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    • 4. 发明申请
    • PEARLESCENT PIGMENTS HAVING A SECONDARY COATING COMPRISING ALPHA-SILANES AND METHOD FOR THE PRODUCTION THEREOF
    • 具有包含ALPHA-硅烷的二次涂层的珍珠粉及其生产方法
    • US20090249979A1
    • 2009-10-08
    • US12280378
    • 2007-02-23
    • Günter KauppUlrich Schmidt
    • Günter KauppUlrich Schmidt
    • C09D5/29B05D7/00
    • C09C1/0015C01P2004/84C09C2200/401C09C2200/407C09C2200/408C09C2200/409C09D5/36Y10T428/2991Y10T428/2993Y10T428/2995Y10T428/2996
    • The invention relates to a pearlescent pigment comprising a metal oxide-containing, platelet-shaped substrate and having a first and a second protective layer, wherein the metal oxide has a refractive index greater than 1.8, and in which the first protective layer comprises cerium oxide and/or hydrated cerium oxide and/or cerium hydroxide, the second protective layer consists substantially, preferably completely, of SiO2, wherein the second protective layer is disposed on top of the first protective layer, and between the first and second protective layers there can be disposed metal oxide layers which differ from cerium oxide and/or hydrated cerium oxide and/or cerium hydroxide and SiO2, wherein the second protective layer has an organochemical aftercoat and the organochemical aftercoat comprises at least one silane bonded to the second protective layer by means of at least one oxygen atom, said α-silane having the formula —O(4−n−m)—Si(—R1)m(—CH2—Y)n  (I), in which 1≦n+m≦3; m=0 to 2; n=1 to 3 and R1 is a hydrogen atom or an Si—C-bonded C1-C20-hydrocarbon radical or a C1-C15-hydrocarbonoxy radical, in which in each case one or more methylene units not adjacent to one another can be replaced by the groups —O—, —CO—, —COO—, —OCO—, or —OCOO—, —S—, or —NRx— and in which one or more methine units not adjacent to one another can be replaced by the groups —N═, —N═N—, or —P═, wherein R1 can independently be the same or different, Rx can be a hydrogen atom or a linear, branched and/or cyclic C1-C15-hydrocarbon radical or aryl radical, and Y is a functional binding group reactive with a binder system.
    • 本发明涉及包含含金属氧化物的片状基材并具有第一和第二保护层的珠光颜料,其中金属氧化物的折射率大于1.8,其中第一保护层包含氧化铈 和/或水合氧化铈和/或氢氧化铈,所述第二保护层基本上优选完全由SiO 2组成,其中所述第二保护层设置在所述第一保护层的顶部上,并且在所述第一和第二保护层之间可以 设置与氧化铈和/或水合氧化铈和/或氢氧化铈和SiO 2不同的金属氧化物层,其中第二保护层具有有机化学后涂层,有机化学后涂层包含通过装置结合到第二保护层的至少一个硅烷 的至少一个氧原子,所述α-硅烷具有式-O(4-nm)-Si(-R1)m(-CH2-Y)n(I),其中1 <= n + m <= 3 ; m = 0〜2; n = 1〜3,R 1为氢原子或Si-C键合的C 1 -C 20烃基或C 1 -C 15烃氧基,其中在各种情况下,一个或多个彼此不相邻的亚甲基可以是 被-O - , - CO - , - COO-,-OCO-或-OCOO-,-S-或-NRx-基团取代,并且其中不相邻的一个或多个次甲基单元可以被 基团-N-,-NN-或-P-,其中R 1可以独立地相同或不同,R x可以是氢原子或直链,支链和/或环状C 1 -C 15 - 烃基或芳基, Y是与粘合剂体系反应的功能性结合基团。