发明授权
US3733294A Manufacture of solutions and dispersions of polymers in organic liquids from a polymer latex 失效
聚合物在聚合物有机物中的溶液和分散体的制备

  • 专利标题: Manufacture of solutions and dispersions of polymers in organic liquids from a polymer latex
  • 专利标题(中): 聚合物在聚合物有机物中的溶液和分散体的制备
  • 申请号: US3733294D
    申请日: 1970-11-25
  • 公开(公告)号: US3733294A
    公开(公告)日: 1973-05-15
  • 发明人: KEOWN R
  • 申请人: DU PONT
  • 专利权人: Du Pont
  • 当前专利权人: Du Pont
  • 优先权: US9295070 1970-11-25
  • 主分类号: C08J3/02
  • IPC分类号: C08J3/02 C08F45/28 C08F47/20
Manufacture of solutions and dispersions of polymers in organic liquids from a polymer latex
摘要:
SOLUTIONS AND DISPERSIONS OF POLYMERS IN ORGANIC LIQUIDS CAN BE MANUFACTURED BY (A) PROVIDING A POLYMER LATEX CONTAINING AN ANIONIC OR CATIONIC EMULSIFIER, (B) PROVIDING A SOLUTION IN A WATER-/MMISCIBLE ORGANIC LIQUID OF S TRANSFER AGENT WHICH IS ABLE TO UNDERGO AN ION-EXCHANGE REACTION WITH SAID EMULSIFIER AS DEFINED IN C BELOW, (C) BRINGING THE LATEX OF A AND THE SOLUTION OF B INTO CONTACT WITH EACH OTHER SO THAT AN ION-EXCHANGE REACTION OCCURS BETWEEN THE TRANSFER AGENT AND THE EMULSIFIER TO FORM A REACTION PRODUCT WHOSE SOLUBILITY IS SUCH THAT IN A MIXTURE OF EQUAL PARTS BY WEIGHT OF SAID ORGANIC LIQUID AND WATER, ABOUT 90-100% BY WEIGHT OF THE REACTION PRODUCT IS DISSOLVED IN THE ORGANIC LIQUID AND ABOUT 010% BY WEIGHT IS DISSOLVED IN THE WATER, AND (D) REMOVING THE WATER FROM THE COMPOSITION. WHEN THE ORGANIC LIQUID USED IN (B) IS A SOLVENT FOR THE POLYMER AT ORDINARY TEMPERATURES, A POLYMER SOLUTION IS ONTAINED BY THE PROCESS.
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