Copolymer, production process thereof, lubricating oil viscosity modifier, and lubricating oil composition
    3.
    发明申请
    Copolymer, production process thereof, lubricating oil viscosity modifier, and lubricating oil composition 有权
    共聚物,其制备方法,润滑油粘度调节剂和润滑油组合物

    公开(公告)号:US20090209721A1

    公开(公告)日:2009-08-20

    申请号:US12379143

    申请日:2009-02-13

    摘要: Copolymers when used as lubricating oil viscosity modifiers enable lubricating oils to show excellent low-temperature properties. Processes for producing the copolymers are disclosed. Lubricating oil viscosity modifiers and lubricating oil compositions contain the copolymers.A copolymer includes structural units derived from ethylene and structural units derived from a C3-20 α-olefin and satisfies the following requirements (1) to (8): (1) the melting point (Tm) according to DSC is in the range of 0 to 60° C.; (2) the melting point (Tm) and the density D (g/cm3) satisfy the equation: Tm≧1073×D−893; (3) Mw/Mn according to GPC is from 1.6 to 5.0; (4) the half-value width (ΔThalf) of a melting peak measured by DSC is not more than 90° C.; (5) the half-value width (ΔThalf) and the melting point (Tm) satisfy the equation: ΔThalf≦−0.71×Tm+101.4; (6) the heat of fusion (ΔH) as measured by DSC is not more than 60 J/g; (7) the crystallization temperature (Tc) measured by DSC is not more than 70° C.; (8) the heat of fusion (ΔH), the crystallization temperature (Tc), each measured by DSC and the crystallization temperature measured by a CRYSTAF method (Tcrystaf) satisfy the equation: Tc−Tcrystaf≧0.028×ΔH+25.3.

    摘要翻译: 当用作润滑油粘度调节剂时,共聚物使润滑油显示出优异的低温性能。 公开了制备共聚物的方法。 润滑油粘度调节剂和润滑油组合物含有共聚物。 共聚物包括衍生自乙烯的结构单元和衍生自C3-20α-烯烃的结构单元,并且满足以下要求(1)至(8):(1)根据DSC的熔点(Tm)在 0〜60℃。 (2)熔点(Tm)和密度D(g / cm 3)满足下式:Tm> = 1073×D-893; (3)根据GPC的Mw / Mn为1.6〜5.0; (4)通过DSC测定的熔融峰的半值宽度(DeltaThalf)不大于90℃。 (5)半值宽度(DeltaThalf)和熔点(Tm)满足以下等式:DeltaThalf <= -0.71xTm + 101.4; (6)通过DSC测定的熔解热(DeltaH)不大于60J / g; (7)通过DSC测定的结晶温度(Tc)为70℃以下。 (8)通过DSC测定的各自测量的结晶温度(Tc),通过CRYSTAF法(Tcrystaf)测定的结晶温度满足下列公式:<?in-line-formula description =“In- 线公式“end =”lead“?> Tc-Tcrystaf> = 0.028xDeltaH + 25.3。<?in-line-formula description =”In-line Formulas“end =”tail“?>

    Copolymer, production process thereof, lubricating oil viscosity modifier, and lubricating oil composition
    9.
    发明授权
    Copolymer, production process thereof, lubricating oil viscosity modifier, and lubricating oil composition 有权
    共聚物,其制备方法,润滑油粘度调节剂和润滑油组合物

    公开(公告)号:US07915358B2

    公开(公告)日:2011-03-29

    申请号:US12379143

    申请日:2009-02-13

    IPC分类号: C08F4/646

    摘要: Copolymers when used as lubricating oil viscosity modifiers enable lubricating oils to show excellent low-temperature properties. Processes for producing the copolymers are disclosed. Lubricating oil viscosity modifiers and lubricating oil compositions contain the copolymers.A copolymer includes structural units derived from ethylene and structural units derived from a C3-20 α-olefin and satisfies the following requirements (1) to (8): (1) the melting point (Tm) according to DSC is in the range of 0 to 60° C.; (2) the melting point (Tm) and the density D (g/cm3) satisfy the equation: Tm≧1073×D−893; (3) Mw/Mn according to GPC is from 1.6 to 5.0; (4) the half-value width (ΔThalf) of a melting peak measured by DSC is not more than 90° C.; (5) the half-value width (ΔThalf) and the melting point (Tm) satisfy the equation: ΔThalf≦−0.71×Tm+101.4; (6) the heat of fusion (ΔH) as measured by DSC is not more than 60 J/g; (7) the crystallization temperature (Tc) measured by DSC is not more than 70° C.; (8) the heat of fusion (ΔH), the crystallization temperature (Tc), each measured by DSC and the crystallization temperature measured by a CRYSTAF method (Tcrystaf) satisfy the equation: Tc−Tcrystaf≧0.028×ΔH+25.3.

    摘要翻译: 当用作润滑油粘度调节剂时,共聚物使润滑油显示出优异的低温性能。 公开了制备共聚物的方法。 润滑油粘度调节剂和润滑油组合物含有共聚物。 共聚物包括衍生自乙烯的结构单元和衍生自C3-20α-烯烃的结构单元,并且满足以下要求(1)至(8):(1)根据DSC的熔点(Tm)在 0〜60℃。 (2)熔点(Tm)和密度D(g / cm3)满足下式:Tm≥1073×D-893; (3)根据GPC的Mw / Mn为1.6〜5.0; (4)通过DSC测定的熔融峰的半值宽度(&Dgr; Thalf)不大于90℃; (5)半值宽度(&Dgr; Thalf)和熔点(Tm)满足下式:&Dgr; Thalf&nlE; -0.71×Tm + 101.4; (6)通过DSC测定的熔化热(&Dgr; H)不大于60J / g; (7)通过DSC测定的结晶温度(Tc)为70℃以下。 (8)通过DSC测定的结晶温度(Tc)和通过CRYSTAF法(Tcrystaf)测定的结晶温度的结晶温度(Tc)满足下式:Tc-Tcrystaf≥0.028×&Dgr; H + 25.3。