Abstract: The present invention relates to an alpha lipoic acid capsule composition stabilized in aqueous phase, which can effectively prevent alpha lipoic acid from decomposing due to external environmental conditions, such as water, temperature, light, and the like, and can maintain the stability of alpha lipoic acid from the interaction between the lipoic acid and other materials, which are added together with the lipoic acid when the lipoic acid is applied to cosmetics, foods, or medical supplies, by mixing water-dispersed alpha lipoic acid, a water-insoluble polymer having self-emulsification properties, and a hydrophilic solvent, thus capsulating alpha lipoic acid, and to a method of preparing the same.
Type:
Application
Filed:
April 26, 2006
Publication date:
September 23, 2010
Applicant:
DPI SOLUTIONS, INC.
Inventors:
Chul Hwan Kim, Ki Seok Park, Hyun Nam Yoon
Abstract: The present invention relates to a composition for coating an organic electrode and method of manufacturing an organic electrode having a excellent transparency using the composition comprising 3% to 20% by weight of a polyhydric alcohol, polyol or a mixture thereof, 5% to 10% by weight of a primary alcohol having C1 to C5, 5% to 25% by weight of a amide, sulfoxide or a mixed solvent thereof, 0.01% to 0.1% by weight of a surfactant and a aqueous solution of polyethylenedioxythiophene (PEDOT) conductive polymers having nano-sized particle in a remainder. The present invention indicates the excellent transparency that transmittance of organic conductive layer is more than 90% in the visible ray area and sheet resistance is 300 to 900 ?/sq in case of coating.
Type:
Grant
Filed:
March 15, 2005
Date of Patent:
July 1, 2008
Assignee:
DPI Solutions, Inc.
Inventors:
Jong-Woo Lee, Chul-Hwan Kim, Hyun-Nam Yoon
Abstract: The present invention relates to a composition for stabilizing vitamine C in water phase and method for stabilizing vitamine C using the composition. More particularly, this invention relates to a composition wherein the vitamine C is effectively prevented from decomposing by an exterior environment such as water, temperature, and light by stabilizing the vitamine C with the use of a cationic polymer and an anionic polymer, and thereof method for stabilizing vitamine C.
Abstract: The present invention relates to a composition for coating an organic electrode and method of manufacturing an organic electrode having a excellent transparency using the composition comprising 3% to 20% by weight of a polyhydric alcohol, polyol or a mixture thereof, 5% to 10% by weight of a primary alcohol having C1 to C5, 5% to 25% by weight of a amide, sulfoxide or a mixed solvent thereof, 0.01% to 0.1% by weight of a surfactant and a aqueous solution of polyethylenedioxythiophene (PEDOT) conductive polymers having nano-sized particle in a remainder. The present invention indicates the excellent transparency that transmittance of organic conductive layer is more than 90% in the visible ray area and sheet resistance is 300 to 900 ?/sq in case of coating.
Abstract: Disclosed herein are a composition for stabilizing Epigallocatechin gallate (EGCG) in water phase comprising 0.1-25.0% by weight of Epigallocatechin gallate, 0.1-5.0% by weight of a cationic polymer, an anionic polymer or a mixture thereof, 0.1-10.0% by weight of antioxidant in a remainder of water or the mixture of water and a hydrophilic solvent and a preparation method thereof. The composition is not easily decomposed in water phase as well as in external envionment consisting of temperature change, light effect etc. because the composition is stabilized by reacting with a cationic polymer or an anionic polymer.
Type:
Application
Filed:
March 15, 2005
Publication date:
August 9, 2007
Applicant:
DPI SOLUTIONS, INC.
Inventors:
Chul-Hwan KIM, Kyung-Hee KIM, Hyun-Nam YOON
Abstract: A color toner composition includes dyed toner resin particles having a volume average diameter in the range of from about 2 microns to about 10 microns with a size distribution span value of less than 1.0. Preferred particles are characterized further by a micro-serrated surface exhibiting a roughness index value larger than about 1.2. The resin toner particles are prepared utilizing a dye-mediating co-solvent which facilitates transfer from a dispersion medium to the resin particles.
Type:
Grant
Filed:
May 18, 2001
Date of Patent:
April 8, 2003
Assignee:
DPI Solutions, Inc.
Inventors:
Chul-Hwan Kim, Eui-Jun Choi, Tae-Ho Park, Seok-Jin Kim, Hyun-Nam Yoon
Abstract: A particulate composition suitable for making color toner includes resin particles optionally containing a charge control agent. The particles are characterized by a micro-serrated surface exhibiting a surface roughness index of at least about 1.2 and preferably higher. A process for making the particulate composition utilizes a vaporizable plasticizer.
Type:
Grant
Filed:
May 18, 2001
Date of Patent:
March 11, 2003
Assignee:
DPI Solutions, Inc.
Inventors:
Chul-Hwan Kim, Seung-Wook Lim, Tae-Ho Park, Hyun-Nam Yoon
Abstract: A particulate toner composition is provided with toner resin particles containing a resin component, a colorant component, and optionally a charge control agent characterized in that the toner resin particles have a micro-serrated surface exhibiting a surface roughness index of greater than about 1.2. The novel toner particles are produced by employing a vaporizable plasticizer which is flashed off during processing.
Type:
Grant
Filed:
May 18, 2001
Date of Patent:
October 8, 2002
Assignee:
DPI Solutions, Inc.
Inventors:
Chul-Hwan Kim, Seung-Wook Lim, Jongkwan Kim, Hyun-Nam Yoon