Lotte Fine Chemical Co., Ltd.

Samsung Fine Chemicals Co., Ltd.

Sung Hwan Bang

Ju Hee Shin

Jin Ryul Son

Sang Youb Lee

Jyung Hee Jeon

Ji Seon Jeong

Kyung Yeol Park

Ju Young Jung

Kil Seuk Byun

Jeong Hee Chun

Kyong Min Lee

Disclosed are an aqueous composition for preparing a hard capsule, a preparation method therefor, a hard capsule, and a method for recycling hard capsule scraps. The disclosed aqueous composition for preparing a hard capsule comprises a water-soluble cellulose ether, an alcohol, and water. In addition, the method for recycling hard capsule scraps comprises the step of dissolving hard capsule scraps comprising a water-soluble cellulose ether into a mixture solution comprising water and an alcohol so as to prepare an aqueous composition for preparing a recycled hard capsule.

Aqueous composition for preparing hard capsule, preparation method therefor, hard capsule, and method for recycling hard capsule scraps

The present invention relates to a method of preparing a dry hydrogel sheet including the steps of: preparing a cellulose ether dispersion solution; transferring the dispersion solution to a coater while maintaining the temperature of the dispersion solution in the range of a gelation temperature of the dispersion solution to a boiling point of a dispersion medium; applying the dispersion solution transferred to the coater as a sheet; preparing a hydrogel sheet by cooling the applied dispersion solution to induce gelation; and drying the hydrogel sheet. Since the dry hydrogel sheet prepared by the method has a low moisture content, it is possible to ensure the stability of active ingredients, quantify functional components to be applied to the dry hydrogel sheet, and ensure the uniformity of the surface appearance and thickness of the dry hydrogel sheet, which results in the improvement of the quality of a final product.

Method of preparing dry hydrogel sheet and dry hydrogel sheet prepared by the same

The present invention relates to a composition for a hydrogel sheet including a cellulose ether, a gelling agent, and a gelling promoter, a hydrogel sheet prepared therefrom, and a method of preparing the hydrogel sheet. According to the present invention, the composition for a hydrogel sheet can be used to prepare a hydrogel sheet capable of maintaining the shape thereof without a support by limiting a type of the gelling agent and/or a viscosity of the cellulose ether included in the composition.

Composition for hydrogel sheet, hydrogel sheet manufactured therefrom, and method for manufacturing same

Disclosed are a method for preparing hydroxypropyl methylcellulose acetate succinate (HPMCAS) grains and HPMCAS grains. The disclosed method for preparing HPMCAS grains comprises: a step of esterifying hydroxypropyl methylcellulose (HPMC), acetic anhydride, and succinic anhydride in a reaction medium in the presence of a catalyst so as to obtain a reaction solution containing HPMCAS (esterification step); and a step of continuously or intermittently putting the reaction solution into water so as to form grains (granulating step).

Method for preparing hydroxypropyl methylcellulose acetate succinate (HPMCAS) grains having controlled grain size distribution, and HPMCAS powder

The inventive concept relates to a laminated film and a method of laminating films, and the disclosed laminated film includes at least two films sequentially stacked and bonded to each other, wherein each of the films may be each independently a gastric film or an enteric film.

Laminated film and method for laminating films

A film and a method of preparing the same. The film includes cellulose ether and sodium chloride, wherein an amount of the sodium chloride is from about 0.25 wt % to about 0.6 wt % based on a total weight of the film, and the film has a light-transmission reduction ratio of about 15% or less.

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Incheon, South Korea

Sung Hwan Bang