Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Reexamination Certificate
2005-02-08
2005-02-08
Webb, Gregory (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
C510S408000, C510S407000
Reexamination Certificate
active
06852684
ABSTRACT:
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 CtH2t+2or CtH2t, wherein t is from 4 to 8; and c.) an inerting agent selected from: i.) hydrofluorocarbon inerting agents represented by the formula CxHyF(2x+2−y), 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 CrF2r+1OCsH2s+1, 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 C2HCl2F3, C2HClF4, and C3HCl2F5.
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Database WPI, Section Ch Week 199727; Derwent Publications Ltd., London, GB; Class E16, AN 1997-295276; XP002127852 & JP 09 111295 A (AG Technology KK). Apr. 28, 1997.
Tattersall Thomas L.
Westbrook Greg A.
Wolff Mark C.
E. I. du Pont de Nemours and Company
Edwards Mark A.
Sebree Chyrrea J.
Webb Gregory
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