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US4292187A Lubricating oils for the working of metals 失效
用于金属加工的润滑油

Lubricating oils for the working of metals
摘要:
A condensation product from aliphatic or cycloaliphatic polyols, aliphatic saturated or once unsaturated hydroxycarboxylic acids and aliphatic or cycloaliphatic saturated or unsaturated monocarboxylic acids is an effective lubricant for the working of metals, optionally in admixture with other lubricating oils and conventional additives.
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