| 释义 |
triacetate Chem.|traɪˈæsɪteɪt|
[f. tri- + acetate.]
†a. A compound in which an acetate group is combined with three atoms or molecules of a base. Obs.
1860Scoffern Orr's Circle of Sciences, Chem. (new ed.) 467 The most important is the tris or triacetate [of lead].
b. A compound containing three acetate groups in the molecule; spec. cellulose triacetate, in which acetate groups replace hydrogen atoms in (notionally) all three hydroxyl groups in each constituent glucose molecule; a man-made fibre made from this.
1895C. F. Cross et al. Cellulose i. 35 Heated at 180° in a sealed tube, in the proportion by weight of 1 of cellulose to 6 of the anhydride, the cellulose is converted into the triacetate. 1921Jrnl. Soc. Chem. Industry 31 Jan. 8t/2 If the ratio of chlorine to sulphur dioxide be nearer to unity then the product is mainly cellulose triacetate. 1956W. J. Roff Fibres, Plastics, & Rubbers 25 A method of preparing fully acetylated triacetate possessing exceptionally good electrical properties. 1960Which? Jan. 19/1 Triacetate is very similar to ordinary acetate, but not so soft to handle; it will take permanent pleats and creases. 1978Lancashire Life Mar. 113/3 Each item can be bought separately—the triacetate and nylon shirt at about {pstlg}13.50. |