C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 125/00 (2006.01) B22F 1/00 (2006.01) C10M 107/00 (2006.01) C10M 111/02 (2006.01) C10M 111/04 (2006.01) C10M 129/00 (2006.01)
Patent
CA 2186880
The present invention provides lubricant compositions for the powder metallurgical field. The lubricant compositions contain a solid phase lubricant such as graphite, molybdenum disulfide, and polytetrafluoroethylene in combination with a liquid phase lubricant that is a binder for the solid phase lubricant. The binder can be chosen from various classes of compounds including polyethylene glycols, polyethylene glycol esters, partial esters of C3-6 polyhydric alcohols, polyvinyl esters, and polyvinyl pyrrolidones. The binder is solubilized in an organic solvent.
La présente invention concerne des compositions lubrifiantes utilisées dans le domaine de la métallurgie des poudres. Ces compositions lubrifiantes renferment un lubrifiant en phase solide tel que le graphite, le bisulfure de molybdène et le polytétrafluoroéthylène et est associé à un lubrifiant en phase liquide qui lui sert de liant. Le liant peut être choisi parmi diverses classes de composés tels que les polyéthylène-glycols, les esters de polyéthylène-glycol, les esters partiels d'alcools polyvalents en C¿3-6?, les esters de polyvinyle et les pyrrolidones de polyvinyle. Le liant est solubilisé dans un solvant organique.
Lawrence Ann
Luk Sydney
Gowling Lafleur Henderson Llp
Hoeganaes Corporation
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