Document YD54GJv4kk0dEvv4b78d7LqjD

N^KO,,,., M.MO T E K PJ H C 0 CHEMICALS, INC. VTo R. L. Horvath At Flemington date February 4, F ROM SUBJCCT F.W. Kanzler Micro scopic Analysis Film AT Burlington of a Becton-Dickinson copy to C.H. H.B. W.W. H.R. G.W. /File Brower Carr Ileal Horton Leach Microscopic analysis of the subject film showed the following results: 1. Gels (Agglomerates of Fused Polymer, Figure 1) Initial inspection of the film showed an unusual amount of small gels. When examined under the microscope, these gels showed no fibrous contamination. Furthermore, all of the polymer within the gels was completely cured (fused) (Fig ure 1, upper left hand corner). No explanation can be given, at present, as to how these gels are formed. While no cured draw down of 1730 resin yielded gels of this nature, a draw down of an 0565 lot contained similar gels. A suspicion that these gels are formed by mixing of DHW-80 latex with sodium lauryl sulfate latex is being investigated. (The com plaint lot was blended off with 1755> while the 0565 lot was preceded by a 1738 lot.) About 80$ of the "gels" observed were of this type. 2. Fibers (Agglomerates Formed by Fibers, Figure 2) About 20$ of the observed "gels" were caused by fiber contam ination. The make-up of the gels is similar to those pre viously observed during past investigations. 3. Gels (Agglomerates of Unfused Polymer, Figure 3) About four (4) gels in the film were formed by unfused poly mer. In addition to the above, it was noted that the film was embedded with a relatively large amount of dust particles. Attachment. FWK/jt 'b-td W F.W. Kanzler COLORITE 013750 B cTOtf- X) J o W FilH i"'`Art,>Ai< 'r vas' r> . V ,' FGt\ Ce.u F^ x -v* A 'j ioox UttFoi&o Cist. r,1, i <5 /Os>^ COLORITE 01375X