Lg Chem, Ltd

Imgyu Kim

Chang Bum Ko

Young-Min Kim

Dong Jo Ryu

Hyo Min Kim

Disclosed are a cement composition additive with improved compressive strength and workability, including a polycarboxylic acid copolymer and/or a salt thereof, zinc oxide particles, and a predetermined amount of gluconic acid and/or a salt thereof, and a cement composition containing the same.

Cement composition additive containing polycarboxylic acid copolymer, zinc oxide particles and gluconate

Disclosed are an additive of a cement composition including a cross-linked polycarboxylic copolymer and a cement composition including the same. More particularly, an additive of a cement composition including a polycarboxylic copolymer and/or a salt thereof, wherein the polycarboxylic copolymer is a copolymer of a monomer mixture including an alkoxy polyalkylene glycol mono(meth)acrylic acid ester-based monomer, a (meth)acrylic acid-based monomer, and a cross-linking agent containing 5 to 20 alkylene oxide groups and having two or more acrylate groups or vinyl groups, and a cement composition including the same are disclosed. The additive of the cement composition including the polycarboxylic copolymer according to the present invention controls a cross-linked structure and thereby initial sensitivity and retentivity are improved, and, accordingly, a cement composition having superior long-term workability may be formed.

Additive including cross-linked polycarboxylic copolymer and cement composition comprising the same

Disclosed are an additive for cement compositions that includes a polycarboxylic copolymer and a cement composition including the same and, more particularly, an additive for cement compositions that includes a polycarboxylic copolymer and/or a salt thereof, wherein the polycarboxylic copolymer is a copolymer of a monomer mixture including an alkoxy polyalkylene glycol mono(meth)acrylic acid ester-based monomer, a (meth)acrylic acid-based monomer, a (meth)acrylic acid ester-based monomer, and a polyoxyalkylene alkenyl ether sulfate salt and a cement composition including the same.

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Daejeon, South Korea

Imgyu Kim