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    • 3. 发明授权
    • Process for synthesizing allyl carbonates of polyhydric alcohols and
their derivatives
    • 合成多元醇及其衍生物的碳酸烯丙酯的方法
    • US4508656A
    • 1985-04-02
    • US374331
    • 1982-05-03
    • Ugo RomanoGiuseppe Iori
    • Ugo RomanoGiuseppe Iori
    • C07C69/96C07C68/06C08F18/00
    • C07C68/06
    • The application relates to a process for synthesizing carbonic allyl esters from polyhydric alcohols, which are reacted with diallyl carbonate in the presence of a basic catalyst, which can be chosen from sodium hydroxide, sodium carbonate, sodium alcoholate, organic bases or basic ion exchange resins.The final products obtained differ according to the ratio of the components of the starting mixture. Thus, in the case of diols with a diallyl carbonate/diol ratio greater than or equal to 10, the resultant product is constituted by the bis allyl carbonate of the diol together with a quantity of less than or equal to 10% of oligomers represented mainly by dimers. If the ratio is less than 10, the percentage of oligomers rises until, in the case of an approximately stoichiometric ratio, it reaches a value close to 70% of the reaction product.
    • 本申请涉及在碱性催化剂存在下与多烯醇合成碳酸烯丙酯的方法,该碱性催化剂可以选自氢氧化钠,碳酸钠,醇钠,有机碱或碱式离子交换树脂 。 获得的最终产品根据起始混合物的组分的比例而不同。 因此,在二烯丙基碳酸酯/二醇比大于或等于10的二醇的情况下,所得产物由二醇的双碳酸烯丙酯和少于或等于10%的主要代表的低聚物的量构成 二聚体。 如果该比例小于10,则低聚物的百分数上升直到在大约化学计量比的情况下达到接近70%反应产物的值。
    • 6. 发明申请
    • Optical element for use in eye protection devices and methods for its manufacture
    • 用于眼睛保护装置的光学元件及其制造方法
    • US20060114573A1
    • 2006-06-01
    • US11090540
    • 2005-03-25
    • Giuseppe IoriGraziano MarusiPaolo Baiocchi
    • Giuseppe IoriGraziano MarusiPaolo Baiocchi
    • G02B25/00
    • G02B5/3033G02C7/104G02C7/108G02C7/12
    • An optical element is described comprising an optical part dyed so as to have a curve of the factor of spectral transmittance in a wavelength range comprised between 400 and 700 nm comprising: i) at least one relative maximum at a wavelength comprised between 400 and 510 nm, and ii) at least one relative minimum at a wavelength comprised between 510 and 625 nm, wherein the ratio between the value of the factor of spectral transmittance at said at least one relative maximum and the value of the factor of spectral transmittance at said at least one relative minimum is of at least 1.3, and wherein the ratio between the value of the factor of spectral transmittance at a wavelength of 700 nm and the value of the factor of spectral transmittance at said at least one relative minimum is of at least 3.0. Advantageously, such an optical element allows to enhance visual acuity, increasing in particular the chromatic contrast and the sensitivity to the red and blue colors, and to meet the traffic lights and road signal recognition requirements indicated by the international standards.
    • 描述了一种光学元件,其包括染色的光学部件,以便在包括400和700nm的波长范围内具有光谱透射率因子的曲线,包括:i)在400和510nm之间的波长处的至少一个相对最大值 和ii)在510和625nm之间的波长处的至少一个相对最小值,其中在所述至少一个相对最大值处的光谱透射率的值与所述至少一个相对最大值处的光谱透射率因子之间的比值 至少一个相对最小值至少为1.3,并且其中波长为700nm处的光谱透射率的值与所述至少一个相对最小值处的光谱透射率的值之间的比值至少为3.0 。 有利地,这种光学元件允许增强视敏度,特别是增加色度对比度和对红色和蓝色颜色的敏感性,并且满足国际标准所示的交通信号灯和道路信号识别要求。