Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Reexamination Certificate
2011-05-24
2011-05-24
Kiliman, Leszek (Department: 1788)
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
C428S403000, C428S407000, C427S212000
Reexamination Certificate
active
07947369
ABSTRACT:
Fine spherical thermoplastic resin particles are produced by preparing a resin composition including a matrix of a water-soluble material, and fine particles of a water-insoluble thermoplastic resin dispersed in the matrix, the fine particles and the matrix each being melted or softened in the resin composition; cooling and solidifying the resin composition under such conditions that the resin composition does not undergo deformation due to stress; and removing the water-soluble material by washing with water to thereby yield fine spherical particles containing the water-insoluble thermoplastic resin. This method has wide applicability, applies less loads on the environment, does not require special devices, can be easily conducted, and can efficiently produce such particles. The resulting particles are highly spherical.
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STN Chemical Abstract;, 1985, XP002111078.
Birch & Stewart Kolasch & Birch, LLP
Daicel-Degussa Ltd.
Kiliman Leszek
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