Abstract: A polylactide resin composition used in combination with a specific nucleating agent, which can relatively increase the mobility of high molecular weight of the polylactide resin to improve the crystallinity degree, and at the same time, causes an amorphous region of the polylactide resin to have a low glass transition, thereby lowering the glass transition temperature of the polylactide resin composition, and simultaneously improving the crystallinity degree thereof.

Abstract: A polylactide resin achieved by using a composition containing a polylactide resin, a phosphorus-based compound, an anhydride-based compound, and a compound of Chemical Formula 1: where R is as a branching agent resulting in a polylactide resin having a high degree of branching that has not been previously achieved, and the highly branched polylactide resin can be used in processes in which it was difficult to use conventional polylactide resins, such as expanded foam.

Abstract: A method for preparing a polylactic acid polymer excellent in color characteristics while having high molecular weight by using a combination of a tin-based catalyst and a phosphinite-based cocatalyst in a ring-opening polymerization reaction of a polylactic acid oligomer.

Abstract: A polylactide resin composition that includes a specific branching agent, a phosphorus compound, an organic acid anhydride, and a polylactide resin, resulting in a highly branched polylactide resin, which had not been previously achieved, is possible, exhibiting improved physical properties, especially melt strength, are improved compared to conventional polylactide resins, and it can be applied in processes that were difficult to apply conventional polylactide resins, such as expanded foam.

Abstract: The present invention provides an isolation method enabling lactide racemate to be isolated in a high yield and with high efficiency without concern for side reactions even if L-lactide percentage is low.

Abstract: A polylactide resin composition that is used in combination with a specific nucleating agent, the composition being excellent in crystallinity degree and excellent in dispersibility between components and thus also is excellent in transparency. Accordingly, it is possible to maintain the properties inherent in the polylactide resin while having excellent processability.

Abstract: Provided is a method for preparing a polylactic acid polymer that has a desired high molecular weight by performing a ring-opening polymerization reaction of lactide in the presence of a SnHPO3 catalyst to prepare the polylactic acid polymer. The method exhibits excellent activity without decomposing the SnHPO3 catalyst even when the polymerization reaction proceeds at high temperature.

Abstract: Provided is a polylactide resin composition that is used in combination with a specific nucleating agent, wherein the composition is excellent in crystallization half-life and crystallinity degree, and thus can maintain the properties inherent in the polylactide resin while having excellent processability.

Abstract: Provided is a polylactide resin composition prepared by combining specific nucleating agents and heat-treating them, and is characterized by having an excellent crystallinity degree. The polylactide resin composition comprises a polylactide resin, a first nucleating agent, and a second nucleating agent heat-treated at 25 to 120° C. for 1 to 30 minutes, wherein the first nucleating agent is uracil or orotic acid, and the second nucleating agent is a compound containing a lactide oligomer structure.

Abstract: A method for preparing an acrylonitrile dimer according to the present disclosure makes it is possible to efficiently recover an acrylonitrile dimerization catalyst while reducing the process load.

Abstract: According to the present disclosure, there is provided a preparation method of an acrylonitrile dimer capable of obtaining an acrylonitrile dimer with high purity and enhancing process efficiency and economic feasibility by easily recovering the catalyst used in the reaction.

Abstract: Provided is a method for analyzing the content of D-lactic repeating units (D content) in polylactic acid that has a feature that the D content in polylactic acid can be quickly and accurately analyzed by using NMR data of polylactic acid and hypothetical polylactic acid without special chemical treatment for polylactic acid.

Abstract: A method for preparing an acrylonitrile dimer according to the present disclosure makes it is possible to efficiently recover an acrylonitrile dimerization catalyst while reducing the process load.

Abstract: The present disclosure relates to a method for preparing acrylonitrile dimer.

Abstract: The present invention relates to a method of producing an acrylonitrile dimer, the method including: feeding an acrylonitrile monomer, a nonpolar solvent, an alcohol solvent, and a phosphorus-based catalyst to a dimerization reactor to perform a dimerization reaction and reaction product to a distillation column; feeding the acrylonitrile monomer, the nonpolar solvent, and the alcohol solvent from the distillation column to the dimerization reactor; feeding an acrylonitrile dimer and the phosphorus-based catalyst from the distillation column to an extraction device; oxidizing the phosphorus-based catalyst by feeding water including an acid component to the extraction device to inactivate the phosphorus-based catalyst; and separating the inactivated phosphorus-based catalyst and the acrylonitrile dimer.

Abstract: Provided is a method of preparing an acrylonitrile dimer including: supplying an acrylonitrile monomer, a phosphorus-based catalyst, and an alcohol solvent to a reactor to perform a dimerization reaction to produce dimerized reactants (S10); cooling the dimerized reactants to crystallize the phosphorus-based catalyst (S20); separating the crystallized phosphorus-based catalyst (S30); and supplying the dimerized reactants from which the phosphorus-based catalyst is separated to a distillation column to separate the acrylonitrile dimer (S40).

Abstract: Provided is a method of preparing an acrylonitrile dimer, the method including: supplying an acrylonitrile monomer, a phosphorus-based catalyst, an alcohol solvent, and an ionic liquid to a reactor to perform a dimerization reaction to prepare a single-phase dimerization reaction product (S10); supplying a reactor discharge stream including the dimerization reaction product to a first distillation column, separating the alcohol solvent and an unreacted acrylonitrile monomer from an upper discharge stream, and supplying a lower discharge stream including an acrylonitrile dimer, the ionic liquid, and the phosphorus-based catalyst to a second distillation column (S20); and separating an upper discharge stream including the acrylonitrile dimer and separating a lower discharge stream including the ionic liquid and the phosphorus-based catalyst, from the second distillation column (S30).

Abstract: The present disclosure relates to an acrylic adhesive composition exhibiting excellent lap shear strength and adhesive strength by including an adhesion enhancer of a specific component.

Abstract: A two-component adhesive composition includes: (i) a first part of a (meth)acrylate-based monomer mixture including components (a1) to (a3) below: (a1) an alkyl (meth)acrylate compound, and any one or more of a (meth)acrylate compound having an alkoxysilyl group, and a (meth)acrylate compound having an unsaturated functional group except for an acryloyl group, (a2) 50 to 100 parts by weight of an adhesive reinforcing agent relative to the 100 parts by weight of the (meth)acrylate-based monomer mixture, and (a3) 1 to 10 parts by weight of a filler relative to the 100 parts by weight of the (meth)acrylate-based monomer mixture; and (ii) a second part including components (b1) and (b2) below with a weight ratio of 1:1 to 20:1, where (b1) 100 parts by weight of an epoxy resin, and (b2) 50 to 150 parts by weight of an initiator with respect to (b1).

Abstract: In the present invention, there is provided an adhesive composition which comprises carbon nanotubes and thus, exhibits high adhesive strength due to excellent lap shear strength.