 | Thomas Hancock - Rubber - 1857 - 344 pages
...of vulcanised or converted caoutchouc, we sometimes take a solution of unvulcanised or unconverted caoutchouc, and mix sulphur with it in the proportion...the caoutchouc, the solvent, and the sulphur, may be heated in the same manner without previously dissolving the caoutchouc : but we prefer employing... | |
 | Patent office - 1859 - 736 pages
...cuttings or waste vulcanized or converted caoutchouc, take a solution of unvulcanized or unconverted caoutchouc, and mix sulphur with it, in the proportion...turpentine, for a period varying from 15 to 30 minutes, and a somewhat similar result is obtained ; or the caoutchouc, the solvent, and the sulphur may be treated... | |
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... solutions may be diluted, if desired, with oil of turpentine or coal naphtha ; they then become a good and elastic medium for mixing and combining colours. Instead of operating upon the cuttings or waste of vulcanised or converted caoutchouc, we sometimes... 