Document G66x9oLn3XyJjOQ552Zqn5wYn

STATUS REPORT VINYL CHLORIDE - ETHYLENE COPOLYMER RESIN EVALUATION OF EXPERIMENTALLY PREPARED LOW RECEIVED JP 131967 MOLECULAR WEIGHT POLYMER Author: A.W. Conkling P.T. McCoy Date: December 21, 1966 Project No.: 224A90 Supervisor: W.H. Bauer File No.: SUMMARY The comparative evaluation of a small sample of an experimentally prepared vinyl chloride ethylene (0.8 percent ) copolymer indicates unique processing character istics not currently available in conventional Union Carbide homopolymers. The resin, as produced by the suspension process, and at the molecular weight level of QYSA processes easier than QYSA and QXOH-7, is in the range of VSKK, and is a competitive counterpart of Cumberland's 420 and 470 (propylene modified vinyl resins). The resin exhibits ex cellent dry blending and preblend flow characteristics not generally shown for homopoly mer resins at this low molecular weight, A QXOE-7 type of polymer should find industry acceptance in the following application areas: Flooring Rigid and non-rigid calendered film and sheeting Rigid and non-rigid extruded film and sheeting Injection molding Blow molding Processing aid for calendering, extrusion and molding The resin exhibits unique and novel properties that should command a premium of a few cents over conventional homopolymer counterparts. Manufacturing specifications for this type of a product are suggested. Union Carbide Corporation - Chemicals Division Research and Development Department Tarrytown, New York 2- - DISCUSSION A small sample of experimentally prepared vinyl chloride - ethylene copolymer resin, QXOE-7 (QEX-1259), has been evaluated. The fusion and dry blend properties were the primary properties assessed. The test results are reported in Table I and Figure I. The QXOE-7 resin exhibits a satisfactory dry blending performance not generally exhibited by homopolymer counterparts at this low molecular weight. This performance is consistent with the rapid drying characteristics of the higher molecular weight "0" resins and is fully equivalent to the good dry blending characteristics of the Cumberland 400 vinyl chloride - propylene resin series. The dry blend flow of QXOE-7 is excellent. The combination of low fusion and excellent pre-blend flow are character istics that several flooring customers have expressed as most desirable for "grouting" applications. The fusion characteristics are the lowest of any UCC "0" resin examined to date. The average melt characteristics as compared to VSKK, QYSA, QXOH-7 and the Cumberland 400 series are summarized in the following table: Comparative Average Melt Characteristics of QXOE -7 Unplasticized Plasticized RESIN (30PHR DOP) VSKK QYSA QXOH-7 6 % lower 16 % lower 20 % higher 7 % lower 25 % lower CUMBERLAND 401 47% lower 31% lower 40S 16% lower 15% lower 420 Same 8% higher 470 12% higher 21% higher The average melt characteristics in plasticized compounds of QXOE -7 are between those of Cumberland 420 and 470 and in terms of compositional factor (vinyl chloride times inherent viscosity) is closer to 470 than 420. The average melt characteristics of VSKK similiarly approach those of 420. The apparent melt viscosity of QXOE in a rigid formulation is equivalent to that of Cumberland 420. Conclusions - QXOE-7 vinyl chloride-ethylene copolymer resin is a near competitive counterpart of Cumberland 470 and 420 propylene-modified vinyl chloride resins and offers near comparative melt characteristics in both rigid and non-rigid end -use applications. UCC 039444 -3- The following property levels and limits are suggested as targets for the manu facturing specifications of this potential product: Vinyl chloride, % Ethylene, % Inherent viscosity, ASTMA Heating loss, % Apparent density, lbs/fr* Dry blend trial, minutes Sieve analysis thru 40 mesh thru 2 00 mesh median, microns 99 1.0+ 0.2 0.61 to 0.65 0.5 max 28 to 32 4.0 max 100 5 max ISO to 200 AWConkling PTMcCoy/lw Attachments 1 Table 1 Figure (7 uee 0394+ TABLE I EXPERIMENTAL VINYL CHLORIDE - ETHYLENE COPOLYMER RESIN CHEMICAL AND PHYSICAL PROPERTIES QXOE -7 QEX1259 Typical QYSA 5 QXOH-7 Blend 1 Typical VSKK Vinyl Chloride, % Inherent viscosity, ASTM A Ethylene, % Apparent density, lbs/ft^ Resin flow, sec/400 cc Plasticizer sorption, phr Initial color mill test Hard resin particles, ft^ 17.5 mil 10 Clear fisheye test Torque rheometer Dryblend trial, time Time (min )/temp. C Apparent melt viscosity, m-g/sec/C 0 PHR FLEXOL DOP 20 " 30 " 40 " 60 *' Fusion temperature, C O PHR FLEXOL DOP 30 " Sieve analysis, thru 100 mesh % " 200 " % median, microns 99 0.64 0.84 31 3.3 90 93 80 2240 10 + 3.4/79 1600/174 1510/148 1150/144 815/140 505/137 110 90 16 1 177 100 0.62 0 32 5.9 80 85 100 1500 8 99 0.78 1.0 32.5 4.8 95 102 40 1150 8 does not dry 1900/178 1605/149 1150/146 980/142 560/138 108 -- 85 25 110 4.8/81 2025/179 1720/151 1480/148 1090/144 690/140 106 109 -- 7 160 89 0.72 0 39 3.5 50 1700/175 1295/144 905/141 640/139 325/135 94 90 70 8 120 FIGURE I VINYL CHLORIDE RESINS APPARENT MELT VISCOSITY (Torque Rheometer) 20 15 10 5 i ) i----------------------------->---------------------------- 1---------------------------- f-- 10 20 30 40 50 60 FLEXOL DOP CONCENTRATION, PHR ucc 039447 f Distribution Mr. J. Anthony Dr. F. E . Bailey Mr. W. H. Bauer Mr. A. J. Costantin Mr. F. D. Dexter Mr. D. L. Engle Mr. J. F. Erdmann Mr. C. R. Field Mr. N. R. Gimler Mr. G. G. Himmler Mr. S. Krumm Mr. D. E . Richardson Mr. H. J. Rutherford Mr. J. R. Wilkinson Mr. E. R. Weidlein, Jr. Mr. N. R. Wheeler Dr. N. L. Zutty ucc 039448