Patent application number | Description | Published |
20110086948 | NYLON-4 COMPOSITE - The present invention provides a nylon-4 composite containing a nylon-4 resin as a base material, a natural fiber material, and a maleic anhydride graft poly(ethylene-octene) copolymer resin. The nylon-4 composite of the present invention has high heat resistance and impact resistance to provide mechanical properties equivalent or superior to those of the engineering plastics synthesized from petroleum resources. As a result, the nylon-4 composite of the present invention has as excellent properties as the engineering plastics and is an environment-friendly material, thus being useful to make various industrial components including vehicle engine and chassis components. | 04-14-2011 |
20110190437 | POLYLACTIC ACID COMPOSITES - The present invention features polylactic acid composite compositions, more particularly a composite composition. The provided polylactic acid composite composition preferably includes the biomaterial polylactic acid resin and, accordingly, it is capable of effectively reducing carbon dioxide emission. Hence, it goes along with the low-carbon, green growth initiative. Further, with improved mechanical strength and heat resistance, it is usefully applicable to automotive interiors/exteriors, construction interiors, etc. | 08-04-2011 |
20110190448 | POLYPROPYLENE-POLYLACTIC ACID COMPOSITES - Disclosed is a polypropylene-polylactic acid composite composition, in which a maleic anhydride grafted ethylene-octene copolymer is included as a compatiblilizer. Since the provided polylactic acid composite composition includes the biomaterial polylactic acid resin, it is capable of effectively reducing carbon dioxide emission. Hence, it goes along with the low-carbon, green growth initiative. Further, with improved mechanical strength and heat resistance, it is usefully applicable to automotive interiors/exteriors, construction interiors, etc. | 08-04-2011 |
20110256596 | MANUFACTURING METHOD OF OPTICALLY ACTIVE D TYPE LACTIC ACID USING BYPRODUCTS PREPARED FROM RICE POLISHING PROCESS - Disclosed is a method for manufacturing D type lactic acid wherein byproducts (e.g., rice bran and pulverized rice) obtained during a rice polishing process are saccharified by using α-amylase and amyloglucosidase and then fermented by a microorganism, | 10-20-2011 |
20110257323 | ECO-FRIENDLY POLYPROPYLENE-POLYLACTIC ACID COMPOSITE COMPOSITION - The present invention relates to a polypropylene-polylactic acid composite composition comprising a mixture of polypropylene resin and polylactic acid resin, wherein ethylene-octene copolymer grafted by anhyrdrous maleic acid, polylactic acid resin grafted by anhydrous maleic acid, polyethylene-glycidyl methacrylate resin and talc particles are added thereto. The composition reduces CO | 10-20-2011 |
20120245292 | MANUFACTURING METHOD OF POLYLACTIC ACID COMPOSITE COMPOSITION - Disclosed is a method for manufacturing a polylactic acid composite composition, and a polylactic acid composite composition formed thereby. More particularly, there is disclosed a method for manufacturing a polylactic acid composite composition including: melting and blending a composition containing 60-80 wt % of a poly(L-lactic acid) resin, 15-30 wt % of a poly(D-lactic acid) resin and 5-10 wt % of a poly(ethylene-alkyl acrylate-glycidyl methacrylate) resin at 190-195° C.; and injecting the resulting melt in a mold whose surface temperature is 100-110° C. The present invention provides a material having superior heat resistance, impact strength and tensile strength by blending the PLLA resin, the PDLA resin and the poly(ethylene-alkyl acrylate-glycidyl methacrylate) resin at specific proportion, under controlled processing and molding conditions. The polylactic acid composite composition prepared according to the present invention can replace the petroleum-based general-use polymer resins and engineering plastic materials that have been used for automobile parts with the environment-friendly biomass-based biomaterials, and may be usefully utilized for automobile interior and exterior parts. | 09-27-2012 |
20120245321 | MANUFACTURING LACTIDE FROM LACTIC ACID - Disclosed is a method for manufacturing | 09-27-2012 |
20120245322 | MANUFACTURING LACTIDE FROM LACTIC ACID - Disclosed is a method for manufacturing D-lactide from liquid D-lactic acid and a method for manufacturing D-polylactic acid with a weight-average molecular weight 50,000-20,000 g/mol from the prepared D-lactide. The disclosed method is advantageous in that D-lactide can be prepared in high yield through a relatively simple process as compared to the existing method. Thus, the cost for producing D-polylactic acid from the D-lactide can be reduced. | 09-27-2012 |
20120270303 | MANUFACTURING METHOD OF HIGH CONTENT OF STARCH FROM MICROALGAE - The present invention provides a medium for culturing microalgae comprising NaNO | 10-25-2012 |
20120302724 | MANUFACTURING METHOD OF LACTIDE FROM LACTIC ACID - The present invention provides a method of producing D-type lactide from liquid D-type lactic acid, and a method for producing D-type polylactic acid having a weight average molecular weight of about 50,000˜20,000 g/mol from the produced D-type lactide. The method of the present invention is advantageous in that D-type lactide can be obtained at a high yield by a simple method, compared to the conventional production methods. Consequently, production cost of D-type polylactic acid that is finally obtained from D-type lactide can be reduced. | 11-29-2012 |
20130029389 | METHOD FOR PRODUCING D TYPE LACTIC ACID WITH HIGH OPTICAL PURITY - The present invention provides a method for producing D-type lactic acid by using | 01-31-2013 |
20130030129 | MANUFACTURING METHOD OF POLY LACTIC ACID STEREOCOMPLEX USING SOLVENT CASTING METHOD - Disclosed is a method for manufacturing a polylactic acid film. More specifically, the present invention relates to a method for stably and effectively obtaining optimized stereocomplex crystals through specified boiling point and evaporation time of a solvent allowing the content of stereocomplex crystals to be 100%. | 01-31-2013 |
20130030147 | MANUFACTURING METHOD OF COLORED POLYLACTIC ACID RESIN - Disclosed is a technique of providing color to a polylactic acid resin which is promising as a plant-derived material for automotive interior/exterior parts. When a polylactic acid material is used as a covering fiber material of an automotive interior part, coloring is necessary for harmonization with other parts in the car. According to the disclosed technique, color is provided to a polylactic acid resin using a combination of a catalyst and an initiator when it is polymerized from lactide. The disclosed method is time-saving and economical since a colored resin can be polymerized and thus the complicated process of dyeing a white resin using a disperse dye and washing and drying the same can be avoided. | 01-31-2013 |
20130053464 | PREPARATION METHOD OF FLEXIBLE POLYLACTIDE STEREOCOMPLEX AND THE COMPOUND THEREOF - Disclosed are a polylactide stereocomplex with improved thermal stability and thus improved processability and a method for preparing the same. In order to confer flexibility to polymer chains, | 02-28-2013 |
20130266995 | METHOD FOR PRODUCING D-TYPE LACTIC ACID - The present invention provides a method for producing D-type lactic acid, by a sugar fermentation of sugar. In accordance with the method of the invention, lactic acid produced during the fermentation reaction is selectively absorbed and detached using an active carbon stick. The method does not require steps, such as, lactate concentration and electrodialytic water splitting that are required during the lactic acid fermentation process. According to the invention, D-type lactic acid can be produced in a high purity and with a high yield. Further, the time and cost associated with the separation process can be reduced in a great extent, thereby offering advantageous effects from a commercial perspective. | 10-10-2013 |
20130266996 | METHOD AND APPARATUS FOR PRODUCING LACTIC ACID - The present invention provides an apparatus and a method for producing lactic acid, wherein only lactic acid is selectively absorbed and separated from fermentation liquor using a lactic acid absorption resin and wherein a neutralizing agent is not used. The present invention does not include a neutralizing process and a process of converting lactate to lactic acid. The method of the present invention comprises the steps of: adding and mixing a culture medium, microorganism and sugar in a fermenter; passing a fermentation liquor through a microorganism filtration unit to remove microorganism through a cross-flow filtration; and selectively absorbing and separating lactic acid from filtered liquid using a lactic acid absorption resin. Accordingly, the separation and purification process of lactic acid from a fermentation liquor for polymerization is simplified. The manufacturing cost is thus reduced. The apparatus of the invention includes a fermenter for lactic acid fermentation; a filtration unit for removing a microorganism present in a fermentation liquor; and a lactic acid absorption resin for selectively absorbing lactic acid from a filtered liquid. | 10-10-2013 |
20130267716 | METHOD OF PREPARING LACTIDE FROM LACTATE - The present invention provides a method of preparing lactide with a high yield from lactate obtained through a fermentation process. In certain embodiments, the invention provides a method of preparing high-purity lactide with a high yield, wherein the method comprises treating lactate with a specific solvent, using a catalyst, and phase-separating the resultant. In accordance with the invention, costs for manufacturing polylactic acid can be considerably reduced. | 10-10-2013 |
20150057385 | PREPARATION METHOD OF FLEXIBLE POLYLACTIDE STEREOCOMPLEX AND THE COMPOUND THEREOF - Disclosed are a polylactide stereocomplex with improved thermal stability and thus improved processability and a method for preparing the same. In order to confer flexibility to polymer chains, | 02-26-2015 |