capacities of up to tonnes. ships specializing in carrying very heavy loads, however, are invariably equipped with special derrick systems such as the stulken (fig ). these derrick systems are capable of lifting loads of up to tonnes. although crane motors may rely on pole-changing for speed variation...
capacities of up to tonnes. ships specializing in carrying very heavy loads, however, are invariably equipped with special derrick systems such as the stulken (fig ). these derrick systems are capable of lifting loads of up to tonnes. although crane motors may rely on pole-changing for speed variation...
capacities of up to tonnes. ships specializing in carrying very heavy loads, however, are invariably equipped with special derrick systems such as the stulken (fig ). these derrick systems are capable of lifting loads of up to tonnes. although crane motors may rely on pole-changing for speed variation...
(ii) polyesters the production of polymers such as the polyester terylene use methanol as the original feedstock. methanol is used to make terylene in two ways. one is as the alcohol to make the dimethyl ester of benzene- -dicarboxylic acid (terephthalic acid). the other is to make ethanoic acid (acetic...
means that it is used during the production of many other chemicals, whereas some of the uses of nitrogen and the rare gases depend on their inertness. uses oxygen the largest user of oxygen is the steel industry. it is also used in the manufacture of other metals, notably copper and lead . it is more...
palm, sunflower, rapeseed and soya bean oils. margarine margarines are based on blends of oils and fats, the proportions varying between products. the composition of margarine is controlled by law. in the uk it must contain between - % fat and must also contain mg of vitamin a and - mg of vitamin d...
and phenol, in the proportion of : , are reacted under acidic conditions, a resin (often known as a novalac resin) is produced, where n = to . with higher proportions of methanal and with the -position vacant, branching is possible, the methanal providing additional -ch - links. on heating a resin is...