goudron

plural goudrons

1. Tar, especially boiled tar.

   In some parts the oil soaks through river alluvia and forms small goudron deposits.

   1906, The Petroleum Review ..., page 156

   5 more examples

   The manner of laying down the asphalt is as follows : -A fire is first lighted under the boiler, then the goudron is put in.

   1887, Institution of Civil Engineers of Ireland, Transactions, volume 17, page 213

   About 50 kilos of goudron from Romany oil were carefully cracked at about 400 °C., partly with steam an partly without. In the latter case, dark paraffin wax was obtained from the higher fractions, […]

   1900, Society of Chemical Industry (Great Britain), Journal of the Society of Chemical Industry, page 652

   He is unable to select his crude, and often has to be satisfied with a worse residuum; nor is he in a position to dispose of his goudron as the latter, and for all these reasons, such a refinery is compelled to secure as high a ...

   1902, The Petroleum Review, with which is Incorporated "Petroleum", page 671

   The carbon electrodes rest on a layer f of goudron, which is tar boiled or evaporated to a density greater than that of ordinary tar.

   1903, Great Britain. Patent Office, Patents for Inventions. Abridgments of Specifications, page 75

   For this purpose, the goudrons are diluted with a certain quantity of water, so as to reduce the acid to 50 °B.; at the same time, the mass is energetically blown with air, in order to separate and to bring to the surface of the ...

   1909, Petroleum Review