Document Exd1Oe3q2arJRY1jBwR71dEZ0

CC: A. A. Brizzolara * ,3 Jackson //R. Qedd/S. C. Harris V^* B. Morton/B. Amoul NEWARK, NEW JERSEY FEBRUARY 21, 1962 P. D. GRAHAM PIGMENTS WILMINGTON Jhfjm f**** /y Y-662-D This is to confirm our conversation today. The quality of the last run of Y-662-D was considerably improved with respect to darkening versus standard. Two lots, 79834 and 79833, were practically equal to standard in this respect, in addition* the variables applied to correct the darkening have also resulted In an appreciable improvement in lightfastness. We would recommend bringing these lots to the attention of IPX, Chicago, so that they may confirm this improvement. AS you suggested. Production Control is submitting pre-shipment samples to Elizabeth for their approval. The material is being put aside for subsequent shipment to Chicago. Please take the necessary steps to advise Chicago to check the Improved performance on this material. RAHxmao a TECH N39925