Document g2Q3LqwaxJOwq5jLqvwe6w62q

CORRCSRONOCNCS $JU. CCV * Westinghouse / ^ c u'/ prom Hampton Works / oat. May 10, 1957 SUBJECT Discoli Inks S Mr. D. E. Baldwin - Hampton Works - cct Mr. W. H. Island - Hampton Works Manager Mr. A. E. Anderson - Hampton W^ SalesL Department Mr. R. &. Hetrick - Hampton - Engineering Department As you are aware, we found that the inks used to print the Moore McCo: ened when tested for color fastness accordin Ications in the Fade-O meter. On this date, of our results and requested that they for color fastness. On May 10, Mr. Polio aad stated that they had also encountered after the color fastness test. Their sAtoles pared using American Qyanamid's Cymel 1&$ melsraop re e samples printed ty Decotone were made uaing/ifcka ^con; titanium dioxide (UO2) pigments, It was our\^2lef, theirs also, that the blue-gray darken- iples caused by the discoloration of the UO2 sed in^he inks. Mr. Pollock stated that they were >cess br evaluating an ink for this application that d b&a 50-50 mixture of Ti02 and ZnS. It was found by ^au^n ink using only ZnS pigment did not have the essary for these patterns. ' <F Mr^Po^lbck also stated that they had been using inks for some h^ybntaining HO2 pigments, and; to his knowledge, they had ^ encountered any serious field complaints. I advised Mr. Pollock this product was sold to meet HEMA requirements; therefore, could not use this print as is. As a matter of information, we have evaluated these prints using American Cyanamid's Cymel l8 and Monsanto's Melmac 81U, and the same discoloration was noted on both series of samples. Since Decotone used American Qyanamid's Cymel U05, we have the evaluation of three melamine resins with the same results. I believe this should rule out any possibility that our process is affecting the stability of the inks. 000052 Mr. D. E. Baldwin -2' May 10, 1957 Our Fade-meter was checked for compliance with the NIMA re quirements. It vas found that we met all requirements except the equipment was running approximately 307 too high, /^kjing the investigation of the discoloration of TL02 and Battelle Institute, it was found that temperature dj^^jC&ct^ the discoloration of Ti02, but, according to their^rhsuZts, was a yellowing in the paper. Since all was a blue-gray darkening, the effect of temperature' w slight in these tests. This appears to be ffflnp- tion since Decotone duplicated our result The corrective action now lies with Mr/ the designers. From our Engines oitted are not acceptable. one, and the prints as sub- VCH/ch Engineering Department 00000053