E.i. Dupont De Nemours and Company

Mark C Wolff

Kenneth T Dishart

Harold L Jackson

Thomas L Tattersall

Greg A Westbrook

Thomas A Tattersall

Disclosed are non-flammable, high-solvency compositions having utility as cleaning agents in the electronics and refrigeration industries, and as a medium for mold release agents. The compositions are non-flammable by Flame Extension Test ASTM D-3065 and Flash Point-Tag Closed Cup Test ASTM D-56-82, and have a Kauri Butanol value of at least about 40 by ASTM 1133-94. The compositions comprise the components: a.) trans-1,2-dichloroethylene; and b.) solvent selected from: i.) oxygen-containing solvents selected from alcohols, ketones, esters, siloxanes, and ethers; and ii.) hydrocarbon solvents represented by CHor CH, wherein t is from 4 to 8; and c.) an inerting agent selected from: i.) hydrofluorocarbon inerting agents represented by the formula CHF, wherein x is from 3 to 8, y is from 1 to 4, and the mole ratio of F/H in the hydrofluorocarbon inerting agent is greater than 1.6; ii.) hydrofluorocarbon ether inerting agents represented by the formula CFOCH, wherein r and s are independently selected from 1 to 6, and r is greater than or equal to 2s; and iii.) hydrochlorofluorocarbon inerting agents represented by the formulae CHClF, CHClF, and CHClF.

Non-flammable, high-solvency compositions comprising trans-1,2-dichloroethylene, solvent, and inerting agent

A cleaning composition is disclosed which is suitable for cleaning flux residue from a printed circuit board and comprises dibasic ester, a hydrocarbon solvent, a compatibilizing surfactant and water.

Cleaning composition of dibasic ester, hydrocarbon solvent,

A cleaning composition is disclosed which is suitable for cleaning flux residue from a printed circuit board and comprises dibasic ester solvent, a hydrocarbon solvent and a compatibilizing component.

Cleaning composition of dibasic ester, hydrocarbon solvent and

A cleaning composition is disclosed which is suitable for cleaning flux residue from a printed circuit board and comprises dibasic ester solvent and a hydrocarbon solvent.

Cleaning composition of dibasic ester and hydrocarbon solvent

A cleaning composition is disclosed which is suitable for cleaning flux residue from a printed circuit board and comprises a terpene compound and dibasic ester solvent.

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Wilmington, DE, United States of America

Mark C Wolff