MY110118A - Cleaning process - Google Patents

Cleaning process

Info

Publication number
MY110118A
MY110118A MYPI92000895A MYPI19920895A MY110118A MY 110118 A MY110118 A MY 110118A MY PI92000895 A MYPI92000895 A MY PI92000895A MY PI19920895 A MYPI19920895 A MY PI19920895A MY 110118 A MY110118 A MY 110118A
Authority
MY
Malaysia
Prior art keywords
water
contaminant
substrate
composition
contaminated
Prior art date
Application number
MYPI92000895A
Inventor
E Hayes Michael
L Bolden Paul
Original Assignee
Petroferm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Petroferm Inc filed Critical Petroferm Inc
Publication of MY110118A publication Critical patent/MY110118A/en

Links

Landscapes

  • Detergent Compositions (AREA)
  • Manufacturing Of Printed Wiring (AREA)

Abstract

AN INDUSTRIAL CLEANING PROCESS IN WHICH A CONTAMINANT COMPRISING SOLDERING FLUX AND/OR ADHESIVE TAPE RESIDUE IS REMOVED FROM A SUBSTRATE CONTAMINATED THEREWITH, FOR EXAMPLE, A PRINTED CIRCUIT BOARD CONTAMINATED WITH ROSIN FLUX, COMPRISING:(A)CONTACTING THE SUBSTRATE WITH A TERPENE-BASED CLEANING COMPOSITION WHICH IS SUBSTANTIALLY FREE OF WATER-SOLUBLE ORGANIC MATERIAL, FOR EXAMPLE, A SURFACTANT, FOR A PERIOD OF TIME SUFFICIENT TO SOLUBILIZE THE CONTAMINANT;(B)REMOVING THE COMPOSITION AND SOLUBILIZED CONTAMINANT FROM THE SUBSTRATE BY CONTACT WITH WATER HAVING A TEMPERATURE OF ABOUT 70?F TO ABOUT 140?F (BUT PREFERABLY LOWER) FOR A PERIOD OF TIME OF NO LONGER THAN ABOUT 10 MINUTES TO PROVIDE A SUBSTRATE HAVING A CONTAMINATION RATING OF NO GREATER THAN ABOUT 14 MICROGRAMS NACI EQUIVALENT/SQUARE INCH (MIL-P-28809A), AND TO THEREBY FORM A MIXTURE COMPRISING THE COMPOSITION, CONTAMINANT AND WATER; AND (C)SEPARATING THE WATER FROM SAID MIXTURE, THE SEPARATED WATER BEING SUBSTANTIALLY FREE OF WATER-SOLUBLE ORGANIC MATERIAL AND HAVING A CHEMICAL OXYGEN DEMAND OF NO GREATER THAN ABOUT 1,000 PPM.AND ALSO A CLEANING PROCESS UTILIZING A CLEANING COMPOSITION COMPRISING A MAJOR AMOUNT OF A MONOBASIC ESTER TO CLEAN SURFACES THAT ARE CONTAMINATED WITH AN ORGANIC RESIDUE.
MYPI92000895A 1991-11-29 1992-05-25 Cleaning process MY110118A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62050091A 1991-11-29 1991-11-29

Publications (1)

Publication Number Publication Date
MY110118A true MY110118A (en) 1998-02-28

Family

ID=79909532

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI92000895A MY110118A (en) 1991-11-29 1992-05-25 Cleaning process

Country Status (1)

Country Link
MY (1) MY110118A (en)

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