Polysar Ltd

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

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... 

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

Large-scale manufacture of butyl rubber started during World War II, in the scope of the U.S. Government rubber-procurement program, and the actual process is essentially similar to the historical one [9]. Bromi-nated butyl (BIIR) was introduced in the 1950s by Goodrich Chemical Co. [54-56] but substantial commercial development occurred only in 1971 when the Polysar Ltd continuous and economic manufacturing process based on elemental bromine came onstream [57]. Production of chlorinated butyl (CIIR) was introduced on a commercial scale by Exxon Chemical in 1961. 

Urban. P. C. (1980). Polysar Ltd.. Canada. Paper presented at 54th CoUoid Surface Sei. Symp.. 

Folysar Rubber Technology Guide, Technical Publications Department, Polysar Ltd,... 

Henderson, J.F., Polysar, Ltd., South Vidal Street, Sarnia, Ontario, Canada N7T 7M2. 

Polysar Progress, Polysar Ltd, Canada, March-April 1977, p. 1. 

Commercial production of uniform, high quality, chlorinated butyl rubber was first achieved by the Exxon Chemical Co. in 1961. Since then, chlorobutyl rubbers have become firmly established in the rubber industry, and market demand continues to grow. Exxon and its affiliates were the only suppliers of chlorobutyl until 1979, when Polysar Ltd entered the market with competitive grades. 

There are now ten facilities, worldwide, producing butyl rubbers (Table 1) with an aggregate nameplate capacity exceeding 500 x 10 t. Esso, Exxon and the two Polysar plants include halobutyl rubbers in their product lines. Polysar Ltd is the only producer of crosslinked butyl terpolymers. 

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