Fluorinated greases having a low torque at low temperatures
    80.
    发明申请
    Fluorinated greases having a low torque at low temperatures 审中-公开
    在低温下具有低扭矩的氟化润滑脂

    公开(公告)号:US20060281641A1

    公开(公告)日:2006-12-14

    申请号:US11449711

    申请日:2006-06-09

    Inventor: Patrizia MacCone

    Abstract: Fluorinated greases comprising: (A) from 1% to 50% by weight of a thickener; (B) from 99% to 50% by weight of a mixture of: (B1) from 0, 1 to 100% by weight of a compound of structure: X1—O(CF2O)n(CF2CF2O)m(CF2CF2CF2O)p(CF2CF2CF2CF2O)q—X2  (I) wherein: X1, X2 have formula —(CF2)ZCF3 wherein z is an integer between 0 and 3; n is an integer between 1 and 200; m is an integer between 0 and 200; p, q are integers between 0 and 10; with the proviso that: the (p+q)/(p+q+m+n)≦0.05; m/n≦0.7; the number average molecular weight of (I) is between 1,000 and 10,000; the kinematic viscosity at 40° C. is lower than 20 cSt; and (B2) from 99.9% to 0% by weight of a perfluoropolyether oil having a kinematic viscosity at 40° C. higher than 15 cSt and comprising repeating units of the type (CFXO) wherein X is F or CF3; —CF2CF2O—, —C3F6O, —CF(CF3) CF2O, —CF2CF (CF3) O—, statistically distributed along the chain.

    Abstract translation: 氟化润滑脂,其包含:(A)1重量%至50重量%的增稠剂; (B)99重量%至50重量%的混合物:(B1)0.1至100重量%结构式的化合物:&lt;线内公式描述=“在线配方”末端 =“铅”→X 1 -O(CF 2 O)n(CF 2 CH 2 O 2) (CF 2)2 CF 2)(CF 2)(CF 3) 2→2→2→2→2→2→2→2→2→2→2→2 < (I)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中:X 1,X 2, 具有式 - (CF 2)3 Z 3 CF 3其中z是0和3之间的整数; n是1和200之间的整数; m是0和200之间的整数; p,q是0和10之间的整数; 条件是:(p + q)/(p + q + m + n)<= 0.05; m / n <= 0.7; (I)的数均分子量为1,000〜10,000; 40℃下的运动粘度低于20cSt; 和(B2)99.9%至0%重量的具有40℃以上运动粘度高于15cSt的全氟聚醚油,并且包含其中X为F或CF 3的重复单元(CFXO) / SUB>; -CF 2,CF 2,O,-C 3,C 6,O,-CF(CF 3) 3 CF 3,CF 2 CF 2,CF 3,CF 3,CF 2,CF 3,CF 3,CF 3,

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