Lg Chem, Ltd

Other

Sang Jin Shin

Jung Eun Kim

Seung Uk Yeu

Yong Seok Jung

Jung Su Han

Won Sang Kwon

Ji Hyun Kim

Seung Whan Oh

Ji Young Lee

Do Young Ha

Provided is an acryl-based copolymer, and more particularly, an acryl-based copolymer including a main monomer-derived repeating unit and a polyfunctional monomer-derived moiety, wherein the main monomer-derived repeating unit includes a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinkable monomer-derived repeating unit, the polyfunctional monomer includes a vinyl group or an allyl group, and the polyfunctional monomer-derived moiety is included in an amount of 0.0005 to 1 part by weight based on 100 parts by weight of the total main monomer-derived repeating unit.

Acrylic copolymer, method for manufacturing same, and acrylic copolymer composition comprising same

The present technology provides a carboxylic acid-modified nitrile-based copolymer latex including a carboxylic acid-modified nitrile-based copolymer including a conjugated diene-based monomer-derived unit, an ethylenic unsaturated nitrile-based monomer-derived unit, and an ethylenic unsaturated acid monomer-derived unit, wherein a pKa is 9.5 to 10.2, and the carboxylic acid-modified nitrile-based copolymer latex satisfies General Formulas 1 and 2.

Carboxylic acid modified-nitrile based copolymer latex

Disclosed is a method of preparing a carboxylic acid modified-nitrile based copolymer latex including: initiating emulsion polymerization of a monomer mixture including a conjugated diene-based monomer, ethylenic unsaturated nitrile-based monomer, ethylenic unsaturated acid monomer, and water-soluble monomer in the presence of water and 0.01 to 0.1 parts by weight of a lipid-soluble initiator based on 100 parts by weight of total of monomer mixture, and at a weight ratio (M/W) of the monomer mixture to water of 1.1 to 1.4 (S10); adding water when the polymerization conversion rate is 30 to 40% at a weight ratio (M/W) of 0.8 to 1.0 (S20); and adding water when the polymerization conversion rate is 60 to 70% at a weight ratio (M/W) of 0.6 to 0.7 (S30), when the polymerization conversion rate is between ≥10% and <60%, 0.1 to 2.0 parts by weight of sodium naphthalene sulfonate formaldehyde condensate based on 100 parts by weight of the total monomer mixture is introduced.

Method for preparing carboxylic acid modified-nitrile based copolymer latex

An acryl-based copolymer composition is provided. The acryl-based copolymer composition includes an acryl-based copolymer, an aggregation inducing agent, and an aggregating agent, wherein the acryl-based copolymer includes a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinkable monomer-derived repeating unit. The aggregation inducing agent includes a siloxane-based monomer-derived repeating unit and an ether-based monomer-derived repeating unit, and the aggregating agent includes a monovalent ionic metal salt.

Acryl-based copolymer composition, method of preparing the same, and acryl-based copolymer blend comprising the same

Provided are a carboxylic acid-modified nitrile-based copolymer latex composition, a preparation method thereof, a latex composition for dip-molding including the same, and an article molded by the same, the carboxylic acid-modified nitrile-based copolymer latex composition including: a carboxylic acid-modified nitrile-based copolymer, wherein the carboxylic acid-modified nitrile-based copolymer includes a 2-hydroxyethyl methacrylate monomer-derived repeating unit in an amount of more than 0.1 wt % to less than 12 wt %, and a coagulum in the carboxylic acid-modified nitrile-based copolymer latex composition has an amount of less than 1 wt %.

Carboxylic acid-modified nitrile-based copolymer latex composition, production method therefor, latex composition containing same for dip molding, and molded product molded therefrom

Provided is a dip-molded article, and more particularly, provided are a dip-molded article including: a layer derived from a latex composition for dip-molding; and a layer derived from a polymer including a repeating unit derived from a diacetylene-based compound, a latex composition for dip-molding, and a preparation method thereof.

Dip-molded article, latex composition for dip-molding and preparation method thereof

An acrylic copolymer is provided. The acrylic copolymer includes: a main monomer-derived repeating unit; and a chain transfer agent-derived part, wherein the main monomer-derived repeating unit includes a (meth)acrylic acid alkyl ester monomer-derived repeating unit, a (meth)acrylic acid alkoxy alkyl ester monomer-derived repeating unit, and a crosslinking monomer-derived repeating unit, the chain transfer agent-derived part is derived from a chain transfer agent having a carbonothioylthio group, and the chain transfer agent-derived part is included in an amount of 0.03 parts by weight to 0.08 parts by weight with respect to 100 parts by weight of the main monomer-derived repeating unit. A method of preparing the same, and an acrylic copolymer composition including the same is also provided.

Acrylic copolymer, method of preparing the same, and acrylic copolymer composition including the same

The present invention defines a container which is provided with a plurality of decorative figures defined by cut lines or perforations disposed in the surfaces of the container. After the container is no longer functioning as a container, the decorative figures disposed in the walls thereof can be either cut or punched from the container walls and used for a variety of purposes.

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Daejeon, South Korea

Sang Jin Shin