OPTICAL ARTICLE COMPRISING A DOUBLE-LAYER ABRASION AND SCRATCH RESISTANT COATING AND METHOD FOR PRODUCTION THEREOF
    2.
    发明申请
    OPTICAL ARTICLE COMPRISING A DOUBLE-LAYER ABRASION AND SCRATCH RESISTANT COATING AND METHOD FOR PRODUCTION THEREOF 审中-公开
    包含双层磨损和耐刮擦涂层的光学制品及其生产方法

    公开(公告)号:US20170003420A1

    公开(公告)日:2017-01-05

    申请号:US15264290

    申请日:2016-09-13

    Abstract: The invention relates to an optical article comprising a substrate coated with an abrasion and scratch resistant coating composed of a lower layer and an upper layer that do adhere to each other, the upper layer and the lower layer being layers of cured upper and lower layer compositions, said upper layer composition comprising at least one organosilane, or a hydrolyzate thereof, of formula RnYmSi(X)4−n−m and at least one compound, or a hydrolyzate thereof, of formula M(Z)x, the following ratio being lower than 2.3: Rs =  theoretical   dry   matter   weight   of compounds   I   in   the   upper   layer   composition theoretical   dry   matter   weight   of compounds   II   in   the   upper   layer   composition said lower layer composition comprising at least one organosilane, or a hydrolyzate thereof, of formula R′n′Y′m′Si(X′)4−n′−m′ and, optionally, at least one compound, or a hydrolyzate thereof, of formula M′(Z′)y, the following ratio being higher than 2.3: Ri =  theoretical   dry   matter   weight   of compounds   III   in   the   lower   layer   composition theoretical   dry   matter   extract   of compounds   IV   in   the   lower   layer   composition In the hereabove formulas, M and M′ are metals or metalloids of valences x and y, at least equal to 4, R and R′ groups are monovalent organic groups that are bound to silicon through a carbon atom and that contain at least one epoxy function, X, X′, Z and Z′ groups are hydrolyzable groups, Y and Y′ are monovalent organic groups that are bound to silicon through a carbon atom, n, m, n′ and m′ being integers such that n and n′=1 or 2 with n+m and n′+m′=1 or 2.

    Abstract translation: 在上述式中,M和M'是化合价x和y的金属或准金属,至少等于4,R和R'基团是通过碳原子与硅结合且含有至少一个环氧基的单价有机基团 功能X,X',Z和Z'基团是可水解基团,Y和Y'是通过碳原子与硅结合的一价有机基团,n,m,n'和m'是整数,使得n和n '= 1或2,其中n + m和n'+ m'= 1或2。

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