| 摘要 |
PURPOSE:To decrease or remove the odd smells and malodors specific to sulfur generated at the time of opening a door after polymn. and at the time of cutting, polishing and lapping of the lense. CONSTITUTION:At least one kind of aroma imparting compds. among the aroma imparting compds. of 2-acetyl-1,2,3,4,6,7,8-octahydro-2,3,8,8-tetramethyl naphthalene, 3-oxa-9-ethylidene-tricyclo-(6,2,1,0)-undecane-4-on, alpha-methyl-3,4- methylenedioxy hydrocinnamic aldehyde, 6,10-dimethyl-3-oxa-9-undecenal, 1,2- benzopyrone, trichloromethyl phenylcalvinyl acetate, 2-methyl-4-(2,2,3-trimethyl-3- cyclopentene-1-il)-2-butene-1-ol into the sulfureous plastic lens having a crosslinked structure formed by polymn. of a sulfur-contg. polyfunctional compd. |
