公开(公告)号：US3839258A

公开(公告)日：1974-10-01

申请号：US23261372

申请日：1972-03-07

Applicant: STAMICARBON

Inventor： VISSEREN M ,  GRAFF R

IPC: C08C1/12 ,  C08J3/07 ,  C08D5/02 ,  C09D7/00

CPC classification number: C08J3/07

Abstract: An improvement in the process of preparing a latex of an organic polymer from an organic solvent solution of this polymer involving the steps of emulsifying the polymer solution with water, evaporating the organic solvent in the emulsion so as to substantially foam the emulsion components, liquifying the organic solvent vapor causing the foam to sag and the formation of an organic solvent phase and an aqueous phase containing the polymer, and finally separating and recovering the polymer containing aqueous phase from the organic phase, the improvement being introducing the polymer in an organic solvent having a water solubility of less than 0.5 cc per liter, measured at 20*C and carrying out the solvent evaporation step in the presence of at least one organic oxygen compound containing more than one carbon atom.

Abstract translation: 从该聚合物的有机溶剂溶液中制备有机聚合物胶乳的方法的改进涉及以下步骤：用水乳化聚合物溶液，蒸发乳液中的有机溶剂以使乳液组分基本上发泡，将 有机溶剂蒸汽导致泡沫下垂，形成有机溶剂相和含有聚合物的水相，最后从有机相中分离和回收含有水相的聚合物，改进之处是将聚合物引入有机溶剂中，所述有机溶剂具有 水溶解度小于0.5cc /升，在20℃下测量，并在至少一种含有多于一个碳原子的有机氧化合物的存在下进行溶剂蒸发步骤。