Lg Chem, Ltd

Seung Hun Yang

Jung Su Han

Jung Eun Kim

Seung Uk Yeu

Byoung Yun Kim

Ho Yeul Choi

Ji Hyun Kim

Won Tae Joe

Sungjong Seo

Keu Yeun Park

Seungmo Lee

Hyun Woo Kim

Chang Sun Han

Jungeun Yeo

Won Sang Kwon

Yong Su Park

Kum Hyoung Lee

Yoon Jung Kim

Kumhyoung Lee

Hye Soo Han

Hyo Min Kim

Jungeun Woo

Yoontae Hwang

Yu Jin Cha

Hyunju Cho

Wonsang Kwon

YoonJung Kim

An aqueous acrylic pressure-sensitive adhesive composition, a method of preparing the same and a pressure-sensitive adhesive sheet including the same are disclosed herein. In some embodiments, an aqueous acrylic pressure-sensitive adhesive composition includes a copolymer including 20 to 99% by weight of an alkyl (meth)acrylate monomer, greater than 0 and 3% or less by weight of an acrylate monomer including a hydroxy group and greater than 0 and 3% or less by weight of an unsaturated carboxylic acid, and an anionic surfactant, wherein the anionic surfactant is present in an amount of 0.01 to 5 parts by weight based on 100 parts by weight of the copolymer, and wherein the copolymer has an average particle diameter of 500 nm or less and satisfies Equation 1.

Aqueous acrylic pressure-sensitive adhesive composition, method of preparing the same and pressure-sensitive adhesive sheet including the same

The present disclosure relates to a preparation method of an acrylate-based pressure-sensitive adhesive composition. According to the present disclosure, it is possible to provide a preparation method of an acrylate-based pressure-sensitive adhesive composition which exhibits high ball tack while suppressing the generation of bubbles due to its excellent antifoaming ability.

Preparation method of acrylate-based pressure-sensitive adhesive composition

Provided is an acrylic emulsion pressure-sensitive adhesive composition, and more particularly, an acrylic emulsion pressure-sensitive adhesive composition which may realize excellent adhesive properties, and may maintain excellent adhesive strength even after aging, in particular, when applied to a curved surface of an adherend, and thus may be usefully applied to labels for bottles, etc.

Acrylic emulsion pressure-sensitive adhesive composition

A gravure coater test apparatus includes a gravure roll and a backup roll which are circumscribed to each other, a motor which drives the gravure roll partially submerged in a water-based pressure-sensitive adhesive for coating, a controller which adjusts the rotational speed of the motor, a doctor blade which is selected from a plurality of types to scrape the water-based pressure-sensitive adhesive from the surface of the gravure roll being rotated, and an infrared analyzer which allows at least one of the type of the water-based pressure-sensitive adhesive corresponding to the selected doctor blade, the uniformity of the coating surface, and the amount of the coated water-based pressure-sensitive adhesive to be confirmed.

Gravure coater test apparatus and gravure coater

A method for preparing an aqueous acrylic pressure-sensitive adhesive for clothing is provided, which maintains aging peel strength even when stored at a high temperature for a long time and has greatly improved residue properties when the adhesive is removed from clothing fabrics, and the like. An aqueous acrylic pressure-sensitive adhesive for clothing including the composition prepared as above is also provided.

Method for preparing aqueous pressure-sensitive adhesive composition for clothing

A process for preparing an acrylic emulsion resin is provided by introducing specific monomers at a certain time during an emulsion polymerization process, dispersion stability and adhesion properties of the acrylic emulsion resin are improved, thereby providing an aqueous acrylic pressure-sensitive adhesive that not only has excellent initial adhesion but also has low viscosity and improved processability, and high adhesion holding power.

Process for preparing acrylic emulsion resin

The present invention relates to a latex composition for dip-molding and a molded article produced therefrom. More specifically, the above composition can be used to prepare the dip-molded articles having gentle syneresis, no stickiness, and excellent chemical resistance by using monoglyceride.

Latex composition for dip-molding, and molded article prepared from same

Disclosed is a latex composition for dip-molding and a dip-molded article produced therefrom. More specifically, a dip-molded article having slow syneresis, less stickiness and superior tensile strength is produce by dip-molding of a carbonic acid-modified nitrile-based copolymer latex having increased molecular stability due to the combined use of alkenylsuccinate, which is an emulsifier crosslinkable with the latex and having a flexible molecular structure.

Latex composition for dip-forming and dip-formed article produced therefrom

The present invention relates to a latex composition for dip-molding and a molded article produced therefrom. More specifically, the composition not only has gentle syneresis, and excellent tensile strength, elongation and modulus, and excellent durability against perspiration, but also is capable of preparing the dip-molded articles having excellent wearing sensation.

Latex composition for dip molding, and molded product manufactured therefrom

Disclosed is a latex composition for dip-molding and a dip-molded article produced therefrom. More specifically, by using a water-soluble polymer such as poly(N-isopropylacrylamide) or a copolymer thereof in combination with a carbonic acid-modified nitrile-based copolymer latex, the stability of the latex is improved through crosslinking by hydrogen bonding, it is possible to manufacture a molded article which has a slow syneresis and is excellent in workability and does not tear even at a thin thickness due to high tensile strength.

Latex composition for dip molding and molded article manufactured therefrom

Provided is a latex composition for dip forming which includes 100 parts by weight of a nitrile-based hybrid latex including a first latex and a second latex which have different glass transition temperatures, and 2 parts by weight to 8 parts by weight of an ion-conductive polymer having a weight-average molecular weight of 400 to 1,000. The latex composition for dip forming has excellent low-temperature stability and a dip-formed article prepared using the composition has excellent tensile strength and elongation. Since wearing comfort is improved due to a decrease in modulus, the dip-formed article may be suitable for industries requiring such properties.

Latex composition for dip forming and dip-formed article prepared therefrom

Disclosed is a carboxylic acid-modified nitrile-based copolymer latex composition, including 0.1-10 parts by weight of a reactive emulsifier based on 100 parts by weight of a monomer mixture, wherein the monomer mixture includes 40-88 wt % of a conjugated diene-based monomer, 10-50 wt % of an ethylenically unsaturated nitrile monomer and 0.1-10 wt % of an ethylenically unsaturated acid monomer. Also disclosed are a method of preparing the carboxylic acid-modified nitrile-based copolymer latex composition and a latex composition for dip molding including the same. The carboxylic acid-modified nitrile-based copolymer latex composition reduces generation of foam through the use of a reactive emulsifier different from the conventional adsorption/desorption type emulsifier, thereby preventing degradation of the quality of latex caused by foam. In addition, the carboxylic acid-modified nitrile-based copolymer latex composition avoids a need for introducing a defoaming agent for removing foam or maturation process.

Carboxylic acid-modified nitrile-based copolymer latex composition, preparation method thereof, and latex composition for dip molding including the same

Disclosed are a carboxylic acid-modified nitrile copolymer latex for dip molding comprising a combination of a carboxylic acid-modified nitrile copolymer latex and a carboxylic acid-modified styrene copolymer latex, a latex composition for dip molding comprising the same and a molded article prepared therefrom. Molded articles with superior tensile strength are produced by respectively preparing a carboxylic acid-modified nitrile latex having a low glass transition temperature and an average particle diameter of 90 nm or higher, and a carboxylic acid-modified styrene latex having a glass transition temperature of 80&#xb0; C. or higher and an average particle diameter less than 90 nm and then mixing the two latexes.

Carboxylic acid modified-nitrile based copolymer latex for dip-forming, latex composition for dip-forming comprising the same, and product thereof

Disclosed is a latex composition for dip molding comprising a carboxylic acid-modified nitrile copolymer latex and starch and an article produced therefrom. Advantageously, a dip-molded article having low syneresis, less stickiness and superior tensile strength can be obtained by using the carboxylic acid-modified nitrile latex in conjunction with starch.

Latex composition for dip molding and dip-molded article produced therefrom

Disclosed are a carboxylic acid modified-nitrile based copolymer composition and a dip-formed article produced therefrom. More specifically, disclosed are a copolymer composition comprising a carboxylic acid modified-nitrile copolymer latex having a glass transition temperature of a &#x2212;60 to &#x2212;10&#xb0; C. and a carboxylic acid modified-styrene copolymer latex having a glass transition temperature of 30 to 110&#xb0; C., and a dip-formed article produced therefrom. Provided are advantageously a carboxylic acid modified-nitrile based copolymer composition enabling production of dip-formed articles having physical properties comparable to conventional articles and greatly improved wearing sensation and doping property, and a dip-formed article produced therefrom.

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Daejeon, South Korea

Seung Hun Yang