Mechanical working in the presence of a multi-purpose...

Compositions – Heat-exchange – low-freezing or pour point – or high boiling...

Reexamination Certificate

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C252S073000, C252S079000, C508S110000, C508S431000

Reexamination Certificate

active

06989107

ABSTRACT:
A method for the mechanical working of metals and alloys which comprises conducting the mechanical working in the presence of an aqueous cooling lubricant having a pH of 6-10 and containing a phosphate ester of the formulain-line-formulae description="In-line Formulae" end="lead"?R1(oxyalkylene)nOP(O)(X)(OH)  (I),in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?orin-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?(HO)2(O)P-(oxyalkylene)mOP(O)(OH)2  (II),in-line-formulae description="In-line Formulae" end="tail"?where R1is an alkyl group with 1-12 carbon atoms, oxyalkylene is a group containing 2-4 carbon atoms, n is a number from 1-20, X is hydroxyl, R1O or R1(oxyalkylene)nO, where R1, oxyalkylene and n have the meanings mentioned above, and m is a number from 4-40, or a salt thereof, and an alkenyl substituted succinic acid of the formulain-line-formulae description="In-line Formulae" end="lead"?HOOCCH(R2)CH2COOH  (III),in-line-formulae description="In-line Formulae" end="tail"?where R2is an alkenyl group with 4-10 carbon atoms, or a salt thereof, or a mixture of any of the compounds I, II and III.

REFERENCES:
patent: 4342658 (1982-08-01), Tincher et al.
patent: 4670168 (1987-06-01), Laemmle et al.
patent: 6432890 (2002-08-01), Scold
patent: 6592775 (2003-07-01), Scold
patent: 6602833 (2003-08-01), Scold
patent: A12943963 (1981-05-01), None
patent: A10120822 (1984-10-01), None

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