单词 | propylene |
释义 | propylenen. Chemistry. = propene n. ΘΚΠ the world > matter > chemistry > organic chemistry > hydrocarbons > [noun] > alkenes > straight-chained, by number of carbon atoms > three propylene1850 tritylene1857 propene1867 propanediol1894 1850 J. W. Reynolds in Jrnl. Chem. Soc. 3 114 It is this hydrocarbon..to which I propose to give the name of Propylene. c1865 Letheby in Orr's Circle Sci. I. 116/1 Propylene..,or the super-olefiant gas of Dalton and Henry. 1932 I. D. Garard Introd. Org. Chem. iii. 34 Secondary butyl alcohol..is made from butylene..just as isopropyl alcohol is made from propylene. 1959 Times Rev. Industry Feb. 57/1 Using the stereospecific catalysts developed in Germany by K. Ziegler, Professor Natta in Milan had succeeded in producing, from propylene gas, useful polymers which he characterized as isotactic. 1999 R. German World of Rubber (Brit. Rubber Manuf. Assoc.) 28 The lack of double bonds means that sulfur cannot be used to cure the simple ethylene propylene copolymer. Compounds propylene glycol n. either of two isomeric liquid alcohols, CH2(OH)CH(OH)CH3 and CH2(OH)CH2CH2OH; spec. the 1,2-glycol (the former), which has a wide variety of uses, chiefly as a solvent or carrier, as a constituent of antifreeze, and in the food, plastic, and perfume industries. ΘΚΠ the world > matter > chemistry > organic chemistry > alcohols > [noun] > dihydric alcohols or glycols > ethyl glycol glycol1858 propylene glycol1870 1870 H. E. Roscoe Lessons Elem. Chem. (new ed.) 370 Show the relation in composition existing between propyl alcohol, propylene glycol, and glycerine. 1951 I. L. Finar Org. Chem. I. xvii. 329 Lactic acid..may be prepared: (i) By oxidising propylene glycol with dilute nitric acid. 1995 Midwest Living Feb. 111/1 The sweet taste of antifreeze attracts dogs and cats. Newer brands..contain the ingredient propylene-glycol, which..is less toxic to animals, but still can be hazardous. This entry has been updated (OED Third Edition, June 2007; most recently modified version published online March 2022). < |
随便看 |
|
英语词典包含1132095条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。