CN1081656C - 可再分散的分散粉末组合物,其制备方法及其用途 - Google Patents

可再分散的分散粉末组合物,其制备方法及其用途 Download PDF

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CN1081656C
CN1081656C CN95191407A CN95191407A CN1081656C CN 1081656 C CN1081656 C CN 1081656C CN 95191407 A CN95191407 A CN 95191407A CN 95191407 A CN95191407 A CN 95191407A CN 1081656 C CN1081656 C CN 1081656C
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silane
multipolymer
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赫伯特·埃克
克劳斯·阿德勒
亨里希·霍普夫
福兰茨·约德尔保尔
迪德尔·格尔哈丁格
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Abstract

本发明涉及一种可再分散于水中并以水不溶性有机聚合物为基础的分散粉末组合物，其中，上述的粉末组合物包含：0.1-30%(重量)(以有机聚合物总重为计)之一种或多种水可分散的有机硅化合物，其沸点在常压下为大于160℃，且选自由硅烷，聚硅烷，低聚硅氧烷，碳硅烷，聚碳硅烷，碳硅氧烷，聚碳硅氧烷和聚亚甲硅基二硅氧烷组成的组。本发明还涉及上述组合物的制备方法及其用途。

Description

可再分散的分散粉末组合物，其制备方法及其用途
本发明涉及分散粉末组合物，该粉末可再分散于水中，并以水不溶性聚合物为基础，本发明还涉及该粉末的制备方法和用途。
可再分散于水中且以均聚物或共聚物为基础的分散粉末组合物已为人知。这样的分散粉末组合物是通过在热气流中将相应的含水塑料分散系喷雾干燥来制备的。分散粉末适合作为建筑材料工业中的水硬粘合剂，这种产品进一步可用作涂敷组合物或胶粘剂中的粘合剂。
EP-A 228657(US-A 4704416)公开了一种可再分散于水中并以水溶性聚合物为基础的分散粉末，该粉末包含有机硅化合物，特别是有机聚硅氧烷。该分散粉末是通过喷雾干燥有机硅化合物在水溶性聚合物之水溶液中的乳液而制得的。
EP-B 279373涉及一种可再分散于水中的粉末，该粉末包含有机聚硅氧烷，并另外含有水溶性的成膜聚合物。它们是通过喷雾干燥上述组成之含水混合物来制备的。
EP-A 493168涉及一种可再分散于水中的粉末，该粉末是以成膜的，水不溶性乙烯或丙烯酸聚合物为基础的，而且含有硅氧烷，更确切地说是有机硅氧烷酯(organosiliconates)和/或有机聚硅氧烷。它们是通过喷雾干燥乙烯或丙烯酸聚合物之水分散液来制备的，在该分散液中于喷雾之前添加有硅氧烷。
本发明的目的是提供分散粉末组合物，该组合物可再分散于水中，并以水不溶性有机聚合物为基础，而且该组合物可用有机硅化合物改性。
本发明涉及一种可再分散于水中的分散粉末组合物，该组合物以水不溶性聚合物为基础，其中，上述的组合物包含：0.1-30％(重量)(以有机聚合物含量为计)之一种或多种有机硅化合物，所述有机硅化合物可分散于水中，其沸点在常压下为大于160℃，且选自由硅烷，聚硅烷，低聚硅氧烷，碳硅烷，聚碳硅烷，碳硅氧烷，聚碳硅氧烷和聚亚甲硅基二硅氧烷组成的组。
合适的水不溶性有机聚合物是：以水分散体形式存在的均聚-和共聚物，或是能转化成水分散体的均聚-和共聚物，而且，如果合适的话，在升高的温度和/或在碱性介质中，所述的均聚-和共聚物在干燥后形成固体膜并，如果合适的话，硬化。分散粉末颗粒的平均粒径一般为1-1000μm，优选10-700μm，特别优选50-500μm。
优选的水不溶性聚合物是：
含有一个或多个单体单元的乙烯酯均聚或共聚物，所述单体单元选自具有1-15个碳原子的非支链或支链烷基羧酸乙烯酯；
含有一个或多个单体单元的(甲基)丙烯酸酯均聚或共聚物，所述单体单元选自具有1-12个碳原子的非支链或支链醇之甲基丙烯酸酯和丙烯酸酯；
具有1-12个碳原子的非支链或支链醇之富马酸和/或马来酸单酯或二酯的均聚或共聚物；
二烯如丁二烯或异戊二烯的均聚或共聚物，和烯烃如乙烯或丙烯的均聚或共聚物，以及可与二烯共聚的如苯乙烯，(甲基)丙烯酸酯或富马酸或马来酸酯的均聚或共聚物；
乙烯基芳族如苯乙烯，甲基苯乙烯或乙烯基甲苯的均聚或共聚物；
卤代乙烯基化合物如氯乙烯的均聚或共聚物。
也可用合适的水不溶性，成膜的加聚和缩聚聚合物，如：聚氨基甲酸乙酯，聚酯，聚醚(包括聚乙烯氧化物)，聚酰胺，蜜胺-甲醛树脂或酚醛树脂，如果合适的话，也可以是它们的低聚前体的形式。
优选的乙烯基酯是：乙酸乙烯酯，丙酸乙烯酯，丁酸乙烯酯，2-乙基己酸乙烯酯，月桂酸乙烯酯，乙酸1-甲基乙烯酯，新戊酸乙烯酯和最多具有10个碳原子的α-链单羧酸乙烯酯，例如VeoVa9R或VeoVa10a。特别优选乙酸乙烯酯。
优选的甲基丙烯酸酯或丙烯酸酯是：丙烯酸甲酯，甲基丙烯酸甲酯，丙烯酸乙酯，甲基丙烯酸乙酯，丙烯酸丙酯，甲基丙烯酸丙酯，丙烯酸正丁酯，丙烯酸叔丁酯，甲基丙烯酸正丁酯，甲基丙烯酸叔丁酯，丙烯酸2-乙基己酯。特别优选丙烯酸甲酯，甲基丙烯酸甲酯，丙烯酸正丁酯和丙烯酸2-乙基己酯。
优选的富马酸和马来酸之酯基为：甲基，乙基，正丙基，异丙基，正丁基，异丁基，叔丁基，己基，乙基己基和十二烷基。
如果合适，以共聚单体相的总重为计，乙烯酯共聚物可包含1.0-65％(重量)的α-烯烃，如乙烯或丙烯，和/或乙烯基芳族，如苯乙烯，和/或乙烯基卤化物，如氯乙烯，和/或1-10个碳原子的醇之丙烯酸酯或甲基丙烯酸酯，如丙烯酸甲酯，甲基丙烯酸甲酯，丙烯酸乙酯，甲基丙烯酸乙酯，丙烯酸丙酯，甲基丙烯酸丙酯，丙烯酸正丁酯，丙烯酸叔丁酯，甲基丙烯酸正丁酯，甲基丙烯酸叔丁酯和丙烯酸2-乙基己酯和/或乙烯化不饱和二羧酸酯或其衍生物，如富马酸二异丙酯，马来酸或富马酸之二甲酯，甲基叔丁酯，二正丁酯，二叔丁酯和二乙酯，或马来酸酐。
如果合适，以共聚单体相的总重为计，(甲基)丙烯酸酯共聚物可包含1.0-65％(重量)的α-烯烃，如乙烯或丙烯，和/或乙烯基芳族，如苯乙烯，和/或乙烯基卤化物，如氯乙烯，和/或乙烯化不饱和二羧酸酯或其衍生物，如富马酸二异丙酯，马来酸或富马酸之二甲酯，甲基叔丁酯，二丁酯和二乙酯，或马来酸酐。
在一优选实施方案中，以共聚单体混合物的总重为计，乙烯酯共聚物和(甲基)丙烯酸酯共聚物还含有0.05-10.0％(重量)的辅助单体，这些单体选自：乙烯化不饱和羧酸，优选丙烯酸或甲基丙烯酸；乙烯化不饱和羧酸酰胺，优选丙烯酰胺；乙烯化不饱和磺酸及其盐，优选乙烯基磺酸；和/或聚乙烯化不饱和共聚单体，例如己二酸二乙烯酯，马来酸二烯丙酯，甲基丙烯酸烯丙酯或氰尿酸三烯丙酯。合适的辅助单体也可是具有交联作用的共聚单体，如丙烯酰胺羟基乙醇酸(acrylamidoglycolic acid AGA)，甲基丙烯酰胺羟基乙醇酸甲酯(MAGME)，N-羟甲基丙烯酰胺(NMAA)，N-羟甲基甲基丙烯酰胺，N-羟甲基氨基甲酸烯丙酯和烷基醚，如异丁氧基醚，或N-羟甲基丙烯酰胺，N-羟甲基甲基丙烯酰胺或N-羟甲基氨基甲酸烯丙酯之酯。
(甲基)丙烯酸酯共聚物的相应说明也适用于马来酸或富马酸的酯之共聚物。
可通过自由基聚合的上述之水不溶性聚合物优选以乳液聚合法制备。聚合反应可非连续地或连续地进行，其中，可使用或不使用籽胶乳(seed latices)，可首先引入反应混合物中的所有组分或所有的单个组分，或首先引入反应混合物中的一部分，然后计量加入反应混合物中的组分或单个组分，或通过没有初始混合物的计量加入方法。所有的计量都优选以特殊组分的消耗速率来进行。聚合反应优选在0-100℃的温度范围内进行，并用乳液聚合法所常用的方法来引发。所述的引发是借助常规的可形成自由基的水溶性试剂而得以实施的，该试剂的用量，以单体之总重为计，优选为0.01-3.0％(重量)。所有的通常用于乳液聚合法中的乳化剂和/或保护性胶体都可用作分散剂。
如果合适，以单体之总重为计，乳化剂的用量为最多至6％。在此，可能的乳化剂是阴离子型和阳离子型以及非离子型的乳化剂，如果这些乳化剂是不溶于保护性胶体中的。优选使用保护性胶体，而以单体的总重为计，其用量特别优选为最多至15％(重量)。所述胶体的例子有，聚乙烯醇及其衍生物；如乙烯醇/乙酸乙烯酯共聚物，聚乙烯吡咯烷酮；水溶型的聚糖类，如淀粉(直链淀粉和支链淀粉)，纤维素，瓜耳胶，黄蓍酸，葡聚糖，藻酸盐以及上述物质的羧甲基，甲基，羟乙基和羟丙基的衍生物；蛋白质，如酪蛋白，大豆蛋白和明胶；合成聚合物，如聚(甲基)丙烯酸，聚(甲基)丙烯酰胺，聚乙烯磺酸和它们的水溶性共聚物；以及蜜胺甲醛磺酸盐，萘甲醛磺酸盐，和苯乙烯/马来酸和乙烯基醚/马来酸共聚物。在一特别优选的实施方案中，聚合反应是在有保护性胶体而无乳化剂的情况下进行的。
合适的可分散于水中的，沸点大于160℃(常压)的硅化合物选自：硅烷，聚硅烷，低聚硅氧烷，碳硅烷，聚碳硅烷，碳硅氧烷，聚碳硅氧烷和聚亚甲硅基二硅氧烷。优选使用的化合物是：硅烷，如四有机硅烷SiR4；硅酸酯Si(OR′)4；有机有机氧硅烷SiRn(OR′)4-n，其中n＝1-3；通式为R3Si(SiR2)nSiR3的聚硅烷，其中n＝0-500，优选0-8；通式为R3SiO(SiR2O)nSiR3低聚硅氧烷，其中n＝0-4，R′代表相同或不同的具有1-4个碳原子的烷基或烷氧基亚烷基，优选为甲基或乙基；R可以是相同或不同的，并为具有1-22个碳原子的支链或非支链烷基，具有3-10个碳原子的环烷基，具有2-4个碳原子的亚烷基，具有6-18个碳原子的芳基，芳烷基或烷芳基，其中，上述R基也可以为卤素如F或Cl，醚，硫醚，酯，酰胺，腈，羟基，氨，羧基，磺酸，羧酸酐和羰基所取代，如果是聚硅烷和低聚硅氧烷的话，R也可以是OR’。
特别优选的有机硅化合物是，如：
四乙氧基硅烷，甲基三丙氧基硅烷，甲基三(乙氧基乙氧基)硅烷，乙烯基三(甲氧基乙氧基)硅烷，(甲基)丙烯酰氧基丙基三乙氧基-或-三甲氧基硅烷，γ-氯丙基三乙氧基硅烷，β-次氮基乙基三乙氧基硅烷，巯基丙基三乙氧基-和-三甲氧基硅烷，苯基三乙氧基硅烷，异辛基三乙氧基硅烷，二丙基二乙氧基硅烷，甲基苯基二乙氧基硅烷，二苯基二甲氧基硅烷，甲基乙烯基三(乙氧基乙氧基)硅烷和其二-和/或三硅氧烷。还进一步包括：六甲基二乙氧基三硅氧烷，八甲基环四硅氧烷，四甲基二乙氧基二硅烷，三甲基三甲氧基二硅烷，二甲基四甲氧基二硅烷，或它们的缩合产物，和五甲基二硅烷-二硅氧烷。上述的硅化合物可以单独使用也可作为混合物使用。
有机硅化合物的制备可按下述文献中所描述的方法进行，No11，Chemieund Technologie der Silicone [Chemistry and technology of thesilicones]，2nd edition 1968，Weinheim and in Houben-Weyl，Methodender organischen Chemie[Methods of organic chemistry]，Volume E20，P1782 et seq.，2219 et seq.，Georg Thieme Verlag，Stuttgart，1987。
以有机聚合物含量为计，水分散性有机硅化合物的量优选为0.5-15％(重量)。
硅化合物优选以乳液形式加入到待喷雾的有机聚合物分散体之中。如果合适的话，下述的保护性胶体优选与合适的乳化剂合用以用于乳化。阴离子型和阳离子型以及非离子型乳化剂都可作为乳化剂。优选那些不溶于保护性胶体、且其分子量与胶体相比低于2000的乳化剂。合适的乳化剂对于本领域的技术人员来说是熟悉的，例如可以在下列文献中查找到：Houben-Weyl， Methoden derorganischen Chemie[Methods of organic chemistry]，Volume XIV，1，Makromolekulare Stoffe[Macromolecular substances]，Georg ThiemeVerlag，Stuttgart，1961，192-208。以硅化合物为计，乳化剂的使用量通常最多至5％(重量)。以有机聚合物为计，其量优选小于1％(重量)。
在一优选实施方案中，以水不溶性有机聚合物和硅化合物的总重为计，分散粉末组合物优选含有8-15％(重量)的保护性胶体。合适的保护性胶体是，例如，聚乙烯醇及其衍生物；水溶型的聚糖类，如淀粉(直链淀粉和支链淀粉)，纤维素，瓜耳胶，黄蓍酸，葡聚糖，藻酸盐以及上述物质的羧甲基，甲基，羟乙基和羟丙基的衍生物；蛋白质，如酪蛋白，大豆蛋白和明胶；合成聚合物，如聚(甲基)丙烯酸，聚(甲基)丙烯酰胺，聚乙烯磺酸和它们的水溶性共聚物；蜜胺甲醛磺酸盐，萘甲醛磺酸盐，和苯乙烯/马来酸和乙烯基醚/马来酸的共聚物。
优选实施方案中所包含的分散粉末组合物之其他组分是防粘剂，如碳酸钙或碳酸镁，滑石粉，石膏，硅酸和硅酸盐，它们的粒径优选在10nm-10μm范围之内。
分散粉末组合物是通过喷雾干燥来制备的。所述的干燥可在常规的喷雾干燥装置中进行，而雾化可通过单，双或多组喷嘴或以旋转盘得以实施。根据所用装置，树脂的Tg和所需的干燥程度，出料温度一般选择在55-100℃之间，优选70-90℃。
如果合适的话，可在添加其他辅剂后，将优选具有20-60％之固体含量的聚合物分散体，和乳液或，如果合适的话，优选具有20-50％之固体含量的硅化合物的分散体之混合物在喷雾干燥中可一并进行喷雾与干燥。在此可得到包含在水溶性保护胶体基质之中的水不溶性有机聚合物颗粒和硅化合物颗粒的颗粒。
上述方法还可变化为，如果合适的话，在添加其他辅剂后，将水性聚合物分散体和水性乳液或，如果合适的话，硅化合物的分散体，分别由不同的喷嘴喷雾，然后再一并于喷雾塔中进行干燥。在该方法中，有机聚合物颗粒与硅化合物颗粒通常是以单独之颗粒的形式存在。
分散粉末组合物可用于通常的应用领域。例如，在与无机水硬凝固粘结剂如水泥(Portland，铝酸盐，粗面凝灰岩，Hullen，氧化镁或磷酸盐水泥)，石膏或水玻璃合用的化学建筑产品方面，用于制备建筑粘结剂，灰浆，填料组合物，地板填料组合物，接缝灰浆和颜料。另外还可作为涂敷组合物和粘结剂用的底板粘合剂或者是用于织物的粘合剂。分散粉末组合物优选用作疏水性粘结剂，其中，除具有良好的粘结性外，还可使水的吸收减少，也就是说可得到所期望的斥水作用。
实施例：分散粉末组合物的制备
实施例1-4以及对比例中的雾化是在Nubilosa喷雾干燥器中进行的：进入温度：                      100-130℃出料温度：                      65-90℃二组件喷嘴前的压缩空气压力：    4bar分散体之固体含量：              约33％
实施例1：
制备乙酸乙烯酯/乙烯共聚物(LL 485，Wacker-Chemie GmbH，固体含量约50％)，异辛基三乙氧基硅烷(含量约35％)水乳液之保护性胶体(聚乙烯醇W 25/140，Wacker-chemie GmbH)的混合物，其中，硅烷含量若以共聚物的量为计是2.5％(重量)，而若以共聚物和硅烷之总量为计是8.5％(重量)。该混合物用上述的操作数据进行干燥。以可聚合之组分的总重为计，在由此得到的粉末中添加10％(重量)的市售防粘剂(Ca/MgCO3和氢化硅酸镁的混合物)。
实施例2：
方法与实施例1类似，不同之处在于，混合物含有4.1％(重量)的异辛基三乙氧基硅烷。由此得到的粉末非常容易地自由流动并可再分散。
实施例3：
以与实施例1类似的方法制备苯乙烯/丙烯酸丁酯共聚物(LL 476，Wacker-Chemie GmbH)，异辛基三乙氧基硅烷水乳液之保护性胶体(聚乙烯醇W25/140，Wacker-Chemie GmbH)的混合物，其中，硅烷含量若以共聚物的量为计是2.1％(重量)，而若以共聚物和硅烷之总量为计是8.3％(重量)。该混合物用上述的操作数据进行干燥。以可聚合之组分的总重为计，在由此单独得到的粉末中添加10％(重量)的市售防粘剂(Ca/MgCO3和氢化硅酸镁的混合物)。
实施例4：
重复实施例3，不同之处在于，混合物含有4.2％(重量)的异辛基三乙氧基硅烷。由此得到的粉末非常容易地自由流动并可再分散。对比例1：
其方法与实施例1类似，不同之处在于，在混合物中未添加硅烷。使用测试：
将在实施例1-4和对比例1中制备的产品用于下列的接缝填料和完全绝热之组合物中：
接缝填料组合物：300.0份 Portland水泥PZ 35 F40.0份 铝酸盐水泥(HAC-Fondu Lafarge)649.5份 石英砂(0.1-0.4mm)0.5份 Culminal C 855610.0份 分散粉末水200ml每1000g干混合物
完全绝热组合物(建筑粘结剂)：280.0份 Dykerhoff白水泥500.0份 石英砂(0.1-0.4mm)190.0份 Jura beads MHS1.5份 Tylose BA 274120.0份 分散粉末20.0份 水测试接缝填料组合物：
根据DIN 1164对由上述组合物制备的水泥组合物之挠曲抗张强度和压缩强度进行测试。
根据DIN 52617，测定其吸水系数。
样品在标准气候(23℃/50％相对大气湿度)下储存14天。
定性地估测加工性能。
测试结果见表1。测试建筑粘结剂组合物：
在干态下储存14天后，以250N/s的剥离速率测定粘结强度。
对于水滴测试来说，用吸液管将0.5ml的水滴在涂布于Styropor上的粘结剂组合物上，然后测定水滴被吸收所用的时间。
所得结果见表2。
由表1和表2的结果可知，根据本发明之分散粉末组合物具有疏水作用，而对机械性能却没有任何负面的改变。与疏水性试剂如硬脂酸酯或油酸酯相反，这些试剂是随后添加至粉末组合物中的，以水将干灰浆的润湿不会延迟，却可立即进行。表1：(接缝填料组合物的测试)实施例        1         2         3         4         对比例1吸水性        0.25      0.20      0.32      0.13      0.76(kg/m2×h0.5)挠曲抗张强度  4.6±0.4  4.5±0.2  5.7±0.2  5.1±0.4  4.9±0.3(N/mm2)压缩强度      16.9±0.4 16.0±0.3 18.0±0.4 18.3±0.5 17.4±0.5(N/mm2)加工性        有些粘    有些粘    非常好    非常好    有些粘表2：(在聚苯乙烯片材上的粘结剂组合物的测试)实施例      1             2              4            对比例1粘结强度    0.1           0.11          0.1           0.11(N/mm2)    100％Styropor 100％Styropor 100％Styropor 75％Styropor
        被撕开        被撕开        被撕开        被撕开水滴测试    135分钟       360分钟       360分钟       5分钟

Claims (7)

1，一种可再分散于水中并以水不溶性成膜有机聚合物为基础的分散粉末组合物，其中，上述的粉末组合物包含：0.1-30％(重量)(以有机聚合物总重为计)之一种或多种水可分散的有机硅化合物，其沸点在常压下为大于160℃，且选自由下列物质组成的组：四有机硅烷SiR4；硅酸酯Si(OR’)4；有机氧硅烷SiRn(OR’)4-n，其中n＝1-3；通式为R3Si(SiR2)nSiR3的聚硅烷，其中n＝0-500；通式为R3SiO(SiR2O)nSiR3的低聚硅氧烷，其中n＝0-4，R’代表相同或不同的具有1-4个碳原子的烷基或烷氧基亚烷基；R可以是相同或不同的，并为具有1-22个碳原子的支链或非支链烷基，具有3-10个碳原子的环烷基，具有6-18个碳原子的芳基，芳烷基或烷芳基，其中，上述R基也可以为选自于F或Cl的卤素，醚，硫醚，酯，酰胺，腈，羟基，氨，羧基，磺酸，羧酸酐和羰基所取代，当为聚硅烷和低聚硅氧烷时，R也可以是OR’，而且也可是，碳硅烷，聚碳硅烷，碳硅氧烷，聚碳硅氧烷和聚亚甲硅基二硅氧烷。
2，根据权利要求1的分散粉末组合物，其包含以下的一种或多种单体作为水不溶性成膜有机聚合物：
含有一个或多个单体单元的乙烯酯均聚或共聚物，所述单体单元选自具有1-15个碳原子的非支链或支链烷基羧酸乙烯酯；
含有一个或多个单体单元的(甲基)丙烯酸酯均聚或共聚物，所述单体单元选自具有1-10个碳原子的醇之甲基丙烯酸酯和丙烯酸酯；
具有1-12个碳原子的非支链或支链醇之富马酸和/或马来酸酯的均聚或共聚物；
选自于丁二烯或异戊二烯的二烯的均聚或共聚物，和选自于乙烯或丙烯的烯烃的均聚或共聚物，以及可与二烯共聚的苯乙烯，(甲基)丙烯酸酯或富马酸或马来酸酯的均聚或共聚物；
选自于苯乙烯，甲基苯乙烯或乙烯基甲苯的乙烯基芳族的均聚或共聚物；
氯乙烯的均聚或共聚物。
3，根据权利要求1或2的分散粉末组合物，其包含以下的一种或多种硅化合物：四乙氧基硅烷，甲基三丙氧基硅烷，甲基三(乙氧基乙氧基)硅烷，乙烯基三(甲氧基乙氧基)硅烷，(甲基)丙烯酰氧基丙基三乙氧基-或-三甲氧基硅烷，γ-氯丙基三乙氧基硅烷，β-次氮基乙基三乙氧基硅烷，巯基丙基三乙氧基-或-三甲氧基硅烷，苯基三乙氧基硅烷，异辛基三乙氧基硅烷，二丙基二乙氧基硅烷，甲基苯基二乙氧基硅烷，二苯基二甲氧基硅烷，甲基乙烯基三(乙氧基乙氧基)硅烷和其二-和/或三硅氧烷，和六甲基二乙氧基三硅氧烷，八甲基环四硅氧烷，四甲基二乙氧基二硅烷，三甲基三甲氧基二硅烷，二甲基四甲氧基二硅烷，或它们的缩合产物，和五甲基二硅烷-二硅氧烷。
4，通过喷雾制备权利要求1所述的分散粉末组合物的方法，其中，将有机聚合物分散体和硅化合物的乳液或分散体之混合物，如果合适的话，在添加其他辅剂后，在喷雾干燥中可一并进行喷雾与干燥。
5，通过喷雾制备权利要求1所述的分散粉末组合物的方法，其中，在喷雾干燥中，将有机聚合物分散体和硅化合物的乳液或分散体，如果合适的话，在添加其他辅剂后，分别由不同的喷嘴喷雾，然后再一并于喷雾塔中进行干燥。
6，如权利要求1的分散粉末组合物在与选自于水泥，石膏或水玻璃的无机水硬凝固粘结剂合用的化学建筑产品方面上作为粘结剂，在制备建筑粘结剂，灰浆，填料组合物，地板填料组合物，接缝灰浆和颜料方面应用。
7，如权利要求1的分散粉末组合物作为涂敷组合物和粘结剂用的底板粘合剂或者是用于织物的粘合剂方面的应用。
CN95191407A 1994-01-27 1995-01-26 可再分散的分散粉末组合物,其制备方法及其用途 Expired - Lifetime CN1081656C (zh)

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ATE160372T1 (de) 1997-12-15

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