公开(公告)号：US3878121A

公开(公告)日：1975-04-15

申请号：US31293272

申请日：1972-12-07

Applicant: POUDRES & EXPLOSIFS STE NALE

Inventor： ROCHE GERARD ,  DUMAS BERNARD

IPC: C22B26/10 ,  B01J13/08 ,  B01J13/10 ,  C08G18/00 ,  C08G18/48 ,  C09K3/00 ,  B01J13/02 ,  B44D1/02 ,  B44D1/44

CPC classification number: C08G18/4879 ,  B01J13/10 ,  C08G18/00 ,  Y10T428/2989 ,  Y10T428/2998

Abstract: The present invention relates to a method of encapsulation by coacervation of fine particles of a very reactive substance such as an alkali metal or a very powerful reducing agent. The said substance is suspended in a polyurethane resin solution made up of constituents which do not react with the substance, the coacervate is obtained by adding more of one of the constituents of the solution, the resulting mixture is dispersed in a slightly polar liquid which does not mix with the mixture and contains in solution an agent for cross-linking polyurethane resin, and the encapsulated substance is then separated from the liquid and dried.

Abstract translation: 本发明涉及通过凝聚诸如碱金属或非常强大的还原剂的非常反应性物质的微粒的包封的方法。 所述物质悬浮在由与物质不反应的成分组成的聚氨酯树脂溶液中，通过加入更多的溶液成分获得凝聚体，所得混合物分散在稍微极性的液体中 不与混合物混合，并在溶液中含有交联聚氨酯树脂的试剂，然后将包封的物质与液体分离并干燥。