The metallic contamination on the wafers was evaluated by using a total reflection X-ray fluorescence spectrometer TXRF according to the method published by P. The stripper composition of claim 11 wherein said amino acid is selected from the group consisting of tricine, bicine, 3- 2,4,5-trihydroxyphenyl -DL-alanine, and DL-threo-3,4-dihydroxyphenylserine. Another object is to provide a solution for stripping modified epoxy-phenolic coatings that is easily handled without danger and is not unduly toxic. Kind code of ref document: Ryertex - High Performance Phenolics. Reclamation of sand is possible.
The SiC production granules that were used contained phenolic resin. Alkaline strippers are slower acting than the other types of materials, the time being dependent upon the type of resin and the degree of polymerization. Scrub it down with a little scotch bright under some water and you should get the strong chemical smell of Phenol. Federal State International coming soon. The determination of phenolic resins in fibre-and particleboards. On the other hand, underbaking results in incomplete polymerization.
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On examination no visual defects or distortions could be discovered. Unused portions of HumiSeal products must be disposed of in compliance with applicable environmental regulations. Nickel sulfate is also suitable and if used, no diphenylamine is necessary. Bakelite B was produced at a further stage of reaction and was gelatinous when hot, solid when cold, but no longer entirely soluble. From industry, it was understood that flow rate has an impact on pyrolysis. Other objects and the many attendant advantages of this invention will be readily appreciated as the same becomes better understood in connection with the following description and examples by which the invention is illustrated but not limited. The mould making costs for casting were much lower than for producing compression or transfer moulds, and the quality of the finished product, because of the inherent nature of the casting resin, was much higher.