점도 지수 향상제, 윤활유 조성물 및 윤활유 조성물의 제조 방법
    5.
    发明公开
    점도 지수 향상제, 윤활유 조성물 및 윤활유 조성물의 제조 방법 审中-实审
    粘度指数改进剂,润滑油组合物和生产润滑油组合物的方法

    公开(公告)号:KR1020170129106A

    公开(公告)日:2017-11-24

    申请号:KR1020177022295

    申请日:2016-03-04

    CPC classification number: C10M145/14

    Abstract: 점도지수향상효과가우수한점도지수향상제및 장기간의사용에의한점도저하가적고, 저온점도가우수한윤활유조성물및 그제조방법을제공한다. 본발명의점도지수향상제는, 알킬기의탄소수가 5 이상인 (메트)아크릴산알킬에스테르 (a) 및알킬기의탄소수가 1 ∼ 4 인 (메트)아크릴산알킬에스테르 (b) 를구성단량체로하는공중합체 (A) 를함유하는점도지수향상제로서, 상기알킬기의탄소수가 5 이상인 (메트)아크릴산알킬에스테르 (a) 의알킬기의몰 평균탄소수 (Q) 가 29 이상이고, 구성단량체로서상기공중합체 (A) 의중량에기초하여상기알킬기의탄소수가 1 ∼ 4 인 (메트)아크릴산알킬에스테르 (b) 를 38 ∼ 75 중량% 함유한다.

    Abstract translation: 提供具有优异的粘度指数改进效果的粘度指数改进剂和具有由于长期使用而具有较小粘度降低和具有低温粘度的润滑剂组合物及其制备方法。 本发明的粘度指数改进剂,所述共聚物(A到(甲基)(b)或更多个(甲基),其具有烷基的5的碳原子数丙烯酸烷基酯是丙烯酸烷基酯(a)和具有1的烷基的碳原子数至4作为构成单体 ),其含有,按重量计,共聚物的粘度指数提高剂(a)作为摩尔和平均碳原子数(Q)大于29,该烷基具有5个以上的(甲基)丙烯酸烷基酯的碳原子数的烷基的的构成单体(a)的 (甲基)丙烯酸烷基酯(b)在烷基中具有1至4个碳原子。

    건설 기계에서 사용하기 위한 유압유
    10.
    发明公开
    건설 기계에서 사용하기 위한 유압유 无效
    液压油用于建筑机械

    公开(公告)号:KR1020100059908A

    公开(公告)日:2010-06-04

    申请号:KR1020107006547

    申请日:2008-09-23

    Abstract: Hydraulic oil for use in construction machinery, wherein the hydraulic oil comprises a poly(meth)acrylate of weight average molecular weight in the range of from 30,000 to 100,000 in a highly refined base oil but does not incorporate an oiliness agent, and wherein the kinetic viscosity at 60°C is in the range of from 25 to 60 mm /s, the kinetic viscosity at 80°C is in the range of from 15 to 34 mm /s, the viscosity index is in the range of from 200 to 220, and the low temperature cranking viscosity at 25°C is in the range of from 1000 to 8000 mPa.s. The hydraulic oil of the present invention not only has a high kinetic viscosity in the high-temperature domain even though the incorporation of an oiliness agent is omitted, and can thereby effect satisfactory operation efficiently and which has excellent braking characteristics, but which also has a low viscosity in the low-temperature domain and so has excellent low-temperature performance.

    Abstract translation: 用于工程机械的液压油,其中所述液压油包含在高度精炼的基础油中重均分子量为30,000至100,000的聚(甲基)丙烯酸酯,但不包含油性剂,并且其中所述动力学 在60℃下的粘度在25〜60mm / s的范围内,80℃下的动力粘度为15〜34mm / s,粘度指数为200〜220 ,25℃时的低温起动粘度在1000〜8000mPa·s的范围内。 本发明的液压油即使省略了油性剂的结合,也不仅在高温区域具有高动力粘度,因此能够有效地实现令人满意的操作,并且具有优异的制动特性,但也具有 在低温区域粘度低,所以具有优异的低温性能。

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