Shawinigan Chemicals

The poly(vinyl acetal) prepared from acetaldehyde was developed in the early 1940s by Shawinigan Chemicals, Ltd., of Canada and sold under the trade name Alvar. Early uses included injection-molded articles, coatings for paper and textiles, and replacement for shellac. Production peaked in the early 1950s and then decreased as a result of competition from less expensive resins such as poly(vinyl chloride) (see Vinyl polymers, poly(vinyl chloride)). 

The calibration was established with polystyrene standards supplied by Waters Associates. The broad-distribution poly (vinyl chloride) standards were obtained from Arro Laboratories, Joliet, 111. Other PVC samples studied were obtained from Shawinigan Chemicals Division, Gulf Oil of Canada Ltd. For all GPC analyses, small sample loads (ca 4 mg) and slow rates ca 0.76 ml/min) were used to maximize resolution. 

Shawinigan Chemical, Ltd., Dept. Chem. Development, Report on Vinyl Crotonate. ... 

The first commercial application of olefin disproportionation was in 1966 87) Shawinigan Chemicals Ltd. at the Varennes complex near Montreal, Quebec brought onstream the Phillips Triolefin Process88) for converting propylene into polymerization-grade ethylene and high-purity butenes. Pilot plant development, reported by Johnson 89), showed that during a 20-hour test propylene conversion remained nearly constant at 43 per cent and efficiency of converted propylene to ethylene and n-butenes increased from 93 to 99 per cent. 

Shawinigan Chemicals of Canada developed the Fluohmic process around 1960. This process involves the reaction of ammonia with hydrocarbons... 

Fluohmic Process. The Fluohmic process was developed around 1960 by Shawinigan Chemicals of Canada. This process involves the reaction of ammonia with hydrocarbons (usually propane or butane) in an electrically heated, fluidized bed of coke. The reaction is ... 

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