Patent ID: 8685904

Claim:
An aqueous lubricant emulsion for medical or food apparatus, comprising: (a) 5 wt % to 30 wt % of a mineral oil; (b) 5 wt % to 30 wt % of an emulsifier system consisting of (i) a combination of sorbitan fatty acid ester and polyoxyethylene sorbitan fatty acid ester, or (ii) a combination of oleyl alcohol ether and polyoxyethylene sorbitan fatty acid ester, or (iii) a combination of sorbitan fatty acid ester and triethanolamine oleate, wherein the mass ratio of the any of the combinations is in a range of 2:8 to 8:2; (c) 0.5 wt % to 5 wt % of one or more coemulsifiers selected from the group consisting of fatty alcohols, long-chain fatty acids, and diisooctyl succinate sulfonates; and (d) the balance of water.