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Browse Prior Art Database

Solvent Cleaner

IP.com Disclosure Number: IPCOM000050084D
Original Publication Date: 1982-Sep-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Bhatt, AC: AUTHOR

Abstract

The following is a mixture of solvents which can be used to clean equipment contaminated with epoxy resins. The following composition is volume by volume percentage: 20 percent Ethyl Acetate 25 percent Acetophenone 05 percent MEK 50 percent Acetone 100 percent (by volume)

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 100% of the total text.

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Solvent Cleaner

The following is a mixture of solvents which can be used to clean equipment contaminated with epoxy resins. The following composition is volume by volume percentage: 20 percent Ethyl Acetate

25 percent Acetophenone

05 percent MEK

50 percent Acetone

100 percent (by volume)

This mixture contains both active and latent type solvents. The presence of carbonyl, ester and an active methylene group in the mixture gives an excellent combined solvent power. The mixture acts as a dewaxing and decreasing agent. Also, it is compatible with all three different, partially cured typical blends of epoxy varnishes in MEK. The three different varnishes are based on brominated epoxy resin plus cresol type novalac epoxy resin, epoxy amine laminate resin blended with dicyandiamide, tetramethyl butane diamine or benzyldimethyl amine, phthalocyanine, ORASOL* yellow.

The individual components of the mixture are incompatible with the above typical blends, while the mixture is compatible. Also, the mixture gives higher TLV which in tune becomes elective over other base solvents of lower TLV to clean equipment contaminated with different types of partially cured varnishes. * Trademark of CIBA Chemical & Dye Co.

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