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Organic Solvent for Cleaning Cast Metal Direct Access Storage Device (DASD) Components

IP.com Disclosure Number: IPCOM000119449D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 1 page(s) / 29K

Publishing Venue

IBM

Related People

Stout, HE: AUTHOR

Abstract

A chemical formulation for cleaning metal parts is disclosed. The formulation is based on an organic solvent and is completely miscible with water. The solvent is not detrimental to metal alloys that can be reactive with standard aqueous metal cleaning solvents.

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Organic Solvent for Cleaning Cast Metal Direct Access Storage Device
(DASD) Components

      A chemical formulation for cleaning metal parts is disclosed.
The formulation is based on an organic solvent and is completely
miscible with water.  The solvent is not detrimental to metal alloys
that can be reactive with standard aqueous metal cleaning solvents.

      This method involves the combination of a cyclic amine organic
solvent, N-methyl 2-pyrrolidone (NMP), with a lactone, such as
ascorbic acid, and an alcohol ethoxylate surface active agent, such
as Alfonic 810-60, to make an organic solvent which is capable of
removing hydrocarbon oils from metal parts.

      The combination of the three compounds is NMP, ascorbic acid
50gm/liter of NMP, Alfonic 1 percent by volume, or minor variations
thereto.  The formulation does not contain any water and is a purely
organic solvent mixture.  The solvent is completely miscible with
water and can be rinsed off the parts with either hot or cold running
water.  In this combination, this solution will effectively remove
hydrocarbon oils from metallic parts.

      Disclosed anonymously.