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CN110382629A - 复合白色颜料 - Google Patents

复合白色颜料 Download PDF

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Publication number
CN110382629A
CN110382629A CN201880016802.8A CN201880016802A CN110382629A CN 110382629 A CN110382629 A CN 110382629A CN 201880016802 A CN201880016802 A CN 201880016802A CN 110382629 A CN110382629 A CN 110382629A
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China
Prior art keywords
white pigment
mentioned
white
layer
thickness
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Granted
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CN201880016802.8A
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English (en)
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CN110382629B (zh
Inventor
李珍亨
姜光中
崔丙祺
林光水
长吉玩
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Cqv Co
CQV Co Ltd
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Cqv Co
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    • C09C1/0015Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C09C1/0024Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a stack of coating layers with alternating high and low refractive indices, wherein the first coating layer on the core surface has the high refractive index
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Abstract

本发明公开包含各种尺寸的基质和/或各种厚度的TiO2,并混合有不同色差值的白色颜料的复合白色颜料。本发明的复合白色颜料的特征在于,包含:第一白色颜料,包含基质和形成于上述基质上的白色金属氧化物层;以及第二白色颜料,包含基质和形成于上述基质上的白色金属氧化物层,并具有与上述第一白色颜料不同的色差值。

Description

复合白色颜料
技术领域
本发明涉及颜料制备技术,更详细地,涉及可示出高光泽度和白度的复合白色颜料。
背景技术
白色(White)颜料已被用于各种领域的美学效果。例如,作为产业用用在壁纸、地板革、塑料成型、皮革涂层、丝绸印刷、胶印、家电的涂色以及陶瓷应用等。并且,作为化妆品用用在多种彩妆,如口红、指甲油、发胶、眼影、唇彩等。并且,珍珠颜料用在需要高耐候性的汽车用内置及外置涂色及建筑、船舶涂料。
常规的白色颜料具有在厚度为约350~700nm的诸如云母的板上基质涂敷有厚度为60~100nm的TiO2等金属氧化物的结构。
然而,在具有这种结构的白色颜料的情况下,由于光泽不足或者白度低,而存在白色美感不足的缺点。
现有技术文献
专利文献1:韩国公开专利公报第10-2012-0107013号(2012年9月27日公开)。
发明内容
发明所要解决的问题
本发明的目的在于,提供一种包含具有特定厚度的基质和特定厚度的金属氧化物层等,并通过调节它们的比例以实现优秀的光泽度和白度的复合白色颜料。
用于解决问题的方案
用于实现上述目的的本发明实施例的复合白色颜料的特征在于,包含:第一白色颜料,包含基质和形成于上述基质上的白色金属氧化物层;以及第二白色颜料,包含基质和形成于上述基质上的白色金属氧化物层,并具有与上述第一白色颜料不同的色差值。
本发明第一实施例的复合白色颜料的特征在于,混合有分别包含基质和形成于上述基质上的白色金属氧化物层的第一白色颜料和第二白色颜料,但是上述第二白色颜料的金属氧化物的最小厚度比上述第一白色颜料的金属氧化物层的最大厚度大50nm以上。
本发明第二实施例的复合白色颜料的特征在于,混合有分别包含基质和形成于上述基质上的白色金属氧化物层的第一白色颜料和第二白色颜料,但是上述第二白色颜料的最小厚度比上述第一白色颜料的最大厚度大50nm以上。
此时,上述第一白色颜料包含厚度为30~80nm的白色金属氧化物层,上述第二白色颜料可包含厚度为60~100nm的白色金属氧化物层。
本发明第三实施例的复合白色颜料的特征在于,混合有分别包含基质和形成于上述基质上的白色金属氧化物层的第一白色颜料和第二白色颜料,但是上述白色金属氧化物层包括:第一高折射层,形成于上述基材的表面,并包含TiO2;低折射层,形成于上述第一高折射层上,并包含折射率低于TiO2的物质;以及第二高折射层,形成于上述低折射层上,并包含TiO2,当上述第一高折射层的厚度为T1且上述第二高折射层的厚度为T2时,对于第一白色颜料2T1>T2≥T1,对于第二白色颜料3T1≥T2≥2T1。
此时,上述复合白色颜料可包含厚度差为50nm以上的至少两组基质。
并且,上述第一高折射层及上述第二高折射层可包含金红石矿(Rutile)结构的TiO2。上述低折射层可包含SiO2及MgO·SiO2中的一种以上。
在多个上述实施例中,上述基质可选自天然云母、合成云母、玻璃片及氧化铝片中。
本发明的复合白色颜料可以作为干涉颜料包含在多种物品中,如化妆品、涂料、塑料等。
发明效果
在本发明的白色颜料的情况下,包含具有特定厚度的基质和特定厚度的金属氧化物层等,并混合有不同色差值的白色颜料,由此可实现光泽度和白度优秀的复合白色颜料。
同时,通过调节多个高折射层的相对厚度,即,相对于第一高折射层,上部的第二高折射层更厚,并针对于下部的第一高折射层的厚度调节上部的第二高折射层的厚度,从而可在基质的特定厚度下容易制备绿色调(Green Tone)到红(Red)色调的多种色调的白色颜料。
附图说明
图1为简要示出本发明比较例1的白色颜料。
图2为简要示出本发明实施例3的白色颜料。
图3为示出实施例3的白色颜料的光学显微镜(500倍率)照片。
具体实施方式
以下参照后述的实施例会让本发明的优点、特征及实现这些优点和特征的方法更加明确。但是,本发明并不局限于以下所公开的实施例,能够以互不相同的各种方式实施,本实施例用于使本发明所属技术领域的普通技术人员完整地理解本发明的范畴,本发明仅由发明要求保护范围限定。
以下,参照附图,对本发明的复合白色颜料进行详细说明。
图1为简要示出可适用于本发明的白色颜料。
参照图1,示出的白色颜料具有在基质110上形成有如TiO2层的白色金属氧化物层120的结构。
图2为简要示出可适用于本发明的白色颜料。
参照图2,示出的白色颜料具有如下结构,即,在基质210上形成有多层白色氧化物层,即形成第一高折射层220如下部TiO2层,在其之上形成低折射层230和第二高折射层240,例如SiO2层和上部TiO2层。
更优选地,在具有图2所示的结构的白色颜料的情况下,中间有SiO2层230,从而可改善光泽。
参照图1及图2,本发明的白色颜料包含基质110、210和形成于上述基质110、210上的至少一层白色金属氧化物层120、220~240。白色金属氧化物实际上具有包围基质整个表面的形态,但是为了简化结构,在图1及图2中示出白色金属氧化物层形成于基质上部。
基质110、210可选自天然云母、合成云母、玻璃片及氧化铝片中。优选地,在形态上基质主要是板状基质,但是还可利用球状基质。另一方面,基质110、210的长方形长度可以是约5~600μm左右。
在图2中示出的实施例中,可按从上述的第一高折射层220到第二高折射层240的顺序仅形成一次,根据需要,可按此顺序重复形成两次以上。同时,每个覆盖层之间还可形成有额外的覆盖层,最上部的第二高折射层240上还可形成有用于提高耐候性等的保护覆盖层。并且,在图1及图2中示出的实施例中,在形成白色金属氧化物层之前还可形成利用氯化锡(SnCl4)等的预处理层。
以下,对图2中示出的实施例的白色颜料的结构进行详细说明
第一高折射层220形成于基材210的表面,并包含TiO2
在本发明中,上部的第二高折射层240为实现白色的主层,下部的第一高折射层220有助于提高白度。第一高折射层220的厚度可以为30~90nm,但并不限定于此。
并且,包含在第一高折射层220及第二高折射层240中的TiO2可具有金红石矿(Rutile)或锐钛矿(Anatase)结构,更优选地,具有金红石矿结构。相对于锐钛矿结构的TiO2,在金红石矿结构的TiO2的情况下,具有光泽及稳定性更优秀的优点。包含这种金红石矿结构的TiO2的第一高折射层及第二高折射层可通过使用SnCl4等锡化合物对基材的表面进行预处理后,利用TiCl4等覆盖TiO2来形成。
低折射层230形成于第一高折射层220上。
低折射层230位于第一高折射层220与第二高折射层240之间,形成干涉结构,有助于提高白色强度。这种低折射层可包含SiO2及MgO·SiO2中的一种以上。
第二高折射层240形成于低折射层230上。此时,优选地,第二高折射层240等于或大于下部的第一高折射层220的厚度。即,当第一高折射层的厚度为T1且上述第二高折射层的厚度为T2时,优选地,T2≥T1。因为若第一高折射层更厚,则因白度下降而难以实现白色,在厚度一样的情况下,由于掩盖力下降而作为颜料的价值略有下降。
另一方面,第一高折射层及第二高折射层可在pH为3以下的强酸性条件下由TiCl4形成。
另一方面,低折射层可由SiO2或MgO·SiO2形成。更具体地,可通过如下方法来形成,即,当投入SiO2或MgO·SiO2时保持pH为6~8的中性条件,在投入SiO2或MgO·SiO2之后保持pH为3以下的强酸性条件。
本发明的复合白色颜料混合有第一白色颜料及第二白色颜料。
第一白色颜料包含基质和形成于上述基质上的白色金属氧化物层。第二白色颜料包含基质和形成于上述基质上的白色金属氧化物层,具有与上述第一白色颜料不同的色差值。
在本发明第一实施例的复合白色颜料中,第二白色颜料的白色金属氧化物层的最小厚度比上述第一白色颜料的白色金属氧化物层的最大厚度厚60nm以上。白色金属氧化物层的厚度可以有多种,例如,约80nm、120nm、140nm、160nm,根据这些白色金属氧化物层厚度,色调略有不同。
例如,若包含在第一白色颜料的白色金属氧化物层的厚度为60~100nm,则包含在第二白色颜料的白色金属氧化物层的厚度为120~260nm,像这样,比第一白色颜料的白色金属氧化物层的最大厚度厚60nm以上。可通过混合具有不同白色调的这些来实现更高的白度。
在本发明第二实施例的复合白色颜料中,例如,对于第一白色颜料,当基质的厚度为200~250nm时,在白色金属氧化物层的厚度为60~100nm的情况下,呈现绿色调的白色。相反,对于第二白色颜料,当基质的厚度为300~350nm时,在白色金属氧化物层的厚度为60~100nm的情况下,呈现红色调的白色。若混合绿色调的白色颜料和红色调的白色颜料,则发挥混合色效果,相对于绿色调白色颜料或红色调白色颜料,可提高白色度。
作为另一例,例如,本发明的复合白色颜料中可混合有白色金属氧化物层的厚度为约60nm的白色颜料和白色金属氧化物的厚度为约100nm的白色颜料。
此时,在本发明第一实施例的复合白色颜料中,第二白色颜料的基质的最小厚度比上述第一白色颜料的金属氧化物层的最大厚度大50nm以上。例如,若包含在第一白色颜料的基质的厚度为200~250nm,则包含在第二白色颜料的基质的厚度为300~350nm,像这样,比第一白色颜料的基质的最大厚度大50nm以上。在基质厚度相差50nm以上的情况下,白色调不同,由于混合有这些,从而可实现更高的白度。
例如,在第一白色颜料中,当白色金属氧化物层单的厚度为约80nm时,在基质的厚度为200~250nm的情况下,呈现绿色调白色。相反,在第二白色颜料中,当白色金属氧化物层的厚度为约80nm时,在基质的厚度为300~350nm的情况下,呈现红色调白色。若混合绿色调的白色颜料和红色调的白色颜料,则发挥混合色效果,相对于绿色调白色颜料或红色调白色颜料,可提高白度。
本发明第三实施例的复合白色颜料为上述第二实施例的复合白色颜料的优选的例,混合有第一白色颜料和第二白色颜料,它们分别具有如图2所示的结构。
此时,当第一高折射层的厚度为T1且上述第二高折射层的厚度为T2时,对于第一白色颜料2T1>T2≥T1,对于第二白色颜料3T1≥T2≥2T1。
即,当第一高折射层220的厚度为T1且第二高折射层240的厚度为T2时,第二高折射层240的厚度比第一高折射层220的厚度可能大1~2倍(1<T2≤2)。在此情况下,可在特定基质厚度下实现绿色调的白色。与此不同,第二高折射层350的厚度比第一高折射层320的厚度可能大2~3倍(2<T2≤3)。在此情况下,可在特定基质厚度下实现红色调的白色。若基质的厚度不同,则色调可能略有变化。像这样,可通过调节第一高折射层的厚度与第二高折射层的厚度之比来实现各种色调的白色颜料。
并且,本发明的白色颜料可以是混合80:20~20:80左右的重量比的第二高折射层350的厚度比第一高折射层320的厚度大1~2倍的白色颜料和第二高折射层350的厚度比第一高折射层320的厚度大2~3倍的白色颜料。在此情况下,不仅具有高光泽度,而且可具有优秀的白度。
此时,如第一实施例,上述复合白色颜料可包含厚度相差50nm以上的至少两组基质。
在上述第一实施例至第三实施例的复合白色颜料中,即使涂敷有相同材质、相同厚度的白色金属氧化物层,但白色调根据基质的厚度而不同,即使涂敷有相同基质厚度、相同材质的白色金属氧化物层,但白色调根据白色金属氧化物层的厚度而不同,通过利用这种现象,本发明人可通过综合应用这些具有不同白色调的白色颜料来实现了混合的白色(mixed white color),这种混合的白色可具有高光泽度及高白度。
优选地,可分别包含20重量百分比以上的上述第一白色颜料及第二白色颜料。即,可通过包含规定量以上的不同色调的白色颜料来提高实现所述高光泽度及高白度的可靠性。
在如图1所示的结构的情况下,本发明的白色颜料制备方法可包括制备分散有基质的浆料的步骤,以及在分散在上述浆料的基质的表面形成高折射层的步骤。而且,在如图2所示的结构的情况下,本发明的白色颜料制备方法可包括:制备分散有基质的浆料的步骤;在分散在上述浆料的基质的表面形成第一高折射层的步骤;在第一高折射层上形成低折射层的步骤;以及在低折射层上形成第二高折射层的步骤。
当改变基质厚度时,可利用在浆料制备步骤中利用不同厚度的基质的方法。作为其他方法,可使用通过利用特定厚度的基质制备第一白色颜料,并利用不同厚度的基质来制备第二白色颜料后,将这些进行混合的方法。
当改变白色金属氧化物层的厚度时,可使用通过改变投入浆料的TiO2前体溶液(例如,TiCl4溶液)的浓度或者改变滴定时间来制备第一白色颜料和第二白色颜料后,将这些进行混合的方法。
如上所述,本发明的复合白色颜料具有优秀的白色美感,因而可应用于涂料、塑料、化妆品等产品中。
实施例
以下,通过本发明优选的实施例进一步详细说明本发明的结构及作用。但是,这是作为本发明的优选例示提出的,在任何意义上都不应被解释为限制本发明。
将省略在此未描述的内容,因为本领域技术人员可以在技术上充分推断。
1.白色颜料的制备
比较例1
将厚度为350~700nm的100g的合成云母片投入2L的脱矿质水后,通过搅拌形成浆料。然后,将浆料加热至75℃后,通过添加HCl溶液来将浆料的pH调至1.7。
然后,称取27g的SnCl4溶液(SnCl4含量为11重量百分比),经1小时以恒定速度滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。
然后,称取170g的TiCl4溶液(TiCl4含量为33重量百分比),经3小时滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。滴定后回流30分钟。
回流后,过滤最终浆料并进行脱水,用脱矿质水清洗两次后,在120℃的温度下干燥10小时,获得粉末状中间产物。
随后,将获得的中间产物在800℃的温度下煅烧12分钟,获得白色颜料粉末。
实施例1
将厚度为350~700nm的100g的合成云母片投入2L的脱矿质水后,通过搅拌形成浆料。然后,将浆料加热至75℃后,通过添加HCl溶液来将浆料的pH调至1.7。
然后,称取27g的SnCl4溶液(SnCl4含量为11重量百分比),经1小时以恒定速度滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。
然后,称取170g的TiCl4溶液(TiCl4含量为33重量百分比),经3小时滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。滴定后回流30分钟。
回流后,过滤最终浆料并进行脱水,用脱矿质水清洗两次后,在120℃的温度下干燥10小时,获得粉末状中间产物。
随后,将获得的中间产物在800℃的温度下煅烧12分钟,获得白色颜料粉末。
以与上述相同的方法,可通过增加TiCl4溶液的使用量来获得呈金(Gold)色调、红色调、蓝(Blue)色调的颜料粉末。
可通过混合以这种方法获得的白色粉末来获得五颜六色的白色颜料粉末。
实施例2
(1)制备例2-1
将厚度为200~250nm的100g的板状氧化铝片投入2L的脱矿质水后,通过搅拌形成浆料。然后,将浆料加热至75℃后,通过添加HCl溶液来将浆料的pH调至1.7。
然后,称取27g的SnCl4溶液(SnCl4含量为11重量百分比),经1小时以恒定速度滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。
然后,称取120g的TiCl4溶液(TiCl4含量为33重量百分比),经3小时滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。滴定后回流30分钟。
回流后,过滤最终浆料并进行脱水,用脱矿质水清洗两次后,在120℃的温度下干燥10小时,获得粉末状中间产物。
随后,将获得的中间产物在800℃的温度下煅烧12分钟,获得呈绿色调的白色颜料粉末。
(2)制备例2-2
将厚度为300~350nm的100g的板状氧化铝片投入2L的脱矿质水后,通过搅拌形成浆料。然后,将浆料加热至75℃后,通过添加HCl溶液来将浆料的pH调至1.7。
然后,称取27g的SnCl4溶液(SnCl4含量为11重量百分比),经1小时以恒定速度滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。
然后,称取110g的TiCl4溶液(TiCl4含量为33重量百分比),经3小时滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。滴定后回流30分钟。
回流后,过滤最终浆料并进行脱水,用脱矿质水清洗两次后,在120℃的温度下干燥10小时,获得粉末状中间产物。
随后,将获得的中间产物在800℃的温度下煅烧12分钟,获得呈红色调的白色颜料粉末。
(3)制备例2-3
以1:1重量比混合通过制备例2-1及制备例2-2的方法获得的白色粉末来获得白色颜料粉末。将其称为实施例2。
实施例3
(1)制备例3-1
将厚度为350~700nm的100g的合成云母片投入2L的脱矿质水后,通过搅拌形成浆料。然后,将浆料加热至75℃后,通过添加HCl溶液来将浆料的pH调至1.7。
然后,称取27g的SnCl4溶液(SnCl4含量为11重量百分比),经1小时以恒定速度滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。
然后,称取130g的TiCl4溶液(TiCl4含量为33重量百分比),经3小时滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。滴定后回流10分钟,然后用20%的NaOH稀释液将pH调至7.5(形成第一高折射层)。
然后,称取1200g的MgO·SiO2溶液(MgO·SiO2含量为3.5重量百分比),经4小时滴定于浆料中,并用HCl溶液将pH恒定地保持在7.5。随后,添加HCl溶液,将浆料的pH调至1.7后,额外搅拌15分钟来进行回流(形成低折射层)。
然后,称取27g的SnCl4溶液(SnCl4含量为11重量百分比),经1小时以恒定的速度滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。
然后,称取200g的TiCl4溶液(TiCl4含量为33重量百分比),经6小时滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7(形成第二高折射层)。
回流后,过滤最终浆料并进行脱水,用脱矿质水清洗两次后,在120℃的温度下干燥10小时,获得粉末状中间产物。
随后,将获得的中间产物在800℃的温度下煅烧12分钟,获得带略微绿色调的白色颜料粉末。
(2)制备例3-2
将厚度为350~700nm的100g的合成云母片投入2L的脱矿质水后,通过搅拌形成浆料。然后,将浆料加热至75℃后,通过添加HCl溶液来将浆料的pH调至1.7。
然后,称取27g的SnCl4溶液(SnCl4含量为11重量百分比),经1小时以恒定速度滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。
然后,称取130g的TiCl4溶液(TiCl4含量为33重量百分比),经3小时滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。滴定后回流10分钟,然后用20%的NaOH稀释液将pH调至7.5(形成第一高折射层)。
然后,称取1200g的MgO·SiO2溶液(MgO·SiO2含量为3.5重量百分比),经4小时滴定于浆料中,并用HCl溶液将pH恒定地保持在7.5。随后,添加HCl溶液,将浆料的pH调至1.7后,额外搅拌15分钟来进行回流(形成低折射层)。
然后,称取27g的SnCl4溶液(SnCl4含量为11重量百分比),经1小时以恒定的速度滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7。
然后,称取300g的TiCl4溶液(TiCl4含量为33重量百分比),经8小时滴定于浆料中,并用30%的NaOH稀释液将pH恒定地保持在1.7(形成第二高折射层)。
回流后,过滤最终浆料并进行脱水,用脱矿质水清洗两次后,在120℃的温度下干燥10小时,获得粉末状中间产物。
随后,将获得的中间产物在800℃的温度下煅烧12分钟,获得带略微红色调的白色颜料粉末。
(3)制备例3-3
以1∶1的重量比混合通过制备例3-1及制备例3-2的方法获得的白色粉末来获得白色颜料粉末。将其称为实施例3。
实施例4
除了利用厚度为200~250nm的板状氧化铝片来代替合成云母片之外,以与制备例3-1及制备例3-2相同的方法获得多种白色粉末(制备例4-1、制备例4-2),并以1∶1的重量比进行混合来获得白色颜料。
2.物性评价
对比较例1、实施例1~4的物性进行如下评价。
(1)彩度评价
表1示出制备例3-1、制备例3-2及制备例3-3、制备例4-1、制备例4-2及制备例4-3的白色颜料的色差值(a*,b*)。
表2示出比较例1及实施例1~4的白色颜料的色差值(a*,b*)。利用柯尼卡美能达色度计CR-400D65(Konika Minolta Chroma meter CR-400D65)测定色差值,a*为红色(Red)度,b*为黄色(Yellow)度,Δa*、Δb*表示以比较例为基准的实施例1~4的色差变化值以及以实施例2为基准实施例4的色差变化值。
表1。
L* a* b*
制备例3-1 85.86 -5.22 -3.55
制备例3-2 70.46 9.55 -2.87
实施例3 79.80 -1.83 -3.33
制备例4-1 87.92 -4.74 -1.81
制备例4-2 71.61 6.29 -6.06
实施例4 81.79 -1.64 -2.99
参照表1,在制备例3-1及制备例3-2中,可知,当基质仅具有特定厚度的基质时,由于高彩度和低发生率而获得带略微特定色调的白色粉末。可通过混合不同基质厚度的粉末来调节白色粉末所带的特定色调。
测定制备例3-1是带略微的绿色调的白色粉末,制备例3-2是带略微的红色调的白色粉末。可知,通过混合这两种粉末来进行混色,从而可获得a*、b*值更接近0的更白的粉末。
在实施例4的情况下,可知,可通过混合带略微绿色调的粉末和带略微红色调的粉末来获得a*、b*值更接近0的更白的粉末。
表2
参照表2,比较例1是利用规定厚度的基质的普通白色珍珠颜料结构。
在实施例1的情况下,将具有不同厚度的金属氧化物层的粉末与如比较例1的基质混合,并利用混色制备白色粉末,可见白度增加。
在实施例2的情况下,可知,与比较例1相比,△b*值变化相对少,因蓝色调变少而白度更佳。
在实施例3的情况下,可知,与比较例1相比,光泽略有上升,因△a*、△b*值变化相对少而白度更佳。
在实施例4的情况下,可知,与比较例1相比,光泽略有上升,因△a*、△b*值变化相对少而白度更佳。并且,在实施例4的情况下,可知,与比较例2相比,光泽略有上升,因△a*、△b*值变化相对少而白度更佳。
应用例
以下是对将从上述实施例3中获得的白色颜料用于涂料、塑料、油墨及化妆品的应用例的描述。
(1)用于涂料的例
这是用于汽车表面涂敷涂料的例。
基础涂料组合物
聚酯树脂
HiQ基础调色用透明(BC-1000)(株)纳路涂料(Noroo paint)
HiQ LV稀释剂(DR-950WS)(株)纳路涂料
混合4重量份的从实施例3中获得的白色颜料和96重量份的上述聚酯树脂组合物,向混合物中添加100重量份的聚酯树脂用稀释剂,将其粘度降低到适合喷涂[使用福特杯(Ford C up)#4适用14秒钟至16秒钟(25℃)]的浓度,并通过喷涂进行涂敷来形成底涂层。将具有下述组合物的未着色的表面透明涂料涂敷到底涂层上。
表面透明涂料
HiQ Ultraclear(株)纳路涂料
HiQ Ultraclear固化剂(CCH-100)(株)纳路涂料
表面涂敷后,将涂料在40℃的温度下暴露于空气中30分钟,并在130℃的温度下加热30分钟以进行固化。
(2)用于塑料的例
以下是用于着色塑料的颜料组合物的例。
聚酯树脂(颗粒):70重量份
从实施例3中获得的白色颜料:1重量份
硬脂酸锌:0.2重量份
液体石蜡:0.1重量份
通过干混含上述组合物的颗粒来对其进行挤压成型。
(3)用于化妆品的例
以下是唇部彩妆化妆品用组合物。
氢化蓖麻油(Hydrogenated Castor Oil):37重量份
辛基十二烷醇(Octyldodecanol):10重量份
二异硬脂基苹果酸酯(Diisostearyl Malate):20重量份
地蜡(Ceresin):5重量份
大戟蜡(Euphorbia Cerifera(Candelilla)Wax):5重量份
二聚季戊四醇六羥基硬脂酸酯/六硬脂酸/六松脂酸酯(DipentaerythritylHexahydroxystearate/Hexastearate/Hexarosinate):18.5重量份
巴西棕榈蜡(Copernicia Cerifera(Carnauba)Wax):3重量份
羊毛脂酸异丙酯(Isopropyl Lanolate):1重量份
VP/十六碳烯共聚物(VP/Hexadecene Copolymer):1重量份
从实施例3中获得的白色颜料:适当量
抗氧化剂、保存剂及芳香剂:少量
由上述组合物形成口红。
以上以本发明一实施例为中心进行了说明,但是可以在本领域技术人员的水平上进行各种改变和修改。在不脱离本发明的范围的情况下,这些改变和修改可以属于本发明。因此,本发明的范围将由以上描述的发明要求保护范围确定。

Claims (12)

1.一种复合白色颜料,其特征在于,包含:
第一白色颜料,包含基质和形成于上述基质上的白色金属氧化物层;以及
第二白色颜料,包含基质和形成于上述基质上的白色金属氧化物层,并具有与上述第一白色颜料不同的色差值。
2.根据权利要求1所述的复合白色颜料,其特征在于,上述第二白色颜料的基质的最小厚度比上述第一白色颜料的基质的最大厚度大50nm以上。
3.根据权利要求2所述的复合白色颜料,其特征在于,上述第一白色颜料包含厚度为200~250nm的基质,上述第二白色颜料包含厚度为300~350nm的基质。
4.根据权利要求1所述的复合白色颜料,其特征在于,上述白色金属氧化物层包括:
第一高折射层,形成于上述基材的表面,并包含TiO2
低折射层,形成于上述第一高折射层上,并包含折射率低于TiO2的物质;以及
第二高折射层,形成于上述低折射层上,并包含TiO2
5.根据权利要求4所述的复合白色颜料,其特征在于,当上述第一高折射层的厚度为T1且上述第二高折射层的厚度为T2时,T2>T1。
6.根据权利要求1所述的复合白色颜料,其特征在于,上述第二白色颜料的白色金属氧化物层的最小厚度比上述第一白色颜料的白色金属氧化物层的最大厚度大60nm以上。
7.根据权利要求6所述的复合白色颜料,其特征在于,上述第一白色颜料包含厚度为30~80nm的白色金属氧化物层,上述第二白色颜料包含厚度为100~160nm的白色金属氧化物层。
8.根据权利要求1所述的复合白色颜料,其特征在于,
上述白色金属氧化物层包括:
第一高折射层,形成于上述基材的表面,并包含TiO2
低折射层,形成于上述第一高折射层上,并包含折射率低于TiO2的物质;以及
第二高折射层,形成于上述低折射层上,并包含TiO2
当上述第一高折射层的厚度为T1且上述第二高折射层的厚度为T2时,对于第一白色颜料,2T1>T2≥T1,对于第二白色颜料,3T1≥T2≥2T1。
9.根据权利要求4或8所述的复合白色颜料,其特征在于,上述第一高折射层和上述第二高折射层包含TiO2
10.根据权利要求4或8所述的复合白色颜料,其特征在于,上述低折射层包含SiO2及MgO·SiO2中的一种以上。
11.根据权利要求1至8中任一项所述的复合白色颜料,其特征在于,上述基质选自天然云母、合成云母、玻璃片及氧化铝片中。
12.一种干涉颜料,其特征在于,权利要求1至8中任一项所述的复合白色颜料用在选自涂料、印刷用油墨、地板革、壁纸、特种纸、塑料、皮革、饰品、化妆品、陶瓷及人造大理石中的至少一种。
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