LG Chem

The present specification discloses a resin composition and a use thereof. In the present application, it is possible to provide a resin composition or a cured product thereof that exhibits low adhesion force to a predetermined adherend while exhibiting high thermal conductivity. Also, in the present application, the low adhesion force can be achieved without using an adhesion force adjusting component such as a plasticizer or in a state where the use ratio thereof is minimized. The present application can also provide a product comprising the resin composition or the cured product thereof.

The present disclosure relates to a preparation method of a monomer for synthesizing recycled plastic, the method comprising the steps of: a step of recovering an aromatic diol compound obtained from the depolymerization reaction of a polycarbonate-based resin; a step of melting the aromatic diol compound; a step of crystallizing the melted aromatic diol compound; and a step of obtaining the crystallized aromatic diol compound, and a monomer for synthesizing recycled plastic, a recycled plastic and a molded product using the same.

Provided is a method for concentrating a sodium hydroxide aqueous solution including: in a stepwise concentration process of sodium hydroxide aqueous solution, including a concentration part in which a plurality of evaporators from a first evaporator to a nth evaporator are connected in series, adding a sodium hydroxide aqueous solution to the first evaporator and then performing evaporation to obtain a first sodium hydroxide concentrate, and recovering steam evaporated from the sodium hydroxide aqueous solution; and adding the first sodium hydroxide concentrate to an evaporator at a subsequent stage, and adding the steam recovered from the first evaporator to a mechanical vapor recompression device to perform compression, wherein the nth evaporator uses the compressed steam as a heat source.

The present invention relates to a polyester resin composition, a method of preparing the same, and a molded article manufactured using the same. The polyester resin composition according to the present invention may have excellent large-area, low-strain characteristics by using a large-area low-strain material as a raw material, satisfy the physical property balance between mechanical properties, fluidity, and thermal stability, suppress fogging even at high temperatures, and thus provide excellent product reliability and appearance to a molded article manufactured using the polyester resin composition.

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