Document 0qZkmn1prjYjQmXdK154aeq6J

I i, (-.l, U . V I'j 1 L L o. .?<. , Cu,iy COtM^cS^CtM^kiNkCk RECEIVED atOvv JUL 051974 R. N. WHEELER7JR: k * ^ i w/*>Ji P. C. 30X SSo1., 5GG ChAi<-STG.\, WS7 V.xGi.NiA ^ ^ ^ R. M. Arnold, 515 R. A. Bleidt, 511 G. P. Bigelow, NYO Mr . M . E. Eisenhour, 515 R. E. Gulick, NYO C. J. Haines, 514 R. J. Hanna, 511 ___ G. F. Tacquard, 515,,^--- R. N. Wheeler, <611"* W. E. Whitehurst, 511 Dole July 2, 1974 Or.fjMrki.n.j Dx. j;. Research and Development i 7 VCl Mdnpmer in ( Resins:\ ASTM Study Gentlemen: The ASTM task group studying methods for quantitative determination of VC1 monomer in PVC resins held their initial meeting on June 26. Gas chromatographic methods were submitt d and the essentials of these procedures were summarized in th attached sheet by the task group chairman, Mr. Ed DeCapita of B. F. Goodrich. These methods used a solution of the vinyl resin in either 1HF (UCC method) or in dimethyl acetamide. The initial round robin study will include 3 homopolymer resins (2 to contain ~10 ppm residual VC1) to be provided as solid resin and as 5% solution in THF and dimethylacetamide. Methods provided by Goodrich and Dow will be investigated in the initial study. Approximately 18 laboratories plan to participat . On the basis of the discussions it is concluded that the current UCC procedure is technically sound and capable of detection of VC1 at a level equivalent to the methods used in the industry. Hie Goodrich method, which will be obtained soon, is being Installed to monitor production at all the Goodrich plants: the output is handled by a computer. At the moment, we see no advantage to this system over the UCC procedure. The Dow system uses a "silicone" column which may provid a satisfactory approach for the definition of vinylidene chlorid in the presence of water. This column will be investigated. UCC 068436 -2 - / We plan to participate in these round robin studies and will promote the evaluation of vinyl chloride-vinyl acetate copolymers in subsequent investigations. * JJB:noh ucc 068437 t RVCH IN POLYVINYL CIILORI JK S'lHMART OF ANALYTICAL PROCEDURES Cn*tiyr Flmt4M Column Type 1/S" 0D X 6' S.S., Poropek S, 80/100 Onion Carbide 1/8" OD X Poropek Q Goodyear 1/8* 00 X 22' S.S., 10* OV 225, 80/110 Chrom. W-HP 01 In 1/8* OD X 30' S.S. 23* UCON SO HB 5100 70/80 Chrom. V-HW Dow 3mn ID X 20* Olaes, 10* OV-17, 100/120 Chrom. W-HP Diamond Bniroyal 1/8" X 12* S.S., 10* OC-98, 80/100 Chrom. H-HP 1/8" OD X 2m, IQS C-98 80/100 Chrom. W-HP PPO 1/8" OD X 2w, 10% W-20n, 60/80 Gaapack F 1/8" 00 X 2a, 15* Aplexon L, 80/100 Gaachram. P BP1 1/8" XT* 1/8" X 2', 80/100 Fni opak QS Polymer Solvent THF Polymer Cone. * 5 InJ. Det. Col. Sample Temp.C Tcmp.C Tep.0C Siie pi -- -- 150 3 Analyala Tima -- Calibration Type `bt THF 4 -- -- 150 1 -- Ext. THF 5 150 150 60 15 -- Int. 2-Hethyl Pentane THF 1 75 300 50 1 -- Ext. DHPtTHF MAC 5 125 MAC ' 3.6 200 260 \ 80 70 2-20 THF 5 THF 10 150 260 liO 10 110 280 105 -- bt. -- bt. -- bt. bt. DHAC 5 200 250 HiO 10 15" , Ini. Pentane BF ucc 068438