Curable polyurethanes
    6.
    发明授权
    Curable polyurethanes 失效
    可固化聚氨酯

    公开(公告)号:US07358306B2

    公开(公告)日:2008-04-15

    申请号:US10177859

    申请日:2002-06-20

    IPC分类号: C08L75/14 C08L75/08 C08G71/04

    摘要: Curable (per)fluoropolyether polyurethanes obtained by reaction in a first step of a) (per)fluoropolyether diols having a number average molecular weight from 2,000 to 5,000; with b) diisocyanates of formula OCN—R—NCO   (VIA) wherein R is a hydrogenated and/or fluorinated radical; in a second step with the compound c) saturated or unsaturated aliphatic hydrogenated diols, (alkyl)cycloaliphatic, aromatic; oligomers or polymers of butadiene with a number average molecular weight from 500 to 4,000 having end hydroxyl groups; provided that: when the diisocyanate b) is used and the radical R in formula (VIA) is: —Ph—CH2—Ph—, the hydrogenated diols c) are optional; when the radical R has a meaning different from that above mentioned, at least one of the used hydrogenated diols c) is selected from those belonging to the c2)-c6) groups; the sum of the equivalents of the compounds a) and c) being equal to the equivalents of the compound b).

    摘要翻译: 在第一步中通过在数均分子量为2,000至5,000的a)(全)氟代聚醚二醇中反应获得的可固化(全)氟聚醚聚氨酯; 其中b)式的线性公式描述=“在线公式”end =“lead”→OCN-R-NCO(VIA)<βin-line-formula description =“In-line Formulas “end =”tail“?>其中R是氢化和/或氟化基团; 在第二步中,化合物c)饱和或不饱和脂族氢化二醇,(烷基)脂环族,芳族; 数均分子量为500〜4000的具有末端羟基的丁二烯低聚物或聚合物; 条件是:当使用二异氰酸酯b)时,式(VIA)中的基团R为:-Ph-CH 2 -Ph-,氢化二醇c)为任选的; 当基团R具有与上述不同的含义时,使用的氢化二醇c)中的至少一种选自属于C 2〜C 6的那些, )组 化合物a)和c)的当量的总和等于化合物b)的当量。

    Curable fluoroelastomers
    7.
    发明授权
    Curable fluoroelastomers 有权
    固化含氟弹性体

    公开(公告)号:US06664338B2

    公开(公告)日:2003-12-16

    申请号:US10127601

    申请日:2002-04-23

    IPC分类号: C08F800

    CPC分类号: C08K5/0025 C08L27/16

    摘要: Fluoroelastomers curable by ionic route based on vinylidene fluoride (VDF) comprising: a) 100 parts by weight of fluoroelastomer based on vinylidene fluoride (VDF) substantially polar end group free; b) from 0.05 to 5 phr of accelerant; c) from 0.5 to 15 phr of curing agent; d) from 1 to 40 phr of one or more inorganic acid acceptors, preferably bivalent metal oxides; e) from 0 to 2.5 phr, preferably from 0 to 1.5 phr of one or more basic compounds preferably hydroxides of bivalent metals or of weak acid metal salts; f) from 0 to 80 phr of reinforcing fillers.

    摘要翻译: 基于偏二氟乙烯(VDF)的离子路线可固化的氟弹性体,其包含:a)100重量份基于偏二氟乙烯(VDF)的基本上极性无端基的含氟弹性体; b)0.05至5phr的促进剂; c)0.5至 15phr固化剂; d)1至40phr的一种或多种无机酸受体,优选二价金属氧化物; e)0-2.5phr,优选0-1.5phr的一种或多种碱性化合物,优选二价的氢氧化物 金属或弱酸金属盐; f)0至80phr的增强填料。

    Blends of fluorinated and acrylic elastomers
    8.
    发明授权
    Blends of fluorinated and acrylic elastomers 有权
    氟化和丙烯酸弹性体的共混物

    公开(公告)号:US06656991B2

    公开(公告)日:2003-12-02

    申请号:US09931010

    申请日:2001-08-17

    IPC分类号: C08K318

    摘要: Compounds comprising a peroxide and a curable blend by peroxidic way, consisting essentially of hydrocarbon elastomers containing at least an acrylic monomer, and of unsaturated fluorinated elastomers obtained by dehydro halogenation of fluorinated VDF-based elastomers, said fluorinated elastomers having in the polymer chain at least 5% by moles of hydrogenated C1 groups of the type —CH2— and/or —CH3, the amount of unsaturated fluorinated elastomer in the elastomeric blend being comprised from 1 to 99% by weight.

    摘要翻译: 包含过氧化物和通过过氧化方式的可固化共混物的化合物,基本上由至少含有丙烯酸单体的烃弹性体和通过氟化VDF基弹性体的脱氢卤化获得的不饱和氟化弹性体组成,所述氟化弹性体至少在聚合物链中具有 5%(摩尔)类型为-CH 2 - 和/或-CH 3的氢化C1基团,弹性体共混物中不饱和氟化弹性体的量为1至99重量%。

    Curable fluoroelastomeric compositions
    9.
    发明授权
    Curable fluoroelastomeric compositions 失效
    可固化的含氟弹性体组合物

    公开(公告)号:US06265494B1

    公开(公告)日:2001-07-24

    申请号:US09080954

    申请日:1998-05-19

    IPC分类号: C08F800

    摘要: Curable fluoroelastomeric compositions comprising: A) 100 phr (parts) of fluoroelastomeric copolymers based on vinylidenefluoride (VDF) copolymers and at least a partially or completely fluorinated comonomer having an ethylene unsaturation; B) 0.5 to 10 phr of a curing agent having the general formula [(R3—Si)m—(CyM2y—O—CzM2z)p—(CtM2t−1)n—Pq—O—]2Q wherein m, q are independently 0 or 1; p=0, 1, 2 or 3; n=0, 1 or 2; y, z are each from 1 to 20; t is from 3 to 10; R is selected from the group consisting of a CxM2x+1 linear or branched aliphatic chain containing hydrogen and/or fluorine (M=H and/or F), a CxM2x−1 cycloaliphatic structure containing hydrogen and/or fluorine, a CxMx−1 aromatic structure containing hydrogen or fluorine (wherein x in the formulas is an integer from 1 to 20) and Pa wherein P is a bivalent (per)fluoropolyether linking group and a is an integer from 0 to 1; Q is selected from the group consisting of an aromatic or an aliphatic structure, an aromatic structure containing nitrogen or oxygen and a structure having the following formula —S1—C(S2)—C(S3)—Z—C(S4)—C(S5)—S6— wherein S1, S2, S3, S4, S5 and S6 are equal to or different from each other, and are H or C1-C5 alkyls and Z is a C1-C18 alkylene or cycloalkylene radical, linear or branched, optionally containing oxygen and/or fluorine atoms, or a bivalent (per)fluoropolyoxyalkylene radical P; with the proviso that when p is different from 0, m=1 and n=q=0; when n is different from 0, m=p=q=0; and when q is different from 0, m=1 and p=n=0; and C) an accelerant being an onium-organic compound having a positive charge in an amount from 0.05 to 5 phr.

    摘要翻译: 可固化的含氟弹性体组合物,其包含:A)基于偏二氟乙烯(VDF)共聚物和至少部分或完全氟化的具有乙烯不饱和度的共聚单体的100phr(份)氟弹性体共聚物; B)0.5至10phr具有一般形式的固化剂 m,q独立地为0或1; p = 0,1,2或3; n = 0,1或2; y,z分别为1〜20; t为3〜10; R选自含有氢和/或氟(M = H和/或F)的CxM2x + 1直链或支链脂族链,含有氢和/或氟的CxM2x-1脂环族结构,CxMx-1 含有氢或氟的芳香族结构(式中,x为1〜20的整数)和Pa,其中P为二价(全)氟聚醚连接基,a为0〜1的整数。 Q选自芳族或脂族结构,含氮或氧的芳族结构和具有下列通式的结构-S1-C(S2)-C(S3)-ZC(S4)-C(S5) )-S6-,其中S1,S2,S3,S4,S5和S6彼此相同或不同,并且是H或C1-C5烷基,Z是直链或支链的C1-C18亚烷基或亚环烷基,任选地 含有氧和/或氟原子,或二价(全)氟聚氧亚烷基P; 条件是当p不同于0时,m = 1且n = q = 0; 当n与0不同时,m = p = q = 0; 当q不同于0时,m = 1,p = n = 0; 和C)促进剂,其为0.05至5phr的正电荷的鎓 - 有机化合物。

    Perfluoropolyethers containing a halogen different from fluorine and
having an acid end group
    10.
    发明授权
    Perfluoropolyethers containing a halogen different from fluorine and having an acid end group 失效
    含有不同于氟且具有酸端基的卤素的全氟聚醚

    公开(公告)号:US5143589A

    公开(公告)日:1992-09-01

    申请号:US648328

    申请日:1991-01-29

    摘要: Perfluoropolyethers having an acid end group of the type of acyl fluoride (or chloride) or a carboxylic group or derivatives thereof, the other end group being a perfluoroalkyl containing one or two halogen atoms different from fluorine, are prepared by photooxidation of C.sub.3 F.sub.6 and/or C.sub.2 F.sub.4, in the presence of a fully halogenated ethylene containing 1 to 4, preferably 1 or 2 atoms of halogen different from fluorine, and by the subsequent thermal of photochemical decomposition treatment of the peroxide groups which are present in the photooxidation product.

    摘要翻译: 具有酰基氟(或氯化物)类型的酸端基或羧基的全氟聚醚或其衍生物,另一端基是含有一个或两个不同于氟的卤素原子的全氟烷基,其通过C3F6和/或 C2F4在存在完全卤化的含有1至4个,优选1或2个不同于氟原子的卤素的乙烯存在下进行,并且随后对光氧化产物中存在的过氧化物基团进行光化学分解处理。