Nippon Oil Fats Co., Ltd.

Yoshiharu Tanizaki

Kenichiro Minagawa

Hiroshi Kawaguchi

Shigeyuki Takase

Shinichi Akimoto

Yoshinori Takano

Kazuo Furuse

Kiyomitu Watanabe

Heihachiro Okabe

Kuninori Horioka

An aqueous lubricant composition contains a first polyether component represented by the general formula I given below, a second polyether component expressed by the general formula II given below and a polyamide component represented by the general formula III. This composition exhibiting a highly advantageous viscosity behavior over a wide range of temperatures has a high resistivity against shearing stress and a superior storage stability, and is thus very suitable for use as a hydraulic fluid, metal drawing fluid, cutting fluid, press oil and the like even in the form of a high water base fluid having a water content over 80% by the components are weight: ##STR1## in which R.sup.1 represents a hydrocarbon group having 5-26 carbon atoms, R.sup.2 is a residue of a polyhydric alcohol, a polyhydric phenol or a polyamine each having 2-26 carbon atoms, R.sup.3 denotes a hydrocarbon group having obtained when a mono- or polycarboxylic acid having 8 to 54 carbon atoms is reacted with an alkanolamine or an alkylalkanolamine to form the formula III compound R.sup.4 represents hydrogen atom, a hydrocarbon group having 1-26 carbon atoms or a group expressed by (C.sub.s H.sub.2S O).sub.h H, Y stands for an oxygen or nitrogen atom, p and q represent an integer of 3 or 4, r and s denote an integer of 2 or 3, g and h represent each an integer from 1 to 20 and t is an integer from 1 to 5, wherein a.gtoreq.0, b.gtoreq.2, c.gtoreq.0, d&gt;0, e.gtoreq.0 and f&gt;0.

Aqueous lubricant composition

A polymer of polyoxyalkylene glycol monoacrylate or polyoxyalkylene glycol monomethacrylate is very useful as a base of lubricants.

Water base lubricant composition

A hydraulic fluid composition comprising polyoxyalkylene glycol monoalkyl ether, polyoxyalkylene glycol dialkyl ether, borate ester of polyoxyalkylene glycol monoalkyl ether, and high molecular weight polyoxyalkylene compound, has improved viscosity characteristics, is water-insensitive and is suitable as a central system hydraulic fluid and brake fluid.

Hydraulic fluid composition containing glycol ethers and borate ester

Wood fibrous materials which are impregnated with one or more compounds selected from a group consisting of polyoxyalkylene glycol monoacrylates and polyoxyalkylene glycol, monomethacrylates, followed by curing the impregnated impregnant, are splendid in the dimensional stability and become good in other properties thereof.

Wood fibrous material and a method for improving the qualities thereof

Polyoxyalkylene glycol diethers having the general formula ##EQU1## are a good viscosity index improver having a high solubility in a mineral oil and an excellent shear stability. This invention relates to a lubricating oil composition consisting essentially of a mineral oil and the above described polyoxyalkylene glycol diether.

Lubricating oil composition containing polyoxyalkylene glycol diether

A hydraulic oil composition for automobile, comprising low molecular weight polyoxyalkylene glycol monoalkyl ether and dialkyl ether and a high molecular weight polyoxyalkylene compound. The hydraulic oil composition has improved low temperature viscosity characteristics and fluidity and has a low swelling action on rubber.

Growing community of inventors

Yokohama, Japan

Yoshiharu Tanizaki