CN104053706A - 分散水溶性聚合物的非水性方法 - Google Patents

分散水溶性聚合物的非水性方法 Download PDF

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CN104053706A
CN104053706A CN201280062530.8A CN201280062530A CN104053706A CN 104053706 A CN104053706 A CN 104053706A CN 201280062530 A CN201280062530 A CN 201280062530A CN 104053706 A CN104053706 A CN 104053706A
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A·奥柏林
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Abstract

本发明描述的是分散及水合水溶性聚合物的方法，所述方法包括形成聚丙二醇、水溶性聚合物及疏水改性的乙氧基化聚氨酯的非水性浆料，条件是该浆料含有少于5％的水；并且然后将该非水性浆料与水接触以分散及水合所述水溶性聚合物。

Description

分散水溶性聚合物的非水性方法
技术领域
本发明涉及用于分散水溶性聚合物的方法和组合物。
背景技术
许多水溶性聚合物(纤维素、纤维素衍生物、胶等)通常以固体、干燥形式出售，因此粉体处理和加工性能是极其重要的。例如，低含尘量是所期望的。同时，干燥粉末被从容器或接受器中倾倒的能力被描述为流动性。流动性受颗粒形状和尺寸分布、以及产生的堆积密度的影响。堆积密度为每单位体积的粉状固体材料所占据的质量。可接受的流动性通常取决于相对高的堆积密度及相对低的静止角。该静止角为粉末的圆锥状卸料堆的斜面与其被放置的表面之间的最大角度，较低的角度代表铺展更宽的堆。
作为将该水溶性聚合物用于其各种应用中的一部分，该水溶性聚合物必须被溶解。溶解通常被描述为具有两个重叠现象(分散及水合)的过程。分散是指将聚合物链团或颗粒在整个溶液中予以铺展。水合是指将该聚合物链松散化并使其流体力学体积膨胀(并且相应地，粘度增大)。若分散不良，或是如果水合速度超过分散，经水合的聚合物可溶胀且使相对干燥的、非水合的聚合物从溶液中分离出而形成团块。通常，期望的分散及水合的特征分别在于少量至没有团块形成以及粘度随时间快速增加。
因此，工业中需要减少上述问题(粉尘、变流、分散不一致、或不期望的水合速率)以简化包含水溶性聚合物的产品的配制。
发明详述
在一个实施方式中，本发明提供一种分散及水合水溶性聚合物的方法，所述方法包含形成聚丙二醇、水溶性聚合物及疏水改性的乙氧基化聚氨酯的非水性浆料，条件是该浆料含有少于5％的水；然后将该非水性浆料与水接触以分散及水合该水溶性聚合物。
术语“聚丙二醇”指具有至少三个丙二醇单元的含氧溶剂或多元醇。设想所述聚丙二醇也可在其组成中包括甲基醚及/或丙基醚单元，和/或是环氧乙烷和环氧丙烷的聚二醇共聚物。所述聚丙二醇的分子量(MW)是148g/mol至5000g/mol，优选206g/mol至400g/mol。在一个实施方式中，该聚丙二醇为POLYGLYCOLP-400E(CAS#：25322-694)或购自陶氏化学公司的DOWANOL TPM(二缩三丙二醇甲基醚，CAS#：25498-49-1)。
在一个实施方式中，该水溶性聚合物是至少一种水溶的、天然和合成的成膜型聚合物，其包括烷基纤维素醚、羟烷基纤维素醚和羟烷基烷基纤维素醚(包括甲基纤维素)；羟丙基甲基纤维素(HPMC)；羟乙基甲基纤维素(HEMC)；羟乙基纤维素(HEC)；羟丙基羟乙基纤维素(HPHEC)及羟丙基纤维素(HPC)，环氧乙烷的水溶性高分子量聚合物(优选为约20000分子量或更高)；天然产品例如瓜尔胶、黄原胶及水溶性增稠剂。优选地，所述水溶性聚合物为水溶性改性纤维素醚，选自烷基纤维素衍生物、羟烷基纤维素衍生物、阳离子羟烷基纤维素衍生物(该阳离子物质是季烷基胺)及羧烷基纤维素衍生物。在一个实施方式中，该水溶性改性纤维素醚并非水合阻滞(表面处理)级别的。优选的水溶性聚合物为羟乙基纤维素(可以以商标CELLOSIZE购自陶氏化学公司)、阳离子改性羟乙基纤维素(cat-HEC)、羟丙基甲基纤维素(可以以商标METHOCEL购自陶氏化学公司)及聚环氧乙烷(可以以商标POLYOX购自陶氏化学公司)。
疏水改性的乙氧基化聚氨酯(HEUR)具有20000到80000g/mol的MW。在一个实施方式中，该疏水改性的乙氧基化聚氨酯为购自陶氏化学公司的ACUSOLTM880。
在一个实施方式中，非水性浆料具有少于4％，优选少于3％，且更优选少于2％的水。
在一个实施方式中，本发明提供基本上由聚丙二醇、水溶性聚合物及疏水改性的乙氧基化聚氨酯构成的非水性浆料，条件是该浆料含有少于5％的水。在一个实施方式中，该非水性浆料不含磷酸盐。在一个实施方式中，该非水性浆料不含油。在一个实施方式中，该非水性浆料不含有表面活性剂。
本发明加速了水溶性聚合物在水中的溶解，因此相应地可用于个人护理及织物护理应用中，其中水溶性聚合物被水合且被包含进入个人护理及织物护理制剂中。在一个实施方式中，配制时间因更快的溶解而缩短。
实施例
实施例1
本发明的非水性浆料以重量百分比描述于表1中：
表1
*-经表面处理的
在室温下，在200mL塑料烧杯中在500rpm下搅拌聚丙二醇(购自德国Heidolph的HeidolphRZR2020搅拌器及购自德国KAWerke的四方叶片推进器)。然后，在500rpm的搅拌下加入疏水改性的乙氧基化聚氨酯并搅拌直至完全溶解，形成乳白色混合物。仍然在500rpm搅拌下，缓慢加入该水溶性聚合物，且在500rpm下持续该搅拌10-15分钟以形成非水性浆料。
实施例2
批料1-6基本上根据实施例1制造并测试。经观察，这6个制剂储存在室温、4℃、或40℃下一周后并未表现出相分离。
选择批料3用以进一步表征，使用Brookfield DV III Ultra可程式化流变仪，使用#64转子测定粘度，如表2所示：
表2
四周后，批料3仍无相分离且粘度表明该浆料是稳定的。
实施例3
批料1-5基本上根据实施例1而制造，并相对于相应的未处理的水溶性聚合物测试溶解，其全部处于2％浓度。结果示于表3。
表3
所列出的各10g的本发明浆料(有效地含有2g水溶性聚合物)被置于90g去离子水中并使用购自德国Heidolph的Heidolph RZR2020顶置式搅拌器以500rpm搅拌2min(在加入聚合物后)。
2g所列出的常规纤维素醚被置于98g去离子水中并使用购自德国Heidolph的Heidolph RZR2020顶置式搅拌器以500rpm觉拌2min(在加入聚合物后)。
每个溶液由训练过的评判员评价本领域技术人员知晓的溶解问题的证据(鱼眼、凝胶形成、不透明)。结论为本发明提供了更快且更容易的溶解。

Claims (8)

1.一种分散及水合水溶性聚合物的方法，所述方法包括：
形成聚丙二醇、水溶性聚合物及疏水改性的乙氧基化聚氨酯的非水性浆料，条件是所述浆料含有少于5％的水；以及然后
将所述非水性浆料与水接触以分散及水合所述水溶性聚合物。
2.根据权利要求1所述的方法，其中所述水溶性聚合物是水溶性改性的纤维素醚，其选自烷基纤维素衍生物、羟烷基纤维素衍生物、阳离子羟烷基纤维素衍生物(所述阳离子物质为季烷基胺)以及羧烷基纤维素衍生物。
3.根据权利要求1所述的方法，其中所述水溶性聚合物选自羟乙基纤维素、阳离子改性的羟乙基纤维素、羟丙基甲基纤维素以及聚环氧乙烷。
4.根据权利要求1所述的方法，其中所述方法在不需额外加热的情况下进行。
5.根据权利要求1所述的方法，其中所述聚丙二醇是二缩三丙二醇甲基醚。
6.一种非水性浆料，所述浆料基本上由下列构成：
聚丙二醇，
水溶性聚合物，以及
疏水改性的乙氧基化聚氨酯，
条件是所述浆料包含少于5％的水。
7.一种根据权利要求1所述的方法形成的个人护理组合物，所述个人护理组合物包含水溶性聚合物。
8.一种根据权利要求1所述的方法形成的织物护理组合物，所述织物护理组合物包含水溶性聚合物。
CN201280062530.8A 2011-12-22 2012-12-11 分散水溶性聚合物的非水性方法 Active CN104053706B (zh)

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