Abstract: Disclosed are a method of preparing a resin powder and an integrated reactor for the same. When a coagulation process is performed using an acidic coagulant in the integrated coagulator for latex coagulation and aging according to the present invention, a remaining acidic coagulant is also removed from a reactor through neutralization, and thus, a resin powder having enhanced moist-heat resistance and thermal stability may be prepared.

Abstract: Disclosed are a thermoplastic resin composition and a method of preparing the same. More particularly, the present invention relates to a thermoplastic resin composition including 10 to 90% by weight of a graft copolymer resin coagulated by an organic acid or an organic acid salt; and 90 to 10% by weight of a non-graft copolymer resin and having a moist-heat characteristic of 20 or less, wherein a refractive index difference between the graft copolymer resin and the non-graft copolymer resin is less than 0.01, a method of preparing the same, and a molded product comprising the same. According to the present disclosure, provided are a thermoplastic resin composition having superior overall property balance, color, and transparency, and being applicable to products that are exposed to high-temperature water or should be sterilized, due to excellent moist-heat resistance thereof, a method of preparing the same, and a molded product comprising the same.

Abstract: The present invention relates to a thermoplastic resin. In accordance with the present invention, a thermoplastic resin exhibiting superior heat resistance, gloss, and whiteness while having mechanical properties identical to or higher than those of a conventional thermoplastic resin and a thermoplastic resin composition including the same are provided.

Abstract: Disclosed are a thermoplastic resin composition and a method of preparing the same. More particularly, the present invention relates to a thermoplastic resin composition including 10 to 90% by weight of a graft copolymer resin coagulated by an organic acid or an organic acid salt; and 90 to 10% by weight of a non-graft copolymer resin and having a moist-heat characteristic of 20 or less, wherein a refractive index difference between the graft copolymer resin and the non-graft copolymer resin is less than 0.01, a method of preparing the same, and a molded product comprising the same. According to the present disclosure, provided are a thermoplastic resin composition having superior overall property balance, color, and transparency, and being applicable to products that are exposed to high-temperature water or should be sterilized, due to excellent moist-heat resistance thereof, a method of preparing the same, and a molded product comprising the same.

Abstract: Provided are methods and devices for preparing biuret and cyanuric acid by thermal decomposition of urea. Specifically, a product of thermal decomposition is cooled to precipitate a crystal and the precipitated crystal is dissolved using an alkali aqueous solution and cooled to obtain biuret having high purity. Furthermore, the cyanuric acid that is one of byproducts by the thermal decomposition of urea is effectively recovered with high purity.

Abstract: Provided are methods and devices for preparing biuret and cyanuric acid by thermal decomposition of urea. Specifically, a product of thermal decomposition is cooled to precipitate a crystal and the precipitated crystal is dissolved using an alkali aqueous solution and cooled to obtain biuret having high purity. Furthermore, the cyanuric acid that is one of byproducts by the thermal decomposition of urea is effectively recovered with high purity.