| 释义 |
montan wax|ˈmɒntən wæks|
Also Montan wax.
[f. L. montān-us of or belonging to a mountain + wax n.1]
A hard, brittle substance that is extracted from lignite by means of benzene or other solvents, consists mainly of higher fatty acids and their esters, and is used in making polishes and as an electrical insulator.
1908Chem. Abstr. II. 2875 Montan wax is obtained by extracting brown-coal by benzene and purifying the product by repeated distillation with superheated steam. 1920Times 4 Feb. 11/3 Another by-product recovered from this particular lignite..is Montan wax... This mineral is very valuable on account of its high melting point, and for this reason it is unequalled in the manufacture of high-grade boot polishes, gramophone records, and other articles. 1936Bone & Himus Coal v. 55 The raw coals contain..anything up to about 7·5 per cent. of ‘Montan wax’ (m.p. usually 78° to 88°). 1947Times 23 June 2/7 The shortage of mined coal, together with the value of montan wax, has given added value to lignite. 1969R. F. Lang tr. Henglein's Chem. Technol. 411 Montan wax is obtained from strongly bituminous, dry coal by extraction with benzene or benzene-alcohol. |