Spherical composite composition and process for producing spherical composite composition
OwnerMakoto Someda, Satoshi Akiyama +1inventors
InventorsMakoto Someda, Satoshi Akiyama, Kyoji Kuroda
Life of this patent
Estimating the term…
Abstract
A material comprising a resin comprising unsaturated vinyl units and a magnetic material; a spherical composite composition, which is produced by a simple production process having high productivity without the need of two or more production steps; and a process of producing the spherical composite composition are set forth. The spherical composite composition can be obtained by adding a magnetic material to an aqueous medium having a resin dispersed therein, dispersing the material in the medium, and then forming the dispersion into particles by spray drying.
Claims22
A spherical composite composition which is made by adding (B) 5 to 1,000 parts by weight of a magnetic material having the longest length in two-dimensional projection of 0.01 to 50 μm, relative to 100 parts by weight of a resin comprising unsaturated vinyl units having (A-1) a glass transition temperature of 50 to 150° C. and (A-2) a weight average molecular weight of 10,000 to 1,000,000, wherein the average particle diameter is 1 to 100 μm, and the sphericity is 0.7 to 1.
A process of producing a spherical composite composition which is the obtained by adding (B) 5 to 1,000 parts by weight of a magnetic material having the longest length in two-dimensional projection of 0.01 to 50 μm, relative to 100 parts by weight of a resin dispersed in an aqueous medium comprising unsaturated vinyl units having (A-1) an average particle diameter of 0.01 to 1 μm, (A-2) a glass transition temperature of 50 to 150° C., and (A-3) a weight average molecular weight of 10,000 to 1,000,000, dispersing the material in the medium, and then forming the dispersion into particles by spray drying, wherein the average particle diameter is 1 to 100 μm, and the sphericity is 0.7 to 1.
Dependencies are inferred from the claim text.