Reactive, acrylic resin micro-particles, its preparation and curable composition containing the same
申请人:Nippon Paint Co., Ltd.
公开号:EP0220862A2
公开(公告)日:1987-05-06
A reactive acrylic resin micro-particle comprising a particulate body resin and a number of linear segments attached to said body resin and extending outwardly therefrom, said particulate body resin being composed of an internally gellated acrylic resin and having a mean grain diameter of 0.01 to 20 µ and said linear segments each being composed of a linear carbon chain of 1 to 100 carbon atoms, which may be interrupted by an oxygen, sulfur or nitrogen atom, which is connected at one end to said particulate body resin through a urethane, acyl urethane, urea or acyl urea bond and possessed of at the other end an ethylenically unsaturated bond. The invention also includes the preparation of said microparticles and a curable acrylic composition containing said microparticies, at least one polymerizable monomer or oligomer and a polymerization initiator.
Resinous microparticles useful in powdery toner for electrophotography
申请人:Nippon Paint Co., Ltd.
公开号:EP0324529A2
公开(公告)日:1989-07-19
Resinous microparticles useful in toner for electrophotography which are made of vinyl resin obtained by emulsion polymerization of at least one α,β-ethylenically unsaturated monomers in the presence of cationic surfactant having an onium salt structure and a polymerization initiator having an amidine or amidine salt structure and whose average particle diameter is in a range of from 0.01 to 1µ, and toner composition comprising toner particles and resinous microparticles as abovementioned are provided.