Kao Corporation

Nippon Kokan Kabushiki Kaisha

Nihon Parkerizing Co., Ltd.

Takeru Sharyo

Rikio Tsushima

Takashi Mukai

Hiroshi Kuwamoto

Hiroyuki Nagamori

Shuichi Iwado

Osamu Furuyama

Sakae Sonoda

Kouji Kaburagi

Ryoichiro Takahashi

Masaaki Watanabe

Kaoru Shiraishi

In the cold rolling oils for steel sheets of the present invention, when 0.2-5% by weight of a high molecular nonionic surfactant having a molecular weight of 2000-15000 and an HLB value of 5-9, as well as 0.2-5% by weight of another nonionic surfactant having 12-16 HLB value, are incorporated with a cold rolling oil as emulsifying and dispersing agents, anti-coalescence of oil particles emulsified and dispersed are remarkably improved, and they are less affected by inclusion of iron powder so that excellent stability with time in an emulsified and dispersed state is obtained, as well as that its plateout is significantly improved. Further, the concentration of the resulting cold rolling oils does not decrease, even in case of weak stirring force, so that stable performance with time are obtained. In addition, when 0.1-10% by weight of an acetylene glycol nonionic surfactant is further incorporated with the above-described cold rolling oils for steel sheets of the invention, adverse effects due to inclusion of iron powder are safely avoided.

Cold rolling oil for steel sheet

A metal working water-soluble lubricant composition comprising a water-soluble polymer compound whose counter anion is acidic phosphorus-containing compound or boric acid is disclosed. The water-soluble polymer compound is selected from the group consisting of cationic or amphoteric addition polymers, ring-opened polymers, polycondensation products and salts or quaternary ammonium salts of natural polymer derivatives having at least one basic or cationic nitrogen atom in one molecule thereof with a molecular weight of 1,000 to 10,000,000. The composition has a load resistance equal to or higher than known liquid lubricants which contain mineral oils, beef tallow etc., and shows an excellent lubricating performance when applied to a metal working surface.

Metal working water-soluble lubricant composition and method of feeding

Growing community of inventors

Fukuyama, Japan

Takeru Sharyo