Lg Chem, Ltd

Wan Kyu Oh

Seung Young Park

Jeong Heon Ahn

Sung Joon Oh

Gyeong Shin Choi

Heung Yeal Choi

Hyun Chul Jung

Young Shil Do

Jeong Hun Cho

Jeongkyu Lee

Sae Hume Park

Ji Ha Kim

Yu Jin An

Won Seok Kim

Dongmin Kim

Won Hee Woo

Wonseok Kim

Kyeong Hwan Han

Hyunchul Jung

Jun Ho Yoon

Yujin An

Si Jung Park

Yeonji Choe

Minchang Sung

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.

Method of producing acrylonitrile dimer

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).

Method for preparing acrylonitrile dimer

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 (S); cooling the dimerized reactants to crystallize the phosphorus-based catalyst (S); separating the crystallized phosphorus-based catalyst (S); and supplying the dimerized reactants from which the phosphorus-based catalyst is separated to a distillation column to separate the acrylonitrile dimer (S).

Method of preparing acrylonitrile dimer

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.

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.

Two part adhesive composition

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).

Two-component adhesive composition

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.

Adhesive composition

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Daejeon, South Korea

Wan Kyu Oh