CN108203560A - 具有磷酸官能化胶乳粒子和酸官能化分散剂的涂料组合物 - Google Patents

具有磷酸官能化胶乳粒子和酸官能化分散剂的涂料组合物 Download PDF

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CN108203560A
CN108203560A CN201711195592.7A CN201711195592A CN108203560A CN 108203560 A CN108203560 A CN 108203560A CN 201711195592 A CN201711195592 A CN 201711195592A CN 108203560 A CN108203560 A CN 108203560A
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salt
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J·德罗契尔
K·J·亨德森
A·K·范戴克
J·杨
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Rohm and Haas Co
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Abstract

本发明涉及一种组合物，其包含：a)以下的水性分散液：i)被磷酸单体的结构单元官能化的聚合物粒子；和ii)TiO2粒子；b)硫酸官能化分散剂；和c)羧酸官能化分散剂。本发明组合物通过提供一种相对较容易地调节TiO2‑粘结剂复合物形成效率的方式来解决所属领域中的需求。

Description

具有磷酸官能化胶乳粒子和酸官能化分散剂的涂料组合物
背景技术
本发明涉及一种涂料组合物，其包含磷酸官能化胶乳粒子、TiO2粒子、硫酸官能化分散剂和羧酸官能化分散剂。
TiO2粒子在涂膜中的分布的改进是涂料行业中的长期目标。随着调配物中的TiO2浓度增加，由于TiO2“聚集(crowding)”会观察到不透明度递减效果(diminishing opacityreturn)，其中TiO2粒子群充当单一的略微较大的TiO2粒子而不会呈独立的分散中心形式。已证明含甲基丙烯酸磷酸乙酯(PEM)的粘结剂在解决这一问题方面极为有用，因为其吸附于TiO2粒子的表面，产生更好的间距，并且因此产生较好的分散效率。这一经改进的间距使得调配者可使用相同量的TiO2来增强性能或以较低TiO2量满足不透明度。
在实践中，必须恰当地调节粘结剂吸附于TiO2的动力学以获得这些改进。如果吸附过于缓慢，那么在涂料制造工艺期间将不会出现明显吸附；由此不透明度将与使用常规粘结剂所获得的不透明度没有区别，或在涂料已完全调配好之后，复合物形成仍将持续进行，引起储存期间粘度显著上升。在另一方面，如果粘结剂吸附过快，那么将会形成粘结剂和TiO2的大聚集物(粗粒)，造成较低不透明度、较低光泽度和较差表面平滑度。当以恰当方式优化动力学时，大多数复合粒子将由吸附于离散，非聚结TiO2粒子的胶乳粒子组成，由此产生较高不透明度。
特定TiO2/乳胶配对的吸附动力学很大程度上取决于两种物质的表面化学反应。因此，粘结剂供应商必须制造出一系列涂料制造商可能想要使用的产品，所述产品具有不同PEM量以供与全范围TiO2等级一起使用。另外，在不同样切换其使用的粘结剂等级的情况下，涂料制造商可能不能够切换TiO2等级以利用TiO2价格或可用性。因此，为调配者提供易于优化大量吸附粘结剂和TiO2等级的吸附动力学的方式将为所属领域中的一项优势。
发明内容
本发明通过提供一种包含以下的组合物来解决所属领域中的需求：
a)以下的水性分散液：
i)聚合物粒子，其被以聚合物粒子的重量计，0.1到2重量百分比的磷酸单体或其盐的结构单元官能化；和
ii)TiO2粒子；
b)第一分散剂，其Mn在500到20,000道尔顿范围内，并且包含以所述第一分散剂的重量计，50到100重量百分比的硫酸单体或其盐的结构单元；和
c)第二分散剂，其Mn在300到50,000道尔顿范围内，并且包含以所述第二分散剂的重量计，20到100重量百分比的羧酸单体或其盐的结构单元；
其中第一分散剂与第二分散剂的重量:重量比为25:75到90:10；并且其中以聚合物粒子和TiO2粒子的重量计，第一分散剂与第二分散剂的重量百分比为0.1到10重量百分比。
本发明组合物通过提供一种相对较容易地调节TiO2-粘结剂复合物形成效率的方式来解决所属领域中的需求。
具体实施方式
本发明为一种组合物，其包含：
a)以下的水性分散液：
i)聚合物粒子，其被以聚合物粒子的重量计，0.1到2重量百分比的磷酸单体的结构单元官能化；和
ii)TiO2粒子；
b)第一分散剂，其Mn在500到20,000道尔顿范围内，并且包含以所述第一分散剂的重量计，50到100重量百分比的硫酸单体或其盐的结构单元；和
c)第二分散剂，其Mn在300到50,000道尔顿范围内，并且包含以所述第二分散剂的重量计，20到100重量百分比的羧酸单体或其盐的结构单元；
其中第一分散剂与第二分散剂的重量:重量比为25:75到90:10；并且其中以聚合物粒子和TiO2粒子的重量计，第一分散剂与第二分散剂的重量百分比为0.1到10重量百分比。
被磷酸单体或其盐的结构单元官能化的聚合物粒子优选为丙烯酸、苯乙烯-丙烯酸、或乙烯基酯-丙烯酸(更确切地说，乙酸乙烯酯-丙烯酸)聚合物粒子。聚合物粒子优选进一步包含以下一种或多种单体的结构单元：甲基丙烯酸甲酯、丙烯酸丁酯、丙烯酸乙酯、丙烯酸2-乙基己酯、脲基甲基丙烯酸酯(ureido methacrylate)、苯乙烯、乙酸乙烯酯和叔碳酸乙烯酯。聚合物粒子还可包括以下其它单体中的一种或多种的结构单元：如甲基丙烯酸烯丙酯、二乙烯基苯、二丙酮丙烯酰胺和甲基丙烯酸乙酰乙酰氧基乙酯。以组合物的重量计，聚合物粒子的浓度优选在10，更优选20，并且最优选30到50重量百分比范围内。如通过动态光散射使用布鲁克海文(Brookhaven)90Plus粒径分析仪所测量，聚合物粒子的粒径优选在60nm，更优选80nm到400nm，更优选到300nm，并且最优选到200nm范围内。
以经磷酸单体官能化的聚合物粒子的重量计，磷酸单体的重量百分比为优选0.2重量百分比到优选1，更优选到0.8，并且最优选到0.5重量百分比。如本文所用，术语“磷酸单体”是指含有至少一个磷原子并且具有至少一个酸性质子的可聚合化合物。合适的磷酸单体类别的实例包括膦酸单体和其盐和乙醇的二氢磷酸酯和其盐，其中乙醇含有或经可聚合乙烯基或烯烃基取代。优选二氢磷酸酯为(甲基)丙烯酸羟烷酯的磷酸酯，其包括甲基丙烯酸磷酸乙酯(PEM)和甲基丙烯酸磷酸丙酯，其中甲基丙烯酸磷酸乙酯和其盐为尤其优选的。合适膦酸的实例为2-(甲基丙烯酰氧基)乙基膦酸或其盐。
如本文所用，术语“结构单元”是指所列举的单体聚合后所形成的基团。甲基丙烯酸磷酸乙酯的结构单元展示为：
其中虚线表示到聚合物主链的连接点；其中R为H或
以组合物的重量计，TiO2粒子的浓度优选在10，更优选20到70，更优选到60重量百分比范围内。
第一和第二分散剂可以所用比例溶于水。以第一分散剂的重量计，第一分散剂优选包含50到80重量百分比的硫酸单体，优选磺酸单体或其盐的结构单元。合适磺酸单体的实例包括2-丙烯酰胺基-2-甲基丙烷磺酸(AMPS)和其盐、乙烯基磺酸和其盐、丙烯酸2-磺乙酯、甲基丙烯酸2-磺乙酯、3-丙烯酸磺丙酯、甲基丙烯酸3-磺丙酯、苯乙烯磺酸钠和2-丙烯-1-磺酸和其盐以及其组合。尤其优选的磺酸单体为2-丙烯酰胺基-2-甲基丙烷磺酸(AMPS)或其盐。
以第一分散剂的重量计，第一分散剂优选包含15到45重量百分比的一种或多种辅助单体的结构单元。实例包括丙烯酸酯和甲基丙烯酸酯，如甲基丙烯酸甲酯、丙烯酸乙酯、丙烯酸丁酯、丙烯酸乙基己酯、甲基丙烯酸羟乙酯、丙烯酸羟乙酯和丙烯酸2-羟丙酯；羧酸单体，如丙烯酸和甲基丙烯酸；丙烯酸二烷氨基烷酯和甲基丙烯酸二烷氨基烷酯，包括甲基丙烯酸2-(N,N-二甲氨基)乙酯(DMAEMA)、丙烯酸2-(N,N-二甲氨基)乙酯、甲基丙烯酸2-(N,N-二乙氨基)乙酯、丙烯酸2-(N,N-二乙氨基)乙酯、甲基丙烯酸2-(叔丁基氨基)乙酯、丙烯酸3-(二甲氨基)丙酯、甲基丙烯酸2-二异丙基氨基乙酯和丙烯酸3-二甲氨基新戊基酯；聚亚烷基二醇丙烯酸酯和甲基丙烯酸酯，包括聚(乙二醇)甲基丙烯酸酯、聚(乙二醇)丙烯酸酯和月桂基-O-(CH2CH2O)23-甲基丙烯酸酯；二烷氨基烷基丙烯酰胺和甲基丙烯酰胺，包括N-[2(N,N-二甲氨基乙基]甲基丙烯酰胺、N-[3-(N,N-二甲氨基)丙基]丙烯酰胺和N-[3-(N,N-二甲氨基)丙基]甲基丙烯酰胺；丙烯酰胺基三烷基铵卤化物，包括[2-(丙烯酰氧基)乙基]三甲基铵氯化物、[2-(甲基丙烯酰氧基)乙基]三甲基铵氯化物和3-(甲基丙烯酰胺基丙基)三甲基铵氯化物。优选辅助单体包括丙烯酸2-羟丙酯、甲基丙烯酸羟乙酯和丙烯酸羟乙酯。
第一分散剂的数均分子量(Mn)在500，优选750并且更优选1000道尔顿到20,000，优选到10,000，并且更优选到5000道尔顿范围内。第二分散剂的数均分子量(Mn)在300，优选500并且更优选1000道尔顿到50,000，优选到20,000，更优选到10,000并且更优选到5000道尔顿范围内
以第二分散剂的重量计，第二分散剂优选包含40，更优选50重量百分比的羧酸单体或其盐的结构单元。合适酸单体的实例包括丙烯酸、甲基丙烯酸和衣康酸(itaconicacid)。酐，如顺丁烯二酸酐同样为合适的，因为其在水解后会形成酸酸单体(顺丁烯二酸)的结构单元。第二分散剂优选包括15，更优选20到50，更优选到45重量百分比的辅助单体，如描述为适于第一分散剂的那些辅助单体中的一种或多种的结构单元。优选辅助单体的实例包括二异丁烯、顺丁烯二酸酐、甲基丙烯酸丁酯、苯乙烯、丙烯酸2-羟丙酯、甲基丙烯酸羟乙酯和丙烯酸羟乙酯。
第一分散剂与第二分散剂的重量:重量比为优选35:65，更优选40:60，最优选45:55到优选85:15，更优选到80:20。优选地，以聚合物粒子和TiO2粒子的重量计，第一和第二分散剂的总重量百分比在0.2到5重量百分比范围内。同样优选地，以总分散剂的重量计，组合分散剂中的羧酸官能团的总浓度为11，更优选至少15重量百分比到55，更优选到45并且最优选40重量百分比。
本发明的涂料组合物宜通过在第一和第二分散剂存在下在高剪切下首先分散TiO2以形成研磨物而制备。可以通过分散剂稳定化的预分散浆液形式另外提供TiO2，或可在包含分散剂的多种研磨物或浆液之间分布颜料。这些颜料分散液随后与聚合物粒子的磷酸官能化分散液接触以促进聚合物粒子吸附于TiO2粒子的表面上。组合物可进一步包含未被磷酸单体或其盐的结构单元官能化的聚合物粒子。尽管并非优选的，但将聚合物粒子的分散液添加到颜料分散液中也为可能的。随后充分搅拌混合物以使吸附于颜料粒子上的聚合物粒子达到最大，随后添加剩余涂料成分。
或者，可紧接在合并颜料分散液与聚合物粒子之后、期间或之前添加这些成分。第一和第二分散剂的组合提供控制涂料调配物中聚合物粒子吸附到TiO2粒子的动力学的机制，由此减少动力学过于缓慢情况下的粘度向上浮动，或减少动力学过快情况下的粗粒形成。本发明因此使得可通过仅改变所用分散剂比率来使用单一磷酸官能化粘结剂等级与一系列TiO2等级。此外，已发现磷酸基，尤其由甲基丙烯酸磷酸乙酯产生的磷酸基的负载量可显著减小而不会遭受遮盖力(S/mil)损失。
本发明组合物可进一步包含以下中的一种或多种：流变改质剂、填充剂、着色剂、表面活性剂、消泡剂、防腐剂和中和剂。
在另一方面中，本发明为一种包含以下的组合物：a)复合粒子，其为吸附到TiO2粒子的磷酸官能化聚合物粒子，和b)第一和第二分散剂的水性分散液。
实例
缩写
2-丙烯酰胺基-2-甲基丙烷磺酸 AMPS
丙烯酸正丁酯 BA
丙烯酸羟丙酯 HPA
甲基丙烯酸 MAA
丙烯酸 AA
甲基丙烯酸甲酯 MMA
甲基丙烯酸磷酸乙酯 PEM
脲基甲基丙烯酸酯 UMA
过硫酸钠 NaPS
多分散性指数 PDI
在以下实例中，ACRYSOLTM和TERGITOLTM为陶氏化学公司(Dow Chemical Company)或其附属公司的商标。分散剂1和2通过常规自由基聚合制备。
中间物实例1-0.3％PEM粘结剂的制备
通过混合DI水(157.6g)、月桂醇醚硫酸钠(26.0g，31％活性)、BA(253.9g)、MMA(216.0g)、MAA(14.5g)和PEM(8.5g，60％活性)制备阶段1单体乳液(ME1)。通过混合DI水(305.5g)、月桂醇醚硫酸钠(36.0g，31％活性)、BA(579.5g)、MMA(560.8g)和MAA(9.5g)制备阶段2单体乳液(ME2)。向配备有桨式搅拌器、热电偶、N2入口和回流冷凝器的5L四颈圆底烧瓶中添加DI水(796.3g)和月桂醇醚硫酸钠(5.0g，31％活性)并且开始加以搅拌。在N2下将烧瓶的内含物加热到85℃并将ME1的一部分(100.0g)添加到锅中，随后进行DI水(40g)冲洗。搅拌内含物1min，在此之后添加NaPS(3.5g)于DI水(10g)中的溶液，随后进行DI水(10g)冲洗。再5min之后，历时30min将ME1的其余部分添加到烧瓶中。同时，以0.7g/min的速率将NaPS(3.3g)于DI水(72.0g)中的溶液单独地进给到烧瓶。完成添加ME1进料之后，添加作为冲洗液的DI水(20g)并将于DI水(10g)中的氨水(12.40g，30％活性)添加到共进料中。随后历时90min将ME2添加到烧瓶中，同时在这一添加期间添加UMA(44.1g，50％活性)的水溶液和于BA(21.3g，40％活性二苯甲酮)中的二苯甲酮溶液。完成进给ME2之后，添加作为冲洗液的DI水(85g)。在添加期间将烧瓶的内含物维持在85℃到87℃下。随后连同DI水冲洗液(10g)添加硫酸铁七水合物(0.02g)和乙二胺四乙酸四钠盐(0.02g)于DI水(21.8g)中的溶液，在此之后将批料冷却到30℃，同时将氧化还原对添加到锅中以降低残余单体含量。在添加氧化还原对并且内含物达到30℃-40℃之间的温度之后，添加氨水(9.80g，浓度28％)于DI水(30g)中的溶液。随后添加杀生物剂。发现粒径为98nm并且固体为48.5％，pH为8.8。
中间物实例2-0.6％PEM粘结剂的制备
大体上如针对中间物实例1粘结剂所述制备中间物实例2粘结剂，不同之处在于ME1中使用MAA(11.0g)和PEM(16.9g，60％活性)。发现粒径为96nm并且固体为49.0％，pH为8.4。
中间物实例3-1.2％PEM粘结剂的制备
大体上如针对中间物实例1粘结剂所述制备中间物实例3粘结剂，不同之处在于ME1中使用MAA(4.1g)和PEM(33.8g，60％活性)。发现粒径为91nm，固体含量为48.5％，和pH8.3。
中间物实例4-分散剂研磨掺合物，25/75分散剂掺合物的制备
以25:75的分散剂1:分散剂2w/w比率将分散剂1(63.2％AMPS/35.3％HPA/1.5％AA，30％固体，Mn＝1600g/mol，PDI＝3.2)和分散剂2(60％AA/40％HPA，30％固体，Mn＝2300g/mol，PDI＝1.5)掺合于100-MAX速度混合杯(100-MAX Speed Mixer Cup)(总量0.38g，于15.4-17.4g水中)中。将干燥级TiO2(76.5g)添加到杯中并且以2200rpm将内含物混合于速度混合器中持续2min。将水添加到混合物中以得到100g总量并继续混合1min。
实例1-具有0.5％PEM官能化粘结剂和25/75分散剂掺合物的涂料调配物
将来自中间物实例1的含PEM粘结剂(56.9g)添加到1品脱塑料容器中。将来自中间物实例4的研磨制备物的一部分(24.5g)添加到容器中并混合内含物10min。将这一混合物的一部分(48.6g)添加到60-MAX快速混合杯中的预混合调漆(Texanol聚结剂(22.3g)、亚乐顺(ACRYSOL)RM-2020E流变改质剂(22.4g)、亚乐顺RM-825流变改质剂(0.6g)、TERGITOL15-S-9表面活性剂(4.0g)和水(141.4g))的一部分(11.4g)中，并且以2200rpm混合内含物2min。使涂料平衡隔夜，之后制得刮涂膜供用于遮盖力量测。
库贝尔卡-芒克S/mil遮盖力测试方法(Kubelka-Munk S/mil Hiding Test Method)
对于每种涂料，使用1.5密耳伯德(Bird)刮涂棒在黑色释放卡(Black ReleaseChart)(莱纳塔形式(Leneta Form)RC-BC)上制备两个刮涂物，并且允许所述卡干燥过夜。使用模板，在每个卡上用X-ACTO刀具切出3.25"×4"矩形。使用毕克加特纳(BYKGardner)Spectro-guide 45/0Gloss Color分光光度计在划线区中的每一个处测量Y-反射率五次，其在起始于矩形顶部处的对角线进行测量，并且记录平均Y-反射率。使用3"25密耳阻塞刮涂棒在黑色乙烯基卡(Black Vinyl Chart)(莱纳塔形式(Leneta Form)P121-10N)上制备每种涂料的厚膜刮涂物，并且允许所述卡干燥过夜。在刮涂物的五个不同区域中测量Y-反射率，并且记录平均Y-反射率。通过以下等式1给出库贝尔卡-芒克遮盖力值S：
等式1
其中X是平均膜厚度，R是厚膜的平均反射率，并且RB是在薄膜的黑色上方的平均反射率。X可以由涂膜的重量(Wpf)；干膜的密度(D)；和膜面积(A)计算。3.25"×4"模板的膜面积是13in2。
用两种不同类型的TiO2、来自中间物实例1、2和3的含PEM胶乳和范围介于0:100到90:10的分散剂1:分散剂2比率来制备涂料调配物。表1显示这些变量对S/mil的影响，并且表2显示组合分散剂的官能团的分布。Int.Ex.No.是指所用含PEM乳胶的中间物实例编号；分散剂1是指63.2％AMPS/35.3％HPA/1.5％AA；并且分散剂2是指(60％AA/40％HPA)。
表1-含PEM官能化乳胶和分散剂的涂料的遮盖力数据
表2-分散剂组合物
实例编号 Int.Ex.No. AMPS(％) AA(％) HPA(％)
组合物1 1 0 60 40
组合物2 2 0 60 40
组合物3 2 0 60 40
组合物4 3 0 60 40
组合物5 3 0 60 40
实例1A 1 15.8 45.4 38.8
实例1B 1 31.6 30.7 37.7
实例1C 1 47.4 16.1 36.5
实例1D 1 56.9 7.3 35.8
实例2A 2 15.8 45.4 38.8
实例2B 2 31.6 30.7 37.7
实例2C 2 47.4 16.1 36.5
实例2D 2 56.9 7.3 35.8
实例3A 2 15.8 45.4 38.8
实例3B 2 31.6 30.7 37.7
数据显示，与分散剂1和分散剂2的组合一起制得的研磨物随分散剂1含量增加而不断地改进干膜不透明度。对于这些实例，使用分散剂1作为唯一分散剂的1.2％PEM粘结剂(中间物实例3)展现与相同分散剂总负载量下使用50:50两种分散剂的混合物的0.6％PEM和0.3％PEM样品大致相同的遮盖力。因此，两种分散剂的组合在某种程度上为有利的，因为可利用胶乳粒子中降低50％到75％的PEM实现相同遮盖力。增加分散剂1的负载量会在较高水平下产生降低效果，因为膜遮盖力接近最大值；这一发现为有价值的，因为已发现优化含硫酸分散剂的最低负载量下的S/mil会在最终调配涂料中减少粗粒形成。

Claims (10)

1.一种组合物，其包含：
a)以下的水性分散液：
i)聚合物粒子，其被以所述聚合物粒子的重量计，0.1到2重量百分比的磷酸单体或其盐的结构单元官能化；和
ii)TiO2粒子；
b)第一分散剂，其Mn在500到20,000道尔顿范围内，并且包含以所述第一分散剂的重量计，50到100重量百分比的硫酸单体或其盐的结构单元；和
c)第二分散剂，其Mn在300到50,000道尔顿范围内，并且包含以所述第二分散剂的重量计，20到100重量百分比的羧酸单体或其盐的结构单元；
其中所述第一分散剂与所述第二分散剂的重量:重量比为25:75到90:10；并且其中以所述聚合物粒子和所述TiO2粒子的重量计，所述第一分散剂与所述第二分散剂的重量百分比为0.1到10重量百分比。
2.根据权利要求1所述的组合物，其中所述聚合物粒子被以所述聚合物粒子的重量计，0.2到0.8重量百分比的磷酸单体或其盐的结构单元官能化；其中所述聚合物粒子为丙烯酸、苯乙烯-丙烯酸、或乙烯基酯-丙烯酸聚合物粒子，其中以所述组合物的重量计，所述聚合物粒子的浓度在10到50重量百分比范围内；并且其中以所述组合物的重量计，所述TiO2粒子的浓度在10到70重量百分比范围内。
3.根据权利要求1或2中任一项所述的组合物，其中所述第一分散剂的Mn在750到5,000道尔顿范围内，并且包含以所述第一分散剂的重量计，50到80重量百分比的硫酸单体或其盐的结构单元，其中所述硫酸单体为磺酸单体；其中所述第二分散剂的Mn在500到10,000道尔顿范围内，并且包含以所述第二分散剂的重量计，40到100重量百分比的羧酸单体或其盐的结构单元；其中所述第一分散剂与所述第二分散剂的重量:重量比为35:65到85:15；并且其中以所述聚合物粒子和所述TiO2粒子的重量计，所述第一分散剂和所述第二分散剂的重量百分比为0.2到5重量百分比。
4.根据权利要求3所述的组合物，其中以所述第一分散剂的重量计，所述第一分散剂包含15到45重量百分比的选自由以下组成的群组的单体的结构单元：丙烯酸2-羟丙酯、甲基丙烯酸羟乙酯和丙烯酸羟乙酯；其中所述磺酸单体为2-丙烯酰胺基-2-甲基丙烷磺酸或其盐；并且其中以所述第二分散剂的重量计，所述第二分散剂包含15到45重量百分比的选自由以下组成的群组的单体的结构单元：丙烯酸2-羟丙酯、甲基丙烯酸羟乙酯和丙烯酸羟乙酯；其中所述羧酸单体或其盐为丙烯酸、甲基丙烯酸、或衣康酸(itaconic acid)或其盐。
5.根据权利要求4所述的组合物，其中所述羧酸单体为丙烯酸或其盐，其中所述第一分散剂包含15到45重量百分比的丙烯酸2-羟丙酯的结构单元。
6.根据权利要求5所述的组合物，其中所述聚合物粒子包含甲基丙烯酸甲酯、丙烯酸丁酯和甲基丙烯酸或其盐的结构单元，其中以所述聚合物粒子的重量计，所述磷酸单体或其盐的浓度在0.2到0.5重量百分比范围内；其中所述磷酸单体为甲基丙烯酸磷酸乙酯或其盐；并且其中以所述组合物的重量计，所述聚合物粒子的浓度在30到50重量百分比范围内。
7.根据权利要求6所述的组合物，其中所述第一分散剂与所述第二分散剂的重量:重量比为40:60到80:20。
8.根据权利要求1所述的组合物，其中以总分散剂的重量计，组合分散剂中的羧酸官能团的总浓度为11到55。
9.根据权利要求1所述的组合物，其进一步包含选自由以下组成的群组的一种或多种组分：流变改质剂、填充剂、着色剂、表面活性剂、消泡剂、防腐剂和中和剂。
10.一种组合物，其包含以下的水性分散液：a)复合粒子，其为吸附到TiO2粒子的磷酸官能化聚合物粒子；b)第一分散剂；和c)第二分散剂；其中所述磷酸官能化聚合物粒子被以所述聚合物粒子的重量计，0.1到2重量百分比的磷酸单体或其盐的结构单元官能化；
其中所述第一分散剂的Mn在500到20,000道尔顿范围内，并且包含以所述第一分散剂的重量计，50到100重量百分比的硫酸单体或其盐的结构单元；和
其中所述第二分散剂的Mn在300到50,000道尔顿范围内，并且包含以所述第二分散剂的重量计，20到100重量百分比的羧酸单体或其盐的结构单元；
其中所述第一分散剂与所述第二分散剂的重量:重量比为25:75到90:10；其中以所述聚合物粒子和所述TiO2粒子的重量计，所述第一分散剂和所述第二分散剂的重量百分比为0.1到10重量百分比；并且其中以总分散剂的重量计，所述组合分散剂中的羧酸官能团的总浓度为11到55。
CN201711195592.7A 2016-12-16 2017-11-24 具有磷酸官能化胶乳粒子和酸官能化分散剂的涂料组合物 Pending CN108203560A (zh)

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