Lubrizol Advanced Materials, Inc.

Sk Chemicals Co., Ltd.

Nam Jung Kim

Dong Sik Kim

Jong Ryang Kim

Tae Woong Lee

Young Woo Kim

Myoung Ruoul Lee

Hwa Yong Lee

Disclosed is a transparent multilayer sheet that is excellent in antistatic properties, as well as transparency. The transparent multilayer sheet includes a surface layer comprising a conductive thermoplastic polyurethane or polyurea resin containing ethylene oxide; and a back layer attached to the surface layer and comprising a transparent non-conductive polymer resin. Preferably, the polyurethane or polyurea resin is a polymerization product of (a) a polyether-based polymer containing ethylene oxide and reacting with an isocyanate group; (b) an aromatic or aliphatic diisocyanate compound; and (c) a chain extender C2 to C10 containing a primary hydroxyl group or an amine group, and the transparent non-conductive polymer resin is selected from the group consisting of polyethylene terephthalate, glycol modified polyethylene tereph-thalate, glycol modified polycyclohexaneterephthalate, polymethylmethacrylate, polycarbonate, transparent acrylonitrile-butadiene-styrene (ABS), and mixtures thereof.

Transparent multilayer sheet having electrostatic dissipative properties

The present invention relates to a copolymer polyester resin and a molded product using the same and more specifically to a copolymer polyester resin that contains 10&#x2dc;80 mol % of 1,4-cyclohexane dimethanol, 0.1&#x2dc;30 mol % of a cyclohexane dimethanol compound expressed as HOHC&#x2014;[CH]&#x2014;[CH]&#x2014;CHOH (where m is an integer from 1&#x2dc;10), and ethylene glycol as the remainder so that the sum of the entire diol composition may be 100 mol % based on an aromatic dicarboxylic acid. The copolymer polyester of the present invention enables superior products to be provided that reduce cycle time and enhance product processability during mold processing using a heat-shrinking label by complementing low temperature shrinkage properties that may be exhibited by the polyester resin of the prior art copolymerized with 1,4-cyclohexane dimethanol.

Copolymer polyester resin and molded product using same

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Gyeonggi-do, South Korea

Nam Jung Kim