申请人:Clariant International Ltd.
公开号:EP2557128A1
公开(公告)日:2013-02-13
The instant invention relates to the Aqueous coating compositions for optical brightening and shading of substrates, comprising
(a) at least one optical brightener of formula (I)
in which
the anionic charge on the brightener is balanced by a cationic charge composed of one or more identical or different cations selected from the group consisting of hydrogen, an alkali metal cation, alkaline earth metal, ammonium, ammonium which is mono-, di-, tri- or tetrasubstituted by a C1-C4 linear or branched alkyl radical, ammonium which is mono-, di-, tri- or tetrasubstituted by a C1-C4 linear or branched hydroxyalkyl radical, ammonium which is, di-, tri- or tetrasubstituted by a mixture of C1-C4 linear or branched alkylradical and linear or branched hydroxyalkyl radical or mixtures of said compounds,
R1 and R1'
may be the same or different, and each is hydrogen, C1-C4 linear or branched alkyl, C2-C4 linear or branched hydroxyalkyl, CH2CO2-, CH2CH2CONH2 or CH2CH2CN,
R2 and R2'
may be the same or different, and each is C1-C4 linear or branched alkyl, C2-C4 linear or branched hydroxyalkyl, CH2CO2-, CH(CO2-)CH2CO2-, CH(CO2-)CH2CH2CO2-, CH2CH2SO3-, CH2CH2CO2-, CH2CH(CH3)CO2-, benzyl, or
R1 and R2
and/or R1' and R2', together with the neighboring nitrogen atom signify a morpholine ring and
p
is 1 or 2,
(b) at least one shading dye of formula (II)
in which
R3
signifies H, methyl or ethyl,
R4
signifies paramethoxyphenyl, methyl or ethyl,
M
signifies a cation selected from the group consisting of hydrogen, an alkali metal cation, alkaline earth metal, ammonium, ammonium which is mono-, di-, tri- or tetrasubstituted by a C1-C4 linear or branched alkyl radical, ammonium which is mono-, di-, tri- or tetrasubstituted by a C1-C4 linear or branched hydroxyalkyl radical, ammonium which is, di-, tri- or tetrasubstituted by a mixture of C1-C4 linear or branched alkylradical and linear or branched hydroxyalkyl radical or mixtures of said compounds,
(c) at least one white pigment,
(d) at least one primary binder,
(e) optionally one or more secondary binders and and
(f) water.
本发明涉及用于底材光学增亮和遮光的水性涂料组合物,包括
(a) 至少一种式 (I) 的光学增白剂
其中
光亮剂上的阴离子电荷被阳离子电荷所平衡,阳离子电荷由一个或多个相同或不同的阳离子组成,这些阳离子选自氢、碱金属阳离子、碱土金属、铵、由 C1-C4 直链或支链烷基单取代、二取代、三取代或四取代的铵、被 C1-C4 直链或支链羟烷基单、二、三或四取代的铵;被 C1-C4 直链或支链烷基和直链或支链羟烷基混合物二、三或四取代的铵或上述化合物的混合物、
R1 和 R1'
可以相同或不同,各自为氢、C1-C4 直链或支链烷基、C2-C4 直链或支链羟烷基、CH2CO2-、CH2CH2CONH2 或 CH2CH2CN、
R2 和 R2'
可以相同或不同,且各自为 C1-C4 直链或支链烷基、C2-C4 直链或支链羟基烷基、CH2CO2-、CH(CO2-)CH2CO2-、CH(CO2-)CH2CH2CO2-、CH2CH2SO3-、CH2CH2CO2-、CH2CH(CH3)CO2-、苄基,或
R1 和 R2
和/或 R1' 和 R2',连同邻近的氮原子表示一个吗啉环,并且
p
为 1 或 2、
(b) 至少一种式 (II) 的遮光染料
其中
R3
表示 H、甲基或乙基、
R4
表示对甲氧基苯基、甲基或乙基、
M
表示阳离子,选自由氢、碱金属阳离子、碱土金属、铵、由 C1-C4 直链或支链烷基单、二、三或四取代的铵、由 C1-C4 直链或支链羟烷基单、二、三或四取代的铵、被 C1-C4 直链或支链羟烷基单、二、三或四取代的铵;被 C1-C4 直链或支链烷基和直链或支链羟烷基混合物二、三或四取代的铵或上述化合物的混合物、
(c) 至少一种白色颜料、
(d) 至少一种主粘合剂、
(e) 可选的一种或多种辅助粘合剂,以及
(f) 水。