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CN109415477B - 用于抗压粘性和开放时间的包含聚醚-氨酯-脲添加剂的组合物 - Google Patents

用于抗压粘性和开放时间的包含聚醚-氨酯-脲添加剂的组合物 Download PDF

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CN109415477B
CN109415477B CN201780039082.2A CN201780039082A CN109415477B CN 109415477 B CN109415477 B CN 109415477B CN 201780039082 A CN201780039082 A CN 201780039082A CN 109415477 B CN109415477 B CN 109415477B
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CN109415477A (zh
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D·J·布伦南
G·卡多恩
J·德罗契尔
J·J·拉巴斯克
A·K·范戴克
K·耶昂
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Dow Global Technologies LLC
Rohm and Haas Co
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Abstract

一种组合物,其包含:(a)亲水性聚氨酯,其包含以下的聚合单元:(i)羟基官能度为2至4且重均分子量为800至16,000的水溶性多元醇,和(ii)异氰酸酯官能度为2至6的脂肪族聚异氰酸酯,其中聚合环氧乙烷单元占所述亲水性聚氨酯的至少85重量%;以及以下中的至少一种:(b)具有至少5个羟基且Mw为300至4,000的糖类;(c)Mw为700至50,000且具有10至55重量%的C3‑C6羧酸单体的聚合残基的分散剂聚合物和(d)HLB>11且具有12个至100个环氧乙烷的聚合单元的表面活性剂。

Description

用于抗压粘性和开放时间的包含聚醚-氨酯-脲添加剂的组 合物
技术领域
本发明涉及含有聚醚-氨酯-脲(PEUU)添加剂的组合物,其改善乳胶漆的开放时间,而不对抗压粘性产生显著负面影响。
背景技术
由聚异氰酸酯和/或二异氰酸酯和二醇产生的疏水改性的氨酯增稠剂(HEUR)称作含有疏水性基团的水溶性聚合物。其归类为缔合型增稠剂并经常用于乳胶漆制剂中,其中疏水性基团吸附到乳胶颗粒表面上,在较宽的剪切速率范围内产生粘度增加和期望的流变特性。例如,US4079028公开HEUR增稠剂。
然而,乳胶漆的开放时间通常存在疑难,所述开放时间定义为其中在不妨碍成膜或改变物理外观的情况下可以在新施涂的湿漆膜上重新涂刷的时间段。
因此,改善开放时间而不对抗压粘性产生显著负面影响将是乳胶漆制剂领域的进步。
发明内容
本发明涉及一种组合物,其包含:(a)亲水性聚氨酯,其包含以下的聚合单元:(i)羟基官能度为2至4且重均分子量为800至16,000的水溶性多元醇,和(ii)异氰酸酯官能度为2至6的脂肪族聚异氰酸酯,其中聚合环氧乙烷单元占所述亲水性聚氨酯的至少85重量%;以及以下中的至少一种:(b)具有至少5个羟基且Mw为300至4,000的糖类;(c)Mw为700至50,000且具有10至55重量%的C3-C6羧酸单体的聚合残基的分散剂聚合物和(d)HLB>11且具有12个至100个环氧乙烷的聚合单元的表面活性剂。
具体实施方式
除非另有规定,否则所有百分比都是重量百分比(重量%)且所有温度都以℃为单位。除非另有规定,否则所有操作都在室温(20-25℃)下进行。如本文所用,术语“(甲基)丙烯酸”是指丙烯酸或甲基丙烯酸。术语“(甲基)丙烯酰胺”是指丙烯酰胺(AM)和/或甲基丙烯酰胺(MAM)。“C3-C6羧酸单体”是具有一个或两个羧酸基团的单烯系不饱和化合物,例如(甲基)丙烯酸、顺丁烯二酸、反丁烯二酸、衣康酸、顺丁烯二酸酐、巴豆酸、顺丁烯二酸单酰胺等。
丙烯酸类单体包括(甲基)丙烯酸和其C1-C25烷基、芳烷基或羟烷基酯、巴豆酸、衣康酸、反丁烯二酸、顺丁烯二酸、顺丁烯二酸酐、(甲基)丙烯酰胺、(甲基)丙烯腈和巴豆酸、衣康酸、反丁烯二酸、顺丁烯二酸或顺丁烯二酸单酰胺的烷基或羟烷基酯。苯乙烯类单体包括苯乙烯、α-甲基苯乙烯、4-甲基苯乙烯、2-甲基苯乙烯、3-甲基苯乙烯、4-甲氧基苯乙烯、2-羟甲基苯乙烯、4-乙基苯乙烯、4-乙氧基苯乙烯、3,4-二甲基苯乙烯、2-氯苯乙烯、3-氯苯乙烯、4-氯-3-甲基苯乙烯、4-叔丁基苯乙烯、2,4-二氯苯乙烯、2,6-二氯苯乙烯和1-乙烯基萘;优选地苯乙烯和α-甲基苯乙烯。
如本文所用,术语“水溶性多元醇”是指一种或多种聚环氧乙烷、水溶性聚环氧乙烷/聚环氧丙烷共聚物、水溶性聚环氧乙烷/聚环氧丁烷共聚物、水溶性聚环氧乙烷/聚环氧丙烷/聚环氧丁烷三元共聚物以及包含C3-C8三醇(例如甘油、三羟甲基丙烷)的聚合单元及环氧乙烷、环氧丙烷和环氧丁烷中的至少一种的聚合单元的水溶性多元醇。如本文所用,术语“水溶性”意指以溶液的总重量计,可溶于水的量至少达10重量%范围(优选地20重量%)。本文所用,术语“聚异氰酸酯”是指每分子具有至少两个异氰酸酯基团的异氰酸酯源。术语“脂肪族聚异氰酸酯”是指非芳香族聚异氰酸酯,即非环状脂肪族以及环状脂肪族聚异氰酸酯。“糖类”是单一糖(单糖)或包含通过糖苷键结合在一起的两个或更多个单糖单元的多糖。糖类可以通过取代其羟基以将羟基转化为其它官能团而官能化,例如通过与苯基缩水甘油醚反应。
优选水溶性多元醇的羟基官能度为二至三,优选地二。优选地,水溶性多元醇的重均分子量(Mw)在900至16,000道尔顿(Dalton)、优选地1,000至12,000、优选地1,000至10,000范围内。优选水溶性多元醇包括聚乙二醇和乙氧基化的甘油。聚乙二醇可包括至多15重量%的C3-C4氧化烯的聚合单元,优选地不大于10重量%、优选地不大于5重量%、优选地不大于2重量%。聚乙二醇可包括在一端用C1-C4烷基(优选地甲基)封端的环氧乙烷聚合物。优选地,聚乙二醇的重均分子量(Mw)在4,000至16,000道尔顿、优选地4,000至12,000、优选地6,000至10,000范围内。合适的聚乙二醇的实例为以CARBOWAXTM 8000聚乙二醇(陶氏化学公司(The Dow Chemical Company)或其附属公司的商标)市售的PEG 8000。Mw通过下述尺寸排阻色谱(Size Exclusion Chromatography,SEC)方法测量。优选地,乙氧基化的甘油的Mw为800至1600,优选地1000至1400。在一个优选实施例中,聚合物进一步包含聚乙二醇单C1-C4烷基醚以及羟基官能度为二至三的多元醇的聚合单元。
优选地,亲水性聚氨酯的疏水性末端或连接部分的计算logP(cLogP)为-1.5至4.5;优选地-1.3至4.3。优选地,亲水性聚氨酯增稠剂还包含脲和/或缩二脲和/或脲基甲酸酯基团。例如,当在亲水性聚氨酯的制备期间使用如胺或水的反应物时形成脲基团。
优选地,水溶性多元醇具有至少90重量%的环氧乙烷的聚合单元,优选地至少92重量%、优选地至少94重量%、优选地至少95重量%;优选地不大于99.5重量%、优选地不大于99重量%、优选地不大于98.5重量%。环氧乙烷的聚合单元的百分比按固体基计算,即不考虑非反应性溶剂的聚合物的干重。
优选地,亲水性聚氨酯聚合物包含0.5至5重量%的水溶性多元醇的聚合单元,所述水溶性多元醇包含C3-C8三醇(例如甘油、三羟甲基丙烷)以及环氧乙烷、环氧丙烷和环氧丁烷中的至少一种的聚合单元;优选地1至4重量%。优选地,水溶性多元醇具有至少75重量%的环氧乙烷单元,优选地至少85重量%。
优选地,聚异氰酸酯的异氰酸酯官能度为二至五,优选地2至4。合适的二异氰酸酯的实例包括1,4-四亚甲基二异氰酸酯、1,6-六亚甲基二异氰酸酯(HDI)和其低聚物(例如1,3,5-三(6-异氰酸根合己基)1,3,5-三嗪-2,4,6(1H,3H,5H)-三酮(HDI三聚体)和IPDI三聚体)、2,2,4-三甲基-1,6-二异氰酸根合己烷、1,10-十亚甲基二异氰酸酯、4,4'-亚甲基双(异氰酸根合环己烷)(H12MDI)、2,4'-亚甲基双(异氰酸根合环己烷)、1,4-亚环己基二异氰酸酯和1-异氰酸根合-3-异氰酸根合甲基-3,5,5-三甲基环己烷(IPDI)。
已出乎意料地发现聚合环氧乙烷单元百分比和聚环氧乙烷平均分子量的乘积与在本发明的聚氨酯的开放时间性能改善相关。聚环氧乙烷(PEO)平均分子量是聚氨酯中聚环氧乙烷单元的分子量的重量平均(Mw)。例如,具有相同重量的Mw值为8,000和2,000的聚环氧乙烷的聚氨酯的聚环氧乙烷平均分子量为5,000。优选地,聚合环氧乙烷单元百分比和聚环氧乙烷平均分子量的乘积为至少4,400,优选地至少4,500、优选地至少5,000、优选地至少6,000;优选地不大于12,000、优选地不大于10,000、优选地不大于9,000。
亲水性聚氨酯可通过在反应条件下使水溶性多元醇、脂肪族聚异氰酸酯和任选地以下中的一种或多种一起接触来制备:二醇单C1-C4烷基醚(例如用低级烷基(优选地甲基)封端的乙二醇、丙二醇和丁二醇中的一种或多种的聚合物)和二胺,优选地脂肪族二胺。优选地,二胺和二醇单C1-C4烷基醚中的至少一种是水溶性的。优选地,二胺是C2-C6二胺,优选地C2-C4二胺、优选地乙二胺。反应物加料的顺序可以如通常已知的合成氨酯聚合物那样变化。例如,所有反应物可以在单个合成步骤中一起反应,或反应物可以任何合成顺序反应以获得所需最终聚合物。如在生产氨酯聚合物的逐步增长聚合领域中所熟知的,成分的摩尔当量比用于控制此类性质如分子量。
优选地,亲水性聚氨酯聚合物的Mw为至少10,000,优选地至少16,000、优选地至少20,000、优选地至少30,000;优选地不大于2,000,000、优选地不大于1,500,000、优选地不大于500,000、优选地不大于200,000。
如本文所述产生的亲水性聚氨酯不仅仅是氨酯聚合物,还可以包括聚合物主链和脲键中的脲基甲酸酯分支点的组合。聚合物可进一步包括聚合物主链中的伯胺端基或缩二脲分支点或其组合。
优选地,糖类具有至少5个羟基,优选地至少8个。优选地,糖类每个糖环具有至少一个羟基,优选地至少两个。优选地,糖类是多糖,优选地具有2个至20个聚合单糖的多糖。优选地,糖类的Mw为至少340,优选地至少为500;优选地不大于3,000、优选地不大于2,000。尤其优选的糖类包括例如麦芽糊精和海藻糖。麦芽糊精具有以下结构:
Figure BDA0001916508150000051
其中m为1至30。优选地,m为至少5,优选地至少11、优选地至少15;优选地不大于24、优选地不大于20。优选地,每个单糖单元上不多于两个羟基被官能化,优选地不多于一个,其数量是算术平均值。
优选地,表面活性剂的HLB为至少11.5,优选地至少为12;优选地不大于20、优选地不大于16。优选地,表面活性剂具有至少13个环氧乙烷的聚合单元,优选地至少14个;优选地不大于50个、优选地不大于30个、优选地不大于25个、优选地不大于20个。在优选实施例中,表面活性剂是非离子型表面活性剂。
优选地,分散剂聚合物的Mw为至少1,500、优选地至少2,500、优选地至少3,500、优选地至少4,500;优选地不大于30,000、优选地不大于20,000、优选地不大于10,000。优选地,分散剂聚合物包含45至90重量%的丙烯酸类单体、苯乙烯类单体、二异丁烯或其组合的聚合残基;优选地至少50重量%、优选地至少55重量%、优选地至少60重量%;优选地不大于85重量%、优选地不大于80重量%。优选地,至少75重量%的丙烯酸类单体选自(甲基)丙烯酸C2-C18烷基酯和(甲基)丙烯酸苄酯,优选地至少85重量%;优选地(甲基)丙烯酸C4-C12烷基酯或(甲基)丙烯酸苄酯。
优选地,组合物包含20至80重量%的亲水性聚氨酯;优选地至少25重量%、优选地至少30重量%、优选地至少35重量%;优选地不大于75重量%、优选地不大于70重量%、优选地不大于65重量%。优选地,组合物包含20至80重量%的非离子型表面活性剂;优选地至少25重量%、优选地至少30重量%、优选地至少35重量%;优选地不大于70重量%、优选地不大于60重量%、优选地不大于50重量%。优选地,组合物包含20至80重量%的麦芽糊精;优选地至少25重量%、优选地至少30重量%、优选地至少35重量%;优选地不大于70重量%、优选地不大于60重量%、优选地不大于50重量%。优选地,组合物包含20至80重量%的分散剂聚合物;优选地至少25重量%、优选地至少30重量%、优选地至少35重量%;优选地不大于70重量%、优选地不大于60重量%、优选地不大于50重量%。
本发明还涉及一种乳胶漆,其含有0.1至5重量%的本发明的组合物。
优选地,乳胶漆包含至少0.2重量%的组合物,优选地至少0.3重量%、优选地至少0.4重量%、优选地至少0.5重量%;优选地不大于4重量%、优选地不大于3重量%。百分比以乳胶漆的总重量计。
优选地,乳胶漆包含0.05至2重量%的亲水性聚氨酯;优选地至少0.1重量%、优选地至少0.15重量%、优选地至少0.2重量%、优选地至少0.25重量%;优选地不大于1.5重量%、优选地不大于1重量%、优选地不大于0.7重量%、优选地不大于0.5重量%。优选地,乳胶漆包含0.05至2重量%的麦芽糊精;优选地至少0.1重量%、优选地至少0.15重量%、优选地至少0.2重量%、优选地至少0.25重量%;优选地不大于1.5重量%、优选地不大于1重量%、优选地不大于0.7重量%、优选地不大于0.5重量%。优选地,乳胶漆包含0.05至2重量%的非离子型表面活性剂;优选地至少0.1重量%、优选地至少0.15重量%、优选地至少0.2重量%、优选地至少0.25重量%;优选地不大于1.5重量%、优选地不大于1重量%、优选地不大于0.7重量%、优选地不大于0.5重量%。优选地,乳胶漆包含0.05至2重量%的分散剂聚合物;优选地至少0.1重量%、优选地至少0.15重量%、优选地至少0.2重量%、优选地至少0.25重量%;优选地不大于1.5重量%、优选地不大于1重量%、优选地不大于0.7重量%、优选地不大于0.5重量%。
本发明还涉及一种通过以上述量加入本发明的组合物来增加乳胶漆的开放时间而不对抗压粘性产生显著不利影响的方法。
实例
实例1
通过共沸蒸馏干燥聚乙二醇(8200g/mol,75.4g)的甲苯(220g)溶液。将溶液冷却至90℃后,分别加入DESMODUR N3600(含有70%三聚体的HDI三聚体和较少量的高级低聚物,总NCO官能度=3.1)(1.37g)和乙氧基化的甘油(1236g/mol,1.68g),并将溶液搅拌5分钟。将辛酸铋(0.19g)加入溶液中,并将反应混合物搅拌1小时。将反应混合物冷却至室温,并通过旋转蒸发去除溶剂。分离出聚合物,为白色固体。0.9PEG8000/0.3667N3600/0.2Gly-EO(26)。Mn=31,200;Mw=51,600Da
实例2
通过共沸蒸馏干燥聚乙二醇(8200g/mol,82.2g)的甲苯(202g)溶液。将溶液冷却至90℃后,加入乙二胺(0.075g),并将溶液搅拌5分钟。分别加入DESMODUR N3600(1.68g)和乙氧基化的甘油(1236g/mol,2.07g),并将反应混合物再搅拌5分钟。加入辛酸铋(0.21g),并将反应混合物搅拌1小时。将反应混合物冷却至室温,并通过旋转蒸发去除溶剂。分离出聚合物,为灰白色固体。0.8PEG8000/0.1乙二胺/0.3667N3600/0.2Gly-EO(26)。Mn=27,800;Mw=35,800Da
实例3
通过共沸蒸馏干燥聚乙二醇(8200g/mol,115.8g)的甲苯(216g)溶液。将溶液冷却至90℃后,加入DESMODUR W(H12MDI,11.66g),并将溶液搅拌5分钟。将辛酸铋(0.19g)加入溶液中,并将反应混合物搅拌1小时。将CARBOWAX MPEG2000(2000g/mol,129.1g)加入到搅拌的反应混合物中,并将混合物在90℃下再搅拌一小时。将反应混合物冷却至室温,并通过旋转蒸发去除溶剂。分离出聚合物,为白色固体。0.35PEG8000/1.1DesW//0.8MePEG2000。Mn=7,300;Mw=13,500Da
实例4
通过共沸蒸馏干燥聚乙二醇(8200g/mol,76.6g)的甲苯(216g)溶液。将溶液冷却至90℃后,加入DESMODUR H(HDI 4.94g)溶液,并将溶液搅拌5分钟。将辛酸铋(0.19g)加入溶液中,并将反应混合物搅拌1小时。将聚乙二醇(8200g/mol,175.1g)加入到搅拌的反应混合物中,并将混合物在90℃下再搅拌一小时。将反应混合物冷却至室温,并通过旋转蒸发去除溶剂。分离出聚合物,为白色固体。0.35E8000/1.1HDI//0.8PEG8000。Mn=16,500;Mw=34,500
实例5
将聚乙二醇(8200g/mol,1314.8g)在110℃、全室真空下在西格玛(Sigma)间歇式熔融反应器中混合2小时。将反应器冷却至90℃并用氮气吹扫后,分别将丁基化羟基甲苯(0.14g)和乙二胺(1.2g)加入反应器中,并将熔融混合物在90℃、氮气下混合5分钟。分别将DESMODUR N3600(26.9g)和乙氧基化的甘油(1236g/mol,33.0g)加入反应器中,并将反应混合物再混合5分钟。将辛酸铋(3.3g)加入反应器,并将反应混合物在90℃下混合10分钟。将所得熔融聚合物从反应器中取出并冷却至室温。0.8PEG8000/0.1乙二胺/0.3667N3600/0.2Gly-EO(26)。Mn=28,000;Mw=36,000Da
在由安捷伦(Agilent)1100型等度泵和注入器(德国Waldbronn)和沃特斯(Waters)214型差示折光计(马萨诸塞州米尔福德)组成的在40℃下操作的液相色谱仪上进行分离。使用3.1版本的
Figure BDA0001916508150000081
软件(英国彻奇斯特雷顿的聚合物实验室(PolymerLaboratories,Church Stretton,UK))进行系统控制、数据采集和数据处理。
使用由购自Shoko美国(加利福尼亚州托兰斯)的填充有高度交联的极性凝胶(标记为GF-310HQ、GF-510HQ和GF-710HQ的孔径,粒径9μm)的三个Asahipak柱(300x7.5mm ID)构成的SEC柱组,以1毫升/分钟的速率在100mM NH4OAc的MeOH溶液(来自飞世尔(Fisher)的最优级)中进行SEC分离。使100μL样品经受SEC分离。
通过用窄PEO标准物校准进行相对MW测量。
实例6(比较)
通过共沸蒸馏干燥聚乙二醇(4000g/mol,102.6g)的甲苯(287g)溶液。将溶液冷却至90℃后,加入乙二胺(0.193g),并将溶液搅拌5分钟。分别加入DESMODUR N3600(4.30g)和乙氧基化的甘油(1236g/mol,5.28g),并将反应混合物再搅拌5分钟。加入辛酸铋(0.26g),并将反应混合物搅拌1小时。将反应混合物冷却至室温,并通过旋转蒸发去除溶剂。分离出聚合物,为白色固体。0.8PEG4000/0.1乙二胺/0.3667N3600/0.2Gly-EO(26)
实例7(比较)
通过共沸蒸馏干燥聚乙二醇(4000g/mol,73.6g)的甲苯(220g)溶液。将溶液冷却至90℃后,分别加入DESMODUR N3600(2.74g)和乙氧基化的甘油(1236g/mol,3.36g),并将溶液搅拌5分钟。将辛酸铋(0.38g)加入溶液中,并将反应混合物搅拌1小时。将反应混合物冷却至室温,并通过旋转蒸发去除溶剂。分离出聚合物,为白色固体。0.9PEG4000/0.3667N3600/0.2Gly-EO(26)
Figure BDA0001916508150000101
OT(open time)是开放时间;以克力为单位的1天压粘性;以克力为单位的1天粘性;以下描述测试方法细节;OTE-500是商业开放时间添加剂(RHODOLINE OTE-500添加剂,索尔维集团(Solvay,Inc.)),其包含非离子型和阴离子型硫酸根乙氧基化的三苯乙烯基苯酚;添加剂%以乳胶漆的总重量计。
虽然OTE-500具有良好的开放时间,但其降低了抗压粘性、抗粘性、流平性和抗污性,而与OTE-500相比,本发明的聚合物具有良好的开放时间且对压粘性、粘性、流平性和污染具有较小或最小影响。令人惊讶地发现与对照相比,实例2的产物增加抗压粘性和抗粘性。
OT分钟
实例1 2 10
实例2 2 11
实例3 2 9.3
实例4 2 12
实例5 2 12.3
实例6 2 5.0
实例7 2 5.7
OTE-500 2 11
OT通常随着含量的提高而增加。然而,由于抗压粘性和抗粘性减弱,OTE-500常常甚至不能以1%的量使用,而PEU和PEUU可以更高水平使用,且因此与OTE-500相比可以实际上增加开放时间。
Figure BDA0001916508150000111
根据ASTM-D7488测量开放时间。通过首先将油漆制剂施涂到具有7密耳(0.18mm)刮刀的白色乙烯基衬底上来进行抗污性研究。使膜静置7天,并使用校准的平板扫描仪扫描衬底以获得基线测量值。然后将污染施加到干膜上并使其在经受去除测试之前静置2小时:将Leneta SC-1非研磨性介质与水(3:2体积/体积)组合以形成溶液。将溶液薄膜施涂到污染的涂层上;将非研磨性海绵浸入溶液中10秒,然后在约5kPa的压力下与污染的涂层接触,并以60循环/分钟(来回=1循环)的速率振荡100秒。用水冲洗擦洗过的衬底并用扫描仪对污染的衬底进行成像以确定基线与擦洗过的污染之间的实验室坐标的均方根差(ΔE76)。
使用Leneta流平测试刀片LTB-2的微型模拟物进行沉陷流平。在CTR条件下水平干燥沉陷。使用相对于模拟Leneta沉陷水平度标准物LS-2校准的定制软件对干膜进行成像和分析。
将涂覆的样品在22℃和50%RH下固化24小时。使用定制的自动化高通量摩擦计来测量粘性。使用1N的力将直径为3/8”(9.5mm)的304型不锈钢球放置在涂层的表面上。施加所述力达5秒,此后测量从表面去除球所需的力。
将涂覆的样品在22℃和50%RH下固化24小时。用Epilog Zing激光器将样品精确切割成0.5”×0.5”(12.7×12.7mm)。在施加8kPa压力的重量下,在50℃下放置两个涂覆的样品彼此接触30分钟。然后使用TA-XT Plus质构分析仪测量将其分离所需的力。
Figure BDA0001916508150000121
“流平(Lev.)”是流平(leveling);“CA-2500”是OROTAN CA-2500分散剂(苯乙烯、α-甲基苯乙烯和(甲基)丙烯酸的共聚物;陶氏化学公司的产品);“BSU”是SOPROPHOR BSU表面活性剂(三苯乙烯基苯酚乙氧基化物,约16摩尔EO,HLB=12.6);“对照”是完全没有开放时间添加剂的对照。

Claims (11)

1.一种组合物,其包含:(a)亲水性聚氨酯,其包含以下的聚合单元:(i)羟基官能度为2至4且重均分子量为800至16,000的水溶性多元醇,和(ii)异氰酸酯官能度为2至6的脂肪族聚异氰酸酯,其中聚合环氧乙烷单元占所述亲水性聚氨酯的至少85重量%;其中所述水溶性多元醇包括聚乙二醇和乙氧基化甘油,其中所述聚乙二醇包括在一端用C1-C4烷基封端的环氧乙烷聚合物或未封端的环氧乙烷聚合物,以及以下中的至少一种:(b)具有至少5个羟基且Mw为300至4,000的糖类;(c)Mw为700至50,000且具有10至55重量%的C3-C6羧酸单体的聚合残基的分散剂聚合物和(d)HLB>11且具有12个至100个环氧乙烷的聚合单元的表面活性剂;
其中聚合环氧乙烷单元重量百分比和聚环氧乙烷平均分子量的乘积为至少4,400且不大于12,000,其中所述聚环氧乙烷平均分子量是聚氨酯中聚环氧乙烷单元的分子量的重量平均(Mw)。
2.根据权利要求1所述的组合物,其中所述亲水性聚氨酯的Mw为10,000至2,000,000。
3.根据权利要求2所述的组合物,其中聚合环氧乙烷单元占所述亲水性聚氨酯的至少90重量%。
4.根据权利要求3所述的组合物,其中所述水溶性多元醇包含:(i)重均分子量为4,000至10,000的水溶性聚乙二醇,和(ii)重均分子量为800至1,600的乙氧基化的甘油。
5.根据权利要求4所述的组合物,其中所述水溶性多元醇包含:(i)重均分子量为6,000至10,000的水溶性聚乙二醇,和(ii)重均分子量为800至1,600的乙氧基化的甘油。
6.根据权利要求1-5中任一项所述的组合物,所述组合物包含糖类和以下之一:(i)分散剂聚合物和(ii)非离子表面活性剂。
7.一种包含0.1至5重量%组合物的乳胶漆,其包含:(a)亲水性聚氨酯,其包含以下的聚合单元:(i)羟基官能度为2至4且重均分子量为800至16,000的水溶性多元醇,和(ii)异氰酸酯官能度为2至6的脂肪族聚异氰酸酯,其中聚合环氧乙烷单元占所述亲水性聚氨酯的至少85重量%,其中所述水溶性多元醇包括聚乙二醇和乙氧基化甘油,其中所述聚乙二醇包括在一端用C1-C4烷基封端的环氧乙烷聚合物或未封端的环氧乙烷聚合物;以及以下中的至少一种:(b)具有至少5个羟基且Mw为300至4,000的糖类;(c)Mw为700至50,000且具有10至55重量%的C3-C6羧酸单体的聚合残基的分散剂聚合物和(d)HLB>11且具有12个至100个环氧乙烷的聚合单元的表面活性剂;
其中聚合环氧乙烷单元重量百分比和聚环氧乙烷平均分子量的乘积为至少4,400且不大于12,000,其中所述聚环氧乙烷平均分子量是聚氨酯中聚环氧乙烷单元的分子量的重量平均(Mw)。
8.根据权利要求7所述的乳胶漆,其中所述水溶性多元醇包含:(i)重均分子量为4,000至10,000的水溶性聚乙二醇,和(ii)重均分子量为800至1,600的乙氧基化的甘油。
9.根据权利要求7或8所述的乳胶漆,其中所述亲水性聚氨酯的Mw为10,000至2,000,000。
10.根据权利要求7或8所述的乳胶漆,其中聚合环氧乙烷单元占所述亲水性聚氨酯的至少90重量%。
11.根据权利要求7或8所述的乳胶漆,其包含麦芽糊精和以下之一:(i)所述分散剂聚合物和(ii)非离子型表面活性剂。
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