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POLYMERS are mixtures of compounds of similar chemical composition and of high molecular weights. Naturally occurring products such as rubber, cellulose, proteins and shellac, extracted materials such as asphaltic bitumens, and synthetic products, produced by a polymerisation process, are all...
The discusssion was opened by Mr. A. T. Wilford London Transport Executive who referred first to Mr. Towle's statement but the evidence is not vet sufficient to indicate whether heavy duty oil would show up better than those of the premium type in every day automobile use and asked for the...
A NEW oil refinery is now in production at Altona, Australia, with an output capacity of 15,000,000 gallons per annum. It is producing lubricants for industrial purposes, bitumen for road making, distillate fuel oils and petrol. It is claimed that sufficient lubricating oil will be produced in...
In recent years, considerable advances have been made in the prevention of leakage of liquids and oils past moving surfaces. Leakage is the most common source of complaint with regard to hydraulic machinery, in which field the authors have had considerable experience. The subject covers a wide...
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