Document Yrbogk6zO6evjxjKgQ9QzVwOE

12 HEW ASBESTOS PATENTS U.S. patents may bo purchased from The Commissions*'V.f Palonts, Wash ington, D.C. 20231, at a cost of SOc each, Photoprints.Vi non-U.S. patents may be purchased from the 'same source at a co,;' .of 30c per page. Remittance should be in coin, currency or check and'the number of the patent, name of the inventor and date of issue should be shown. Hrilish 1,219,027--An integral, single-phase com|x>sition for use in producing transparent structural articles comprises 88-9.2% by weight of a thermosetting vinyl chloride polymer and up to 12% of highpurity Chrysotilc asbestos, preferably of the Coalinga, California, type; N. .[. Setter; ttssigned to Union Carbide Corporation; January 13, 1971; '7 pages. Hriti.fh 1,223,286--A reinforcing filler for polymer compositions com prises 1-10% by weight of colloidal asbestos, 1-50% of an organic compound having at.least 2 iiolymerizablc cthylenic saturations and the balance polyethylene; assigned to Amicon Corporation; February 24, 1971; 7 pages. Canadian 866,09?--rA fire-resistant mastic consists of asphalt,. 7M Chrysotile asbestos, a solvent, exfoliated vermiculitc, boric acid, slate flour and unexfolialcd vermiculitc; the latter intumcsces under heat; R. E. Kooiis ; assigned to Monsanto Cotukany; March 16, 1971; 19 pages. ^ US. 3J$63?74--Use of up to 5% by weight of asbestos short fibers in alumina, chromium or silica refractories of the hydraulic-setting' gunning type; G. \V. Charles; assigned to A. P. Green Refractories Company; February 16, 1971; 2 pages. US. 3,567,47]--A filler composition for shoe soles consists of as-' hestos, a gelling agent, a resinous film-forming material, a solvent and particulate cork; G. F. Kable; March 2, 1971; 4 pages. US. 3,$67,481--A fibrous mineral pigment for paper, paints, plastics, etc., is formed by precipitating silica onto defiherized asbestos and treating the coated fibers with aluminum sulfate; \V. L. Craig; as signed to R. T. Vanderbilt & Company, Inc.; March 2, 1971; 6 pages. US. 3,$72J863--A com|x>sition for forming bearings in the form of wear rings comprises Grade 4 Chrysotile asbestos, a thermosetting phcnolformaldchyde resin, nitrile rubber and powdered graphite or other solid lubricant; W. S. Josephson; assigned to Greene Tweed & Company, Inc.; March 30, 1971; 4 pages. US. 3,$74,099--Lost circulation in oil well drilling operations is re covered by injecting a mixture of a relatively small percentage of long-fiber Chrysotile asbestos and high |ierccntagc of ground black walnut shells; J. N. Ryals & lb V. Randal); assigned to Pan American Petroleum Cor|x>ration; April 6, 1971; 9 pages. Page 42 ASBESTOS --June 1971