| SUNJIN CHEMICAL Co., Ltd. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120082708 | NOVEL METHOD FOR PREPARING COMPOSITE PARTICLE COMPRISING SURFACE TREATMENT LAYER OF SUNSCREENING AGENT FORMED THEREON - The present invention relates to a method of preparing a composite powder comprising a surface treatment layer of sunscreen. The present invention prepares a composite powder comprising a surface treatment layer of sunscreen by a dry process that does not require separate dehydration and drying processes, and thus, the prepared composite powder may be uniformly surface-treated with more quantities of sunscreens compared to a composite powder comprising a surface treatment layer of sunscreen prepared by a conventional wet process, may exhibit remarkably improved sun screen effect, and be useful for a cosmetic composition. | 04-05-2012 |
| 20110048284 | Manufacturing method of modified powder - The present invention relates to a method for manufacturing modified powder, particularly to a method for dry manufacturing of modified powder comprising the steps of: a) dry mixing powder having hydroxyl group (—OH) at the end and lauroyl lysine in a reactor equipped with an agitator; and, b) agitating the reactor to coat lauroyl lysine on the surface of the powder. | 03-03-2011 |
| 20090053153 | Polymer composite particles containing sunscreen agent and manufacturing method thereof - The present invention relates to polymer composite particles containing a sunscreen agent and a manufacturing method thereof, and more particularly, to circular-shaped polymer composite particles which are a hybrid of circular-shaped polymer particles and a sunscreen agent, drastically improve dispersion stability of particles themselves, provide excellent ultraviolet absorption performance and are applicable to cosmetics, and a manufacturing method thereof. | 02-26-2009 |
| 20090035334 | METHOD FOR PREPARING POLYMETHYLMETHACRYLATE SPHERICAL BEAD - This invention provides a method for preparing a polymethylmethacrylate spherical bead and in particular, it provides a method for preparing a polymethylmethacrylate spherical bead characterized in that it is prepared by preparing polymethylmethacrylate by polymerizing methyl-methacrylate monomers, evaporating remaining methylmethacrylate monomers by raising temperature up to at least 100° C. after the polymerization reaction, and washing the polymethylmethacrylate with a mixed solvent of ethanol and water and vacuum drying them. The polymethylmethacrylate spherical beads in accordance with the invention not only can provide pure polymethylmethacrylate in its odorless condition by completely eliminating the remaining methylmethacrylate monomers that generate off-odor but also show no yellowing and at the same time, they are suitable for cosmetic materials or industrial materials because they are harmless to human and have no off-odor | 02-05-2009 |
