Adeka Corporation

Dic Corporation

Eiji Katsuno

Shinji Iino

Taro Sumi

Hiroaki Watanabe

Takayuki Taki

Hiroshi Sakata

Atsuki Shibuya

Hironobu Matsueda

Akiko Tasaki

Akihiro Kotaka

The present invention provides a lubricating oil additive, including: a molybdenum compound (A) represented by the following general formula (1); and a sulfur-based composition (B) containing a sulfur-based compound (b-1) represented by the following general formula (2) and at least one kind of sulfur-based compound (b-2) represented by the following general formula (3) or (4), and a lubricating oil composition containing the additive. In the formula (1), Rto Reach represent alkyl groups having 6 to 18 carbon atoms, the groups being identical to or different from each other, and Xto Xeach independently represent an oxygen atom or a sulfur atom. In the formula (2), Rand Reach represent alkyl groups having 3 to 24 carbon atoms, the groups being identical to or different from each other, and 'a' and “b” each represent a number from 1 to 5. In the formulae (3) and (4), Rto Reach represent alkylene groups having 1 to 28 carbon atoms, the groups being identical to or different from each other, Rand Reach independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and “c” and “d” each independently represent a number from 1 to 8, provided that at least one of Ror Rrepresents an alkyl group having 1 to 3 carbon atoms.

Lubricating oil additive and lubricating oil composition containing same

The present invention provides a lubricating oil additive, including: a molybdenum compound (A) represented by the following general formula (1); and a sulfur-based composition (B) containing a sulfur-based compound (b-1) represented by the following general formula (2) and at least one kind of sulfur-based compound (b-2) represented by the following general formula (3) or (4), and a lubricating oil composition containing the additive. In the formula (1), Rto Reach represent alkyl groups having 6 to 18 carbon atoms, the groups being identical to or different from each other, and Xto Xeach independently represent an oxygen atom or a sulfur atom. In the formula (2), Rrepresents an alkyl group having 1 to 22 carbon atoms, Rrepresents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, Rrepresents a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, and 'a' represents a number from 1 to 10. In the formulae (3) and (4), Rto Reach represent alkylene groups having 1 to 28 carbon atoms, the groups being identical to or different from each other, Rand Reach independently represent a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and 'b' and &#x201c;c&#x201d; each independently represent a number from 1 to 8, provided that at least one of Ror Rrepresents an alkyl group having 1 to 3 carbon atoms.

A lubricating composition including: a base oil, a lubricant additive composition including, as a component (A), an organic molybdenum compound of the formula (1) described in the specification, and as a component (B), an amine compound of the formula (2) described in the specification, and a specific metal-based cleaner, wherein a content of the component (B) is 2.9 to 18.6 parts by mass relative to 100 parts by mass of molybdenum atoms of the component (A), and a content of the metal-based cleaner is 0.1% to 10% by mass relative to a total amount of the lubricating composition, wherein the lubricating composition does not include tetraalkyl thiuram disulphide, and wherein the component (A) in terms of the amount of molybdenum atoms is 400 to 1200 ppm by mass relative to a total amount of the lubricating composition.

Lubricant additive composition, lubricating composition containing same and engine oil composition consisting of lubricating composition

A lubricant composition including a binuclear molybdenum compound (A) and a trinuclear molybdenum compound (B), wherein these compounds are included in a range represented by (molybdenum of the binuclear molybdenum compound (A)):(molybdenum of the trinuclear molybdenum compound (B))=99.98:0.02 to 95:5 as a mass ratio.

Lubricant composition and lubricating oil composition

An electricity storage device maintains low internal resistance and high electric capacity. The nonaqueous-electrolytic-solution hybrid electricity storage device employs an anode into/from which lithium can be intercalated and deintercalated and a cathode including activated carbon, even after high-temperature storage and/or high-temperature charging/discharging. Specifically, this electricity storage device includes an anode into/from which lithium can be intercalated and deintercalated, a cathode that includes activated carbon, and a nonaqueous electrolytic solution, wherein the electricity storage device employs a nonaqueous electrolytic solution that includes at least one type of compound represented by one of general formulas (1) to (5). Details on the general formulas (1) to (5) are as described in the Description.

Electricity storage device

Disclosed is a nonaqueous secondary battery using a positive electrode containing a transition metal and lithium. The battery is prevented from deterioration due to elution of the transition metal from the positive electrode and thereby capable of maintaining small internal resistance and high electrical capacity even after high temperature storage or high-temperature charge and discharge cycles. The battery includes a negative electrode capable of intercalating and deintercalating lithium, a positive electrode containing a transition metal and lithium, and a nonaqueous electrolyte having a lithium salt dissolved in an organic solvent, the nonaqueous electrolyte containing a polycarboxylic ester compound represented by general formula (1) or (2).

Growing community of inventors

Tokyo, Japan

Eiji Katsuno