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Browse Prior Art Database

Ester Flux for Wave Soldering

IP.com Disclosure Number: IPCOM000060109D
Original Publication Date: 1986-Feb-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Gore, RR: AUTHOR [+3]

Abstract

The flux is composed of a mono- or di-ester of glycerine, solketal, or other alcohol and ethylenediaminetetraacetic a Where required for charge balance of carboxylate groups, lithium, sodium, or potassium cations may be used.

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Ester Flux for Wave Soldering

The flux is composed of a mono- or di-ester of glycerine, solketal, or other alcohol and ethylenediaminetetraacetic a Where required for charge balance of carboxylate groups, lithium, sodium, or potassium cations may be used.

The flux has been prepared using the following general methods: 1)The dianhydride of ethylenediaminetetraacetic acid is added to glycerine at an appropriate temperature. Just before, or as soon as dissolution is complete, the lithium, sodium, or potassium carbonate salt is added in such proportion as to stoichiometrically produce the desired salt of the ester. 2)An ester of solketal or other alcohol with ethylenediaminetetraacetic acid is added to glycerine at an appropriate temperature. Just before, or as soon as dissolution is complete, the lithium, sodium, or potassium carbonate salt is added in such proportion as to stoichiometrically produce the desired salt of the ester. The flux may also be prepared by adding the lithium, sodium, or potassium salt of a mono- or di-ester of glycerine, solketal, or other alcohol and ethylenediaminetetraacetic acid to glycerine.

Disclosed anonymously.

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