C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 135/02 (2006.01) C10M 159/12 (2006.01) C10M 173/02 (2006.01)
Patent
CA 2344635
The present invention provides a sulfur-based extreme-pressure additive that is completely soluble in water without using a surfactant, and has satisfactory odor and hue. In addition, the present invention provides a cutting liquid and grinding liquid having superior defoaming property and rust preventive characteristics, while also having high load resistance and lubrication performance comparable to cutting oils and grinding oils of the prior art. The above objects are achieved by an extreme-pressure additive comprising the salt of a condensation product of a sulfurized hydroxy-unsaturated fatty acid, the condensation product having a sulfur content of 8 to 15% by weight (mass), color of 6 or less, and acid value of 80 to 200, and a grinding liquid comprising that extreme-pressure additive and water.
L'invention concerne un additif extrême pression, sulfuré, ne contenant pas de tensioactifs, parfaitement soluble dans l'eau, d'odeur réduite et de teinte satisfaisante. L'invention concerne également un fluide de coupe et un fluide de rectification, lesquels possèdent d'excellentes performances de support de charge et de lubrification par rapport aux huiles de coupe et de rectification classiques. Cet additif extrême pression comprend un sel d'un condensat d'un acide hydroxy gras, insaturé, sulfuré; le condensat possède une teneur en soufre comprise entre 9 et 15 % en poids, une teinte de 6 ou moins, et sa valeur acide est de l'ordre de 80 à 100. Le fluide de rectification comprend cet additif extrême pression ainsi que de l'eau.
Ibi Kazumasa
Yamada Shigeru
Dainippon Ink And Chemicals Inc.
Sim & Mcburney
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