Polysar

Polysar North America Vinjl butadiene rubber T aktene Li—alkyl... 

Films deposited from compounded nitrile latices can be vulcanized with sulfur and accelerators, assisted by relatively high levels (ca 4.0—5.0 parts /100 DRC) of ziac oxide. For other uses, nitrile latices are sometimes used ia unvulcanized form. An appHcation of medium soHds nitrile latex, eg, Nitrex J-6849 and Polysar 845, has been ia preparation of oil-resistant foams for lubricants ia heavy-duty beariags, such as railroad-car journal boxes. 

Bromobuf I Handbook, Technical PubHcations Section, Technical Development Division, Polysar Ltd., Sarnia, Canada. 

Highly saturated nitrile elastomers (HSN) have become available. These mbbers are prepared by (nearly complete) hydrogenation of the nitrile mbber copolymer. The resulting product has better heat and oxidation resistance than conventional nitrile mbber but still retains some double bonds for vulcanization. Trade names for HSN are Zetpol (Nippon Zeon), Therbar (Bayer), and Tormac (Polysar). HSN has been used, and is being developed, for oil field chemical, automotive, power station, aerospace, military, and industrial appHcations (66). 

A partially cross-linked, isobutylene—isoprene—divinylbenzene terpolymer containing some unreacted substituted vinylbenzene appendages is commercially available from Polysar Division, Bayer AG. Because of the residual reactive functionality, it can be cross-linked by peroxides that degrade conventional butyl mbbets. It is employed primarily in the manufacture of sealant tapes and caulking compounds (31). 

A. Rawlinsonand N. Djuricis, Polysar Technical Liter ature, Polysar Technical Centre/Jugoauto, Sarajevo 8-10 Nov., (1988). 

Cariflex, Copo Duradene, Soloflex Neoprene, Denka Nipol, Krynac, Paracril Buna EP, Royalene, Keltan Exxon butyl, Polysar Butyl Elastosil, Silopren Budene, Taktene, Diene, Intene HyTemp, Europrene Hydrin C... 

The logical approach to problem solving for rubber analysis at Polysar Ltd was described by Chu [73] (cf. Schemes 2.4 and 2.5). Systematic analysis involves sampling, elimination of interference and measurement. Methods employed include chromatography (GC, HS-GC, HPLC, SEC, IC), spectroscopy (AAS, UV/VIS, IR, NMR), MS, microscopy and thermal analysis. The specific role of each of these techniques for the analysis of rubber compounds with or without... 

Typical applications at Polysar included the quantification of residual solvents and monomers in finished rubber products (e.g. styrene in SBR), quality control of feedstocks such as benzene or ethyl benzene as impurities in styrene monomer, and the analysis of samples collected from environmental monitoring programs. 

Hoechst Corporation, Ashland Chemical Company, Cabot Corporation, Dow Chemical U.S.A., Dunlop Research Centre, E. I. du Pont de Nemours Company, The Firestone Tire Rubber Company, The General Tire Rubber Company, The BF Goodrich Company, The Goodyear Tire Rubber Company, Monsanto Company, Polysar Limited, Shell Development Company, 3M Chemicals Division, and Uniroyal Chemical Division. 

Fig. 8-5 Polysar Ltd. s styrene monomer plant af Sarnia, Ontario...

PI 2 and PI 4 were received from Killian as partially cured resins. SBR Is Polysar XE-432 styrene-butadiene latex. 

Many contributed to the success of the symposium. The executive and members of the Macromolecular Science Division thank the following firms for fiscal support Polysar Limited Abitibi Paper Company Reichhold Limited Xerox Research Centre of Canada Limited Varian Associates of Canada Glidden Company Domtar Limited DuPont of Canada Shell Canada Gulf Oil Canada and the Dunlop Research Centre. A special vote of thanks is extended to the speakers at the symposium and to the authors for their excellent presentations and for their cooperation in putting it together. J. Comstock of the American Chemical Society showed understanding and patience in bringing this volume to print. 

Polysar North America Vinyl butadiene rubber Taktene Li— alkyl... 

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