Abstract:
The invention provides a grease composition for rolling bearings that can exhibit improved bearing life that can secure the low noise performance under high temperature conditions, and a rolling bearing where the above-mentioned grease composition is enclosed. The grease composition for rolling bearings includes a base oil, a urea thickener and a metal deactivator. The base oil has an aniline point of 110° C or more. The urea thickener is at least one kind of diurea compound selected from the group consisting of diurea compounds represented by formula (1): R 1 - NHCONH - R 2 - NHCONH - R 3 (wherein R 1 and R 3 , which may be the same or different from each other represent a C 6-30 alkyl group, a C 5-8 cycloalkyl group or a C 6-10 aryl group, and R 2 represents a bivalent aromatic hydrocarbon group having 6 to 15 carbon atoms.)
Abstract:
The invention relates to a composition comprising a) at least one N-methyl-N-acylglucamine of formula (I), wherein R 1 represents a linear or branched, saturated or unsaturated hydrocarbon chain with 7 to 21 carbon atoms, one or more organic acids of formula (II) and/or the salts thereof, R 2 -COOM, wherein R 2 represents a linear or branched alkyl group or a linear or branched mono- or poly-unsaturated alkenyl group with 5 to 29 carbon atoms, and M represents hydrogen or one or more cations, wherein the cations are present in charge-equalizing amounts, and c) one or more alkanolamines of formula (III), wherein NR 1 R 2 R 3 R 1 , R 2 and R 3 represent hydrogen, a linear or branched alkyl group with 1 to 4 carbon atoms, a cycloalkyl group with 5 to 7 carbon atoms, a linear or branched hydroxyalkyl group with 2 to 5 carbon atoms and 1 or 2 hydroxy groups or a hydroxyether group with 2 to 6 carbon atoms, with the provision that at least one of the groups is a hydroxyalkyl group or a hydroxyether group.
Abstract translation:本发明涉及包含a)至少一种式(I)的N-甲基-N-酰基葡糖胺的组合物,其中R 1表示具有7至21个碳原子的直链或支链,饱和或不饱和的烃链,一种或多种有机酸 式(II)和/或其盐的R2-COOM,其中R2表示直链或支链烷基或具有5至29个碳原子的直链或支链单或多不饱和烯基,M表示氢或 一种或多种阳离子,其中阳离子以电荷均衡的量存在,和c)一种或多种式(III)的链烷醇胺,其中NR 1 R 2 R 3 R 1,R 2和R 3表示氢,具有1至4个碳的直链或支链烷基 具有5至7个碳原子的环烷基,具有2至5个碳原子和1或2个羟基的直链或支链羟烷基或具有2至6个碳原子的羟基醚基团,条件是至少一个 基团是羟基烷基或羟基醚基团 。
Abstract:
A composition, including 40-50 wt-% C14 paraffins, based on the total weight of the composition, and 35-45 wt-% C15 paraffins, based on the total weight of the composition, wherein the C14 and C15 paraffins are produced from a biological raw material.
Abstract:
Tribological, rheological, and polishing applications include lubricants, viscosity modification, and chemical-mechanical planarization. The nanosheets are useful in improving efficiency and lifetime of machinery, saving energy for mechanical operations, and optimizing manufacturing processes in surface engineering.
Abstract:
The present invention provides a Fischer-Tropsch derived gas oil fraction having an initial boiling point of at least 185°C and a final boiling point of at most 225°C. In another aspect the present invention provides a functional fluid formulation comprising a Fischer-Tropsch derived gas oil fraction having an initial boiling point of at least 185°C and a final boiling point of at most 225°C.
Abstract:
Provided is a graphite-based carbon material useful as a graphene precursor, from which graphene is easily exfoliated when the graphite-based carbon material is useful as a precursor and from which a highly-concentrated graphene dispersion can easily be obtained. The graphite-based carbon material is a graphite-based carbon material useful as a graphene precursor wherein a Rate (3R) based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate 3 R = P 3 / P 3 + P 4 × 100 wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.
Abstract translation:提供了一种石墨基碳材料,其可用作石墨烯前体,当石墨基碳材料用作前体时,石墨烯易于剥离,并且可以容易地获得高浓度的石墨烯分散体。 作为石墨烯前体的石墨类碳材料是石墨类碳材料,其中,由下述式1定义的基于X射线衍射法的速度(3R)为31%以上:率3 ¢ R = P ¢3 / P ¢3 + P ¢4×100其中P3是基于X射线衍射法的菱方石墨层(3R)的(101)面的峰强度,P4是 基于X射线衍射法的六方石墨层(2H)的(101)面的峰强度。
Abstract:
Provided is a graphite-based carbon material useful as a graphene precursor, from which graphene is easily exfoliated when the graphite-based carbon material is useful as a precursor and from which a highly-concentrated graphene dispersion can easily be obtained. The graphite-based carbon material is a graphite-based carbon material useful as a graphene precursor wherein a Rate (3R) based on an X-ray diffraction method, which is defined by following Equation 1 is 31% or more: Rate 3 R = P 3 / P 3 + P 4 × 100 wherein P3 is a peak intensity of a (101) plane of the rhombohedral graphite layer (3R) based on the X-ray diffraction method, and P4 is a peak intensity of a (101) plane of the hexagonal graphite layer (2H) based on the X-ray diffraction method.
Abstract translation:提供了一种石墨基碳材料,其可用作石墨烯前体,当石墨基碳材料用作前体时,石墨烯易于剥离,并且可以容易地获得高浓度的石墨烯分散体。 石墨基碳材料是石墨基碳材料,其可用作石墨烯前体,其中由以下等式1定义的基于X射线衍射方法的速率(3R)为31%以上:速率3 R = P 3 / P 3 + P 4×100其中P3是基于X射线衍射方法的菱方石墨层(3R)的(101)面的峰强度,P4是(101) 基于X射线衍射法的六方石墨层(2H)的平面。
Abstract:
The present invention provides a lubricating oil composition for transmissions which is improved in fuel saving properties and has excellent metal fatigue prevention properties and heat resistance. The lubricating oil composition comprises (A) a mineral base oil having a 100°C kinematic viscosity of 1.5 mm 2 /s or higher and 3.5 mm 2 /s or lower, a pour point of -25°C or lower, a viscosity index of 110 or greater, a %C N of 2 or greater and 20 or less and a %C A of 3 or less, the lubricating oil composition having a 100°C kinematic viscosity of 2.5 mm 2 /s or higher and 3.8 mm 2 /s or lower.
Abstract:
The present invention provides a lubricating oil composition having an extremely high viscosity index and a low coefficient of traction as a low coefficient of fluid friction in an elastohydrodynamic lubrication which is excellent in saving of energy and reduction in fuel consumption. The lubricating oil composition according to the present invention includes the following components (A) and (B): (A) a low-viscosity synthetic oil comprising a compound containing ether bond(s) in a molecule thereof and having a kinematic viscosity of less than 10 mm 2 /s as measured at 40°C, in which a ratio of the number of oxygen atoms to the number of carbon atoms as constituents of the compound (O/C ratio) and the kinematic viscosity (mm 2 /s) of the compound as measured at 40°C satisfy the following formula (1): Kinematic Viscosity at 40°C ≤ 12 - [(O/C ratio) x 30] (1); and (B) a high-viscosity synthetic oil as a hydrocarbon-based synthetic oil having a kinematic viscosity of 40 mm 2 /s or more as measured at 100°C which includes at least one compound selected from the group consisting of an α-olefin oligomer, a hydrogenated α-olefin oligomer and an ethylene-propylene co-oligomer.