Fluorinated oligourethanes
    1.
    发明授权
    Fluorinated oligourethanes 失效
    氟化低聚氨酯

    公开(公告)号:US07323435B1

    公开(公告)日:2008-01-29

    申请号:US09592254

    申请日:2000-06-12

    摘要: Fluorinated oligourethanes, having number average molecular weight lower than or equal to 9,000, having a branched structure, formed of the following monomers and macromers: a) aliphatic, cycloaliphatic or aromatic polyisocyanates, b) heterofunctional hydrogenated monomers having general formula: X0—(CR1AR2A)b—Y0   (Ib) one or more of the following compounds: c) bifunctional hydroxyl (per)fluoropolyethers (PFPE diols) having number average molecular weight in the range 400-3,000, e) monofunctional hydroxyl (per)fluoropolyethers or monofunctional hydroxyl (per)fluoroalkanes (e′), having number average molecular weight in the range 300-1,000, and optionally the following compounds: d) heterofunctional monomers, dI) hydrogen-active compounds, capable to form bonds with the NCO functions stable at the hydrolysis but weak at heat.

    摘要翻译: 数均分子量低于或等于9,000的氟化低聚氨酯具有分支结构,由以下单体和大分子单体形成:a)脂族,脂环族或芳族多异氰酸酯,b)具有以下通式的异型官能氢化单体: line-formula description =“In-line Formulas”end =“lead”?> X - (CR <1>

    Fluorine-containing compounds having polyacetalic structure, and process
for preparing them
    5.
    发明授权
    Fluorine-containing compounds having polyacetalic structure, and process for preparing them 失效
    具有聚缩醛结构的含氟化合物及其制备方法

    公开(公告)号:US5637671A

    公开(公告)日:1997-06-10

    申请号:US542443

    申请日:1995-10-12

    摘要: 1) Disclosed herein are new fluorine-containing compounds having polyacetalic structure, of general formula:[Rf.sub.m --CH.sub.2 O(CH.sub.2 O).sub.c --CH.sub.2 --.brket close-st..sub.n (I)where:Rf=a perfluorooxyalkylene chain having Mn from 500 to 5,000;m=4-25;c=1-10;n=2-100.2) A process for preparing them which comprises carrying out the polycondensation of diols having formula:HORfOH (II)with formaldehyde, in mass or in the presence of solvents, in an acid medium. The compounds of formula (I) can be oligomeric compounds (polymerization degree x.sub.n from 2 to about 20) or polymeric compounds (x.sub.n from about 20 to about 100). They exhibit a high stability to heat and to chemical agents, and Tg values slightly different from the ones of the diols utilized for preparing them.

    摘要翻译: 1)本文公开了具有以下通式的具有聚缩醛结构的新的含氟化合物:[Rfm-CH2O(CH2O)c-CH2- + 548n(I))其中:Rf =具有+ E的全氟氧化烯链,ovs M + EE n从500到5,000; m = 4-25; c = 1-10; n = 2-100。 2)一种制备它们的方法,其包括在酸性介质中,以质量或在溶剂存在下,将具有式:HORFOH(II)的二醇与甲醛缩聚。 式(I)化合物可以是低聚化合物(聚合度+ E,ovs x + EE n从2至约20)或聚合化合物(+ E,ovs x + EE n约20至约100)。 它们对热和化学试剂表现出高稳定性,并且Tg值与用于制备它们的二醇的那些略有不同。

    Fluorine-containing compounds having polyacetalic structure, and process
for preparing them
    6.
    发明授权
    Fluorine-containing compounds having polyacetalic structure, and process for preparing them 失效
    具有聚缩醛结构的含氟化合物及其制备方法

    公开(公告)号:US5476918A

    公开(公告)日:1995-12-19

    申请号:US58014

    申请日:1993-05-05

    摘要: 1) New fluorine-containing compounds having polyacetalic structure, of general formula:(I)[Rf.sub.m --CH.sub.2 O(CH.sub.2 O).sub.c --CH.sub.2 ].sub.nwhere:Rf=a perfluorooxyalkylene chain having Mn from 500 to 5,000;m=4-25;c=1-10;n=2-100.2) A process for preparing them, which comprises carrying out the polycondensation of diols having formula:(II) HORfOHwith formaldehyde, in mass or in the presence of solvents, in an acid medium. The compounds of formula (I) can be oligomeric compounds (polymerization degree x.sub.n from 2 to about 20) or polymeric compounds (x.sub.n from about 20 to about 100). They exhibit a high stability to heat and to chemical agents, and Tg values slightly different from the ones of the diols utilized for preparing them.

    摘要翻译: 1)具有通式:(I)[Rfm-CH 2 O(CH 2 O)c -CH 2] n]的具有聚缩醛结构的新的含氟化合物,其中:Rf =具有500-5,000的&lt;上升&Mn的全氟氧化烯链; m = 4〜25; c = 1-10; n = 2-100。 2)一种制备它们的方法,其包括在酸性介质中以质量或在溶剂存在下,使式(II)HORFOH与甲醛进行缩聚反应。 式(I)的化合物可以是低聚化合物(聚合度和上限,从2到约20)或聚合化合物(和从约20到约100)。 它们对热和化学试剂表现出高稳定性,并且Tg值与用于制备它们的二醇的那些略有不同。

    Thermoplastic polyesters containing perfluoropolyoxyalkylene sequence
    7.
    发明授权
    Thermoplastic polyesters containing perfluoropolyoxyalkylene sequence 失效
    含全氟聚氧化烯序列的热塑性聚酯

    公开(公告)号:US5476910A

    公开(公告)日:1995-12-19

    申请号:US228564

    申请日:1994-04-15

    CPC分类号: C08G63/6826 C08G63/672

    摘要: Fluorinated thermoplastic elastomers having a block structure:--[--R.sub.f --H.sub.1 --H.sub.2 --H.sub.1 --]--where --R.sub.f -- is a perfluoropolyoxyalkylene sequence of formula:--CF.sub.2 O--(CF.sub.2 CF.sub.2 O).sub.m --(CF.sub.2 O).sub.n --CF.sub.2 --with m/n=0.2.div.5, H.sub.1 and H.sub.2, equal or different from each other, are bivalent radicals having arylene, alkylarylene, alkylene or cycloalkylene structure, optionally containing fluorine and/or other heteroatoms selected among oxygen, sulphur, nitrogen. Such products are obtainable by utilizing a perfluoropolyoxyalkylene diol having a functionality at least equal to 1.97, preferably at least equal to 1.99, and are characterized by a tensile strength at 23.degree. C. at least 50% higher than that of the corresponding polyesters obtained starting from perfluoropolyoxyalkylene diols having a functionality not higher than 1.96.

    摘要翻译: 具有嵌段结构的氟化热塑性弹性体:其中-Rf-是式-CF 2 O-(CF 2 CF 2 O)m - (CF 2 O)n -CF 2的全氟聚氧化烯序列,其中m- n = 0.2分解5,彼此相同或不同的H1和H2是具有亚芳基,烷基亚芳基,亚烷基或亚环烷基结构的二价基团,任选地含有选自氧,硫,氮中的氟和/或其它杂原子。 这样的产物可通过使用具有至少等于1.97,优选至少等于1.99的官能度的全氟聚氧亚烷基二醇获得,其特征在于在23℃下的拉伸强度比起始地获得的相应聚酯的拉伸强度高至少50% 来自具有不高于1.96的官能度的全氟聚氧亚烷基二醇。