A microcapsule and a microcapsule toner each comprising a core material and an outer shell, in which the outer shell contains a vinyl polymer and a polymer comprising at least two monomers copolymerizable with each other on the surface of the core material, and a process for producing a microcapsule, which comprises the steps of: emulsifying a lipophilic core material in an aqueous medium; and causing at least two monomers copolymerizable with each other to copolymerize, in the presence of a vinyl polymer, on the surface of the oil droplets of the core material in the resulting emulsion to form an outer shell.
Method for modifying the surface of polymer materials
申请人:NIPPON OIL AND FATS COMPANY, LIMITED
公开号:EP0124347A1
公开(公告)日:1984-11-07
A block copolymer consisting of a hydrophilic polymer portion and a polymer portion having a compatibility with a polymer material can be easily synthesized in the presence of a polymeric peroxide or a polyazo compound, and can modify easily and permanently the surface of the polymer material.
Process for preparing particles of olefin-maleic anhydride copolymer
申请人:Kao Corporation
公开号:EP0292797A2
公开(公告)日:1988-11-30
A copolymer of an olefin and maleic anhydride is produced in the form of particles by co-polymerizing an olefin having 2 to 8 carbon atoms with maleic anhydride in a solvent capable of dissolving both co-monomers, but incapable of dissolving the copolymer in the presence of a dispersant of an oil-soluble, cationic copolymer comprising (a) ethylenically unsaturated monomer units having cationic groups of a quaternary ammonium salt and (b) lipophilic, ethylenically unsaturated monomer units. It has a relatively uniform particle size distribution.
An anti-fogging resin film-forming composition, comprising a block or graft copolymer and a surfactant, each of which block and graft copolymers consists of a hydrophilic polymer segment and a hydrophobic polymer segment having specifically limited monomer compositions, is disclosed. A coating film formed on a matrix surface from the composition has a durable excellent anti-fogging property and having high adhesion to the matrix surface and high strength.
A method of making vinyl-silicone copolymers using mercapto functional silicone chain-transfer agents and release coatings made therewith
申请人:MINNESOTA MINING AND MANUFACTURING COMPANY
公开号:EP0421588A2
公开(公告)日:1991-04-10
A method of preparing vinyl-silicone copolymers which involves the use of a mercapto-functional silicone compound as a macromolecular chain transfer agent. Release coatings and low adhesion backsizes comprising the vinyl-silicone copolymers.