Document pmvjbVJ0Q056nB7532D4v3Zej

roM dn.ieoi.5 ncv, oct wr* r-r- ; .. ; ; uJ ; - -vi -- - ; \v' ; fm ! Am ' 'r . V. >ftgg Ajy ---- 2 a w ^ ^'ta \jjt. TO Dr. A. E. Ardis AT Assonet DATE November 19, 1971^ ^--.--r--4^ fhol (Virginia PittsJJ (T) AT New Haven copy to R. Gerry subject^olVVINYL CHLORIDE^Cun^nt Aware^esP D. Goodman C. H. Hofrlchter NHTTS7T-30 Supplement ~|y -- F. J. Honn ProjecC8625-004~7 M. Lapkin (2^ J. H. Ludes - cU&s-ei^ Cj-i C. W. MacMullen R. E. Maizell M. A. Raymond D. Ryker Attached is our most recent collection of patents and articles on T. R. C. (4) polyvinyl chloride. The last page of this report contains references to CPVC. As in the past, we will obtain copies of abstracted articles or full copies of those In which only the first page has been included as you request them. Prepared by /-Let. Virglhia Pitts O \ Accepted by R. E. Maizell VCP:bm Sources: v OLIN-RECEIVED DEC 8 1971 TECH. INFO. SEflV. NEW HAVEN British Plast.cs - August 1971 Business Periodicals Index - September 1971 Chemical Abstracts Condensates - 75, ^8-12 f 19711 Chemische Industrie Int'l - ^2, 197F Derwent Central Patent Index, Plasdoc Section - Aug. 6 - Sept. 17, 1971 F&S Index of Corporations and Industries - Sept. 1971, ^26-38 Furniture Design and Manufacture - August 1971' Modern Plastics - September 1971 Plastics & Rubber Weekly - Aug. 6 -Sept, 3, 1971 Plastics Technology - September 1971 OLI 7534 Plastics World - July, August, September 1971 Post J - July-Sept. 13, 1971 Reader's Guide to Periodical Literature - Oct. 25, 1971 wmv file this cofSPE Journal - Sept. 1971 Trends in End-Use Markets for Plastics - Auo.-Senf 1071 ONE TEAR. OTHER- PLASTICS & RUBBER WEEKLY: August 13,1971 LZZJ TIi3 F.rtids which appeared in Plates 2nd Rubber V/osidy on Juiy 16, 1971, entitled `Plasties Disposability Considerations', con tains a Cable which may be mislead ing in that it gives the impression that when pvc is burned, phosgene is evolved. In fact, recent publications which have, appeared in the United States*. Switzerland and the UKt reporting work on this subject, state that within the limits of the analytical methods currently available phosgene cannot be detected in the gases evolved from pvc when it is burned. There are some typographical and other errors in the tent, the most important being that which refers to the Swedish study of the amount of I-IC1 released from garbage (p 21 col 2). The part of the relevant paragraph should read `the amount of HC1 released from Earbage containing large amounts of pvc is low compared with the amount of sulphuric acid (Hs50`) released when fuel oil Is burnt*. No mention of KC1 released from the burning of fuel oil is made in the Swedish report \Y. C. FERGUSSON, TS Co-ordination manager, ICI, Welwyn Garden City, Herts. * Boettner ct al, J. of Polymer Science Vol 13 pp 37701 (ir:3). t Woolley, W. D, and Wadley, Ar.n I.; Joint Fire Research Oregnieation Note FR THE British Plastics Federation has released figures showing that the sales of Pasties piping which increased by over U per cent in 1969, put on an even larger increase of over 23 per cent (from 49,095 tons to 69,430 tons) in 1970. / figure are increases in polyethylene and pvc piping production of ^3 per cent and 41 per cent respectively. ` By far the most significant increase -- 61 per cent -- was in pvc piping to BS 3o0a, which is used in pressurised water meins for portable water distribution. Water authorities' in par ticular* it seems, are now beginning to realise that pvc p'ning to US S-05, wnich is -resistant to all normal forms of corrosion -- the cause of 80 per cent of all water-main bursts -- does provide a realistic and economical long term alternative to tradi tional piping materials. 1970 sales of pvc pining for potable water distribu tion were 61.3 per cent higher than in 3 CCD, increas ing from 18,010 tons to 20,3-13 tons. This is the largest percentage increase evsr recorded and contri buted to a more than three fold rise over the last four years. OU 7535 Darvic riKid pvc sheet, manufactured by Tci Has solved a vandalism problem for one local authority. The problem was that two out of. every twelve lighting fittines in a pedestrian under pass were being broken every week by vandals. Faced with this problem, the local authority intro duced light covers made from Darvic. That decision was three years ago and since then the covers have resisted all attempts by vandals to break them. OSiHJiiiflipg? A SELF-DESTROYING plas tics bottle is claimed to be in sight, according to a re port from Massachusetts. The bottle, developed by blow moulder Hilton, of Natick, Mass, is made from a three-layer plastics sandwich. The thick centre-layer is of water-soluble material (probably polyvinyl alcohol) and is protected on both sides by thin insoluble layers (probably pvc). The centre material provides the neces sary structural strength and the facing films protect it When the container is no longer required, the user just scratches the surface film in a few places.