申请人:ENVIRONMENTAL CHEMICALS, INC.
公开号:EP0067533A1
公开(公告)日:1982-12-22
The composition comprises 35 to 99% by weight of a liquid vehicle, 0.1 to 25% by weight of a film-forming polymer which is either dissolved or dispersed in the vehicle, 1 to 40% by weight of a core agent which is insoluble in the film-forming polymer and which controls release of encapsulated material from the microcapsules (the core agent being optionally absent when the polymer is dispersed in the vehicle), and not more than 40% by weight of material to be encapsulated which is dissolved or dispersed in the liquid vehicle.
The process comprises spraying the composition into the atmosphere so as to cause the liquid vehicle to evaporate and the polymer to coacervate and form microcapsules while the composition is still in the form of a spray,
该组合物包括:35-99%(按重量计)的液体载体;0.1-25%(按重量计)的成膜聚合物,该聚合物可溶解或分散在载体中;1-40%(按重量计)的核心剂,该核心剂不溶于成膜聚合物,可控制封装材料从微胶囊中释放(当聚合物分散在载体中时,核心剂可选择不存在);不超过 40%(按重量计)的待封装材料,该材料可溶解或分散在液体载体中。 该工艺包括将组合物喷洒到大气中,使液体载体蒸发,聚合物凝聚并形成微胶囊,此时组合物仍呈喷雾形式、