发明公开
EP2341084A1 Redispersible polymer powders stabilized with protective colloid compositions
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基本信息:
- 专利标题： Redispersible polymer powders stabilized with protective colloid compositions
- 专利标题（中）：Mit ut ver ver ver ver ver ver ver ver ver ver ver ver ver ver ver ver ver ver ver
- 申请号：EP10193622.7 申请日：2010-12-03
- 公开(公告)号：EP2341084A1 公开(公告)日：2011-07-06
- 发明人： Bergman, Roger , Kalantar, Thomas , Harris, Keith , Kim-Habermehl, Linda , Ladika, Mladen , Hong, Liang
- 申请人： DOW Chemical Company
- 申请人地址： 100 Independence Mall West Philadelphia, PA 19106 US
- 专利权人： DOW Chemical Company
- 当前专利权人： DOW GLOBAL TECHNOLOGIES LLC
- 当前专利权人地址： DOW GLOBAL TECHNOLOGIES LLC
- 代理机构： Buckley, Guy Julian
- 优先权： US335015P 20091230
- 主分类号： C08F2/22
- IPC分类号： C08F2/22 ; C08F2/20
摘要：
A water redispersible polymer powder is produced by drying an aqueous mixture of a water insoluble film-forming polymer and a colloidal stabilizer which includes a chelating agent and at least one water soluble polymer. The amount of chelating agent is at least 0.1% by weight, based upon the weight of the water insoluble film-forming polymer, and the amount of the at least one water soluble polymer is at least 0.1% by weight, based upon the weight of the water insoluble film-forming polymer. Dispersions or polymer compositions containing a chelating agent and water soluble polymer as a colloidal stabilizer exhibit an unexpectedly low viscosity which facilitates spray drying and permits use of high solids content dispersions with low pressure spray drying to increase production efficiency. The colloidal stabilizer composition provides unexpectedly superior redispersibility for water insoluble film-forming polymers having very low carboxylation levels.
摘要（中）：
通过干燥包含螯合剂和至少一种水溶性聚合物的水不溶性成膜聚合物和胶体稳定剂的水性混合物来制备水可再分散聚合物粉末。 基于水不溶性成膜聚合物的重量，螯合剂的量为至少0.1重量％，至少一种水溶性聚合物的量为至少0.1重量％，基于 水不溶性成膜聚合物。 含有螯合剂和水溶性聚合物作为胶体稳定剂的分散体或聚合物组合物表现出意想不到的低粘度，其有助于喷雾干燥，并允许在低压喷雾干燥下使用高固体含量的分散体以提高生产效率。 胶体稳定剂组合物为具有非常低的羧化水平的水不溶性成膜聚合物提供出人意料的优异的再分散性。