of formula (I): CF2 = CF - O - (CF2-CF(CF3)-O)m - (CF2)n - CF3 or (II): CF2 = CF - O (CF2-CF(CF3)-O)p - (CF2)q - COO - R, is particularly suitable for manufacturing the sheaths of beam waveguides the core of which possesses a higher transparency than poly(methyl methacrylate).(FR) Une matière de moulage thermoplastique transparente composée de 40 à 90 % en poids d'unités dérivées de tétrafluoréthylène, et de 60 à 10 % en poids d'unités dérivées de composés de formule (I): CF2 = CF - O - (CF2-CF(CF3)-O)m - (CF2)n - CF3 ou (II): CF2 = CF - O - (CF2-CF(CF3)-O)p - (CF2)q - COO - R, convient particulièrement pour fabriquer les gaines de guides d'ondes lumineuses dont le noyau possède une transparence supérieure au poly(méthacrylate de méthyle).
(中)一种透明的热塑性成型材料,由40%至90%重量百分数的来自四氟乙稀ylene的单体单元和60%至10%重量百分数的来自结构式(I)或(II)的单体单元组成。其中,结构式(I)为:CF2 = CF - O - (CF2-CF(CF3)-O)m - (CF2)n - CF3;结构式(II)为:CF2 = CF - O - (CF2-CF(CF3)-O)p - (CF2)q - COO - R。这种材料特别适合用于制造光波导管的内壳,其核心部分具有高于聚甲基丙烯酸甲酯的更高透明度。
(法) opaque thermoplastic moldable material, made up of 40 to 90 weight percent units derived from tetrafluorethylene and 60 to 10 weight percent units derived from (I) or (II) type compounds: (I) CF2 = CF - O - (CF2-CF(CF3)-O)m - (CF2)n - CF3 or (II) CF2 = CF - O - (CF2-CF(CF3)-O)p - (CF2)q - COO - R, is particularly suitable for the production of the sheaths of beam waveguide whose core has higher transparency than poly(methyl methacrylate).
[EN] TRANSPARENT THERMOPLASTIC MOULDING MATERIAL CONSISTING OF ESTERS OF 2,3-DIFLUORACRYLIC ACID
申请人:HOECHST AKTIENGESELLSCHAFT
公开号:WO1990012040A1
公开(公告)日:1990-10-18
(DE) Eine thermoplastische Formmasse, die aus Einheiten von 2,3-Difluoracrylsäureestern oder ihren deuterierten Derivaten besteht oder Einheiten aus diesen Estern enthält, zeichnet sich durch eine hohe Glasübergangstemperatur und eine hohe Lichtdurchlässigkeit aus. Sie eignet sich deswegen für die Herstellung von Lichtwellenleitern für große Übertragungslängen und hohe Dauergebrauchstemperaturen.(EN) A transparent thermoplastic moulding material consisting of units of esters of 2,3-difluoracrylic acid or their deuterized derivatives is characterized by a high glass transition temperature and high transparency. It is therefore suitable for the manufacture of beam waveguides for use over high transmission lengths and at high continuous service temperatures.(FR) Une matière de moulage thermoplastique transparente composée d'unités d'acrylates de 2,3-difluor ou de leurs dérivés deutérisés est caractérisée par une température de transition vitreuse élevée et une transparence exceptionnelle. Elle convient donc particulièrement à la fabrication de guides d'ondes lumineuses s'utilisant sur de grandes longueurs de transmission et à des températures élevées en service continu.