Recycleable metalworking liquid

Compositions – Electrolytes for electrical devices

Patent

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Details

72 42, 252 493, 252 495, C10M 132

Patent

active

040338860

ABSTRACT:
A metalworking liquid having utility as a recycleable general purpose cutting and grinding coolant contains a major amount of aqueous solution of a block copolymer of ethylene oxide and propylene oxide and having a molecular weight of about 1800-2900, and an amount of both an alkanolamine cinnamate and a boron amine complex effective to inhibit corrosion. Also the liquid generally contains a germicide, an anti-foaming agent and a pH control agent. At an elevated temperature said liquid undergoes a phase separation in which most of the foregoing materials do not remain in the contaminated water which then can be discarded. The remaining mixture can be diluted with clean water and reused.

REFERENCES:
patent: 3374171 (1968-03-01), Davis
patent: 3429909 (1969-02-01), Schuster
patent: 3501404 (1970-03-01), Klaiber et al.
patent: 3769214 (1973-10-01), Davis
patent: 3791974 (1974-02-01), Borchert
patent: 3980571 (1976-09-01), Marx
patent: 3983044 (1976-09-01), Felton

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