Abstract: The present invention relates to a method for preparing a curable bicyclic compound derived from biomass. The method includes preparing starting materials furan and methyl acrylate by preparing furan from hemicellulose extracted from biomass, and methyl acrylate from glycerol generated from biomass, preparing an intermediate compound comprising a bicycle and an alcohol functional group by reacting the furan and the methyl acrylate through a Diels-Alder reaction and consecutive reduction, and preparing a curable bicyclic compound that includes the bicycle and an epoxide functional group by reacting the intermediate compound and epichlorohydrin.

Abstract: The present invention relates to a curable bicyclic compound derived from biomass, solvent-free curable composition and a method for preparing thereof. The curable compound derived from biomass according to the invention comprises a bicycle structure, to which one of two epoxide functional groups are bonded.

Abstract: The present disclosure relates to a device for transferring dental prosthesis. The device includes: a main body having defined therein an elongated inner space opened toward the front; a separation tip coupled to a front end of the main body and having a first through-passage fluidically communicating with the inner space of the main body; a pressure sensitive adhesive means attached to a front end of the separation tip and having a second through-passage fluidically communicating with the first through-passage of the separation tip; a wire disposed within the inner space of the main body and the through-passages; a finger guide mounted on the outer circumference of the main body and configured to forwards and rearwards move the front end of the wire through the manipulation thereof at the outside of the main body; and a separation means configured to separate the separation tip from the main body.

Abstract: The present invention relates to a curable bicyclic compound derived from biomass, solvent-free curable composition and a method for preparing thereof. The curable compound derived from biomass according to the invention comprises a bicycle structure, to which one of two epoxide functional groups are bonded.

Abstract: The present invention relates to a method for preparing 5-acetoxymethylfurfural, comprising a step of synthesizing 5-acetoxymethylfurfural by reacting 5-halomethyl furfural with alkylammonium acetate. The present invention can provide a method for preparing 5-acetoxymethylfurfural which is economic and has high reaction efficiency even without using an additional base.

Abstract: The present disclosure relates to a method for preparing a disubstituted urea and carbamate compounds simultaneously through a one-pot reaction of an amine, carbon dioxide and an alkylene oxide compound in the presence of an ionic liquid-based complex catalyst system containing indium. In accordance with the present disclosure, a disubstituted urea and carbamate compounds can be prepared simultaneously at high yield. In addition, the ionic liquid-based catalyst containing indium according to the present disclosure is economical because it can be reused several times.

Abstract: The present disclosure relates to a method for preparing a disubstituted urea and carbamate compounds simultaneously through a one-pot reaction of an amine, carbon dioxide and an alkylene oxide compound in the presence of an ionic liquid-based complex catalyst system containing indium. In accordance with the present disclosure, a disubstituted urea and carbamate compounds can be prepared simultaneously at high yield. In addition, the ionic liquid-based catalyst containing indium according to the present disclosure is economical because it can be reused several times.

Abstract: Provided herein is a method for producing 5-hydroxymethyl-2-furfural (HMF) from maize syrup containing fructose including a conversion step in which a reaction product containing the 5-hydroxymethyl-2-furfural is produced by mixing and heating the maize syrup, a dioxane solvent and a solid acid catalyst, thus providing an advantage that the solvent can be easily isolated and the isolated solvent can be reused because dioxane is used as the solvent, and an advantage that the catalyst can be easily isolated and the isolated catalyst can be easily reused because a nonuniform solid acid catalyst is used.

Abstract: Provided herein is a photocurable dianhydrohexanehexol derivative, a method preparing the same, and a composition including the same, for example, to a photocurable compound derived from environmentally friendly biomass, the compound having a structure where a 2-hydroxypropyl methacrylate (HPM) functional group prepared by reacting a biomass derived dianhydrohexanehexol (1,4:3,6-dianhydro-d-hexane-1,2,3,4,5,6-hexol, DHH) compound under an optimal reaction condition is combined, a preparing method thereof, and a photocurable composition comprising the photocurable compound.

Abstract: The present invention relates to a furan-based curable compound derived from carbohydrate-based biomass, to a solvent-free curable composition, and to a method for preparing thereof, wherein the furan-based curable compound derived from biomass according to the present invention includes two epoxide functional groups bonded to at least one furan-based compound. The present invention may provide an environmentally friendly next-generation curable compound comprising a novel furan-based compound derived from biomass, which may be substituted for curable materials derived from oil resources, as a basic backbone, as well as a composition containing the same. According to the present invention, a curable material, which has a low contraction ratio during curing as compared to conventional radical-type curing materials, may be obtained, and a compound applied to the novel curing material may be prepared with a combination of excellent efficiency and cost-effectiveness.

Abstract: The present disclosure relates to a method for preparing a disubstituted urea and carbamate compounds simultaneously through a one-pot reaction of an amine, carbon dioxide and an alkylene oxide compound in the presence of an ionic liquid-based complex catalyst system containing indium. In accordance with the present disclosure, a disubstituted urea and carbamate compounds can be prepared simultaneously at high yield. In addition, the ionic liquid-based catalyst containing indium according to the present disclosure is economical because it can be reused several times.

Abstract: The present invention relates to a method for preparing 5-acetoxymethylfurfural, comprising a step of synthesizing 5-acetoxymethylfurfural by reacting 5-halomethyl furfural with alkylammonium acetate. The present invention can provide a method for preparing 5-acetoxymethylfurfural which is economic and has high reaction efficiency even without using an additional base.

Abstract: Provided herein is a method for producing 5-hydroxymethyl-2-furfural (HMF) from maize syrup containing fructose including a conversion step in which a reaction product containing the 5-hydroxymethyl-2-furfural is produced by mixing and heating the maize syrup, a dioxane solvent and a solid acid catalyst, thus providing an advantage that the solvent can be easily isolated and the isolated solvent can be reused because dioxane is used as the solvent, and an advantage that the catalyst can be easily isolated and the isolated catalyst can be easily reused because a nonuniform solid acid catalyst is used.

Abstract: This invention relates to a method of, in an eco-friendly manner, preparing a furfuranol-based compound and a 2-furancarboxylic acid-based compound using an ionic liquid as a reaction solvent, which includes reacting a furfural-based compound with a hydroxide of an alkali metal or an alkaline earth metal using an ionic liquid as the solvent, thus obtaining a furfuranol-based compound and a 2-furancarboxylic acid-based compound, and in which water is not used as the reaction solvent, thus preventing the generation of reaction wastewater, and the ionic liquid used as the solvent can be easily recovered and reused.

Abstract: Provided herein is a photocurable dianhydrohexanehexol derivative, a method preparing the same, and a composition including the same, for example, to a photocurable compound derived from environmentally friendly biomass, the compound having a structure where a 2-hydroxypropyl methacrylate (HPM) functional group prepared by reacting a biomass derived dianhydrohexanehexol (1,4:3,6-dianhydro-d-hexane-1,2,3,4,5,6-hexol, DHH) compound under an optimal reaction condition is combined, a preparing method thereof, and a photocurable composition comprising the photocurable compound.

Abstract: The present invention relates to a curable bicyclic compound derived from biomass, solvent-free curable composition and a method for preparing thereof. The curable compound derived from biomass according to the invention comprises a bicycle structure, to which one of two epoxide functional groups are bonded.

Abstract: This invention relates to a method of, in an eco-friendly manner, preparing a furfuranol-based compound and a 2-furancarboxylic acid-based compound using an ionic liquid as a reaction solvent, which includes reacting a furfural-based compound with a hydroxide of an alkali metal or an alkaline earth metal using an ionic liquid as the solvent, thus obtaining a furfuranol-based compound and a 2-furancarboxylic acid-based compound, and in which water is not used as the reaction solvent, thus preventing the generation of reaction wastewater, and the ionic liquid used as the solvent can be easily recovered and reused.

Abstract: The present invention relates to a curable bicyclic compound derived from biomass, solvent-free curable composition and a method for preparing thereof. The curable compound derived from biomass according to the invention comprises a bicycle structure, to which one of two epoxide functional groups are bonded.

Abstract: The present invention relates to a furan-based curable compound derived from carbohydrate-based biomass, to a solvent-free curable composition, and to a method for preparing thereof, wherein the furan-based curable compound derived from biomass according to the present invention includes two epoxide functional groups bonded to at least one furan-based compound. The present invention may provide an environmentally friendly next-generation curable compound comprising a novel furan-based compound derived from biomass, which may be substituted for curable materials derived from oil resources, as a basic backbone, as well as a composition containing the same. According to the present invention, a curable material, which has a low contraction ratio during curing as compared to conventional radical-type curing materials, may be obtained, and a compound applied to the novel curing material may be prepared with a combination of excellent efficiency and cost-effectiveness.