Polyplus Co., Ltd.

Young Chow Chemical Co., Ltd.

Dae-up Ahn

Seung-Yeop Kwak

A hyperbranched polyetherketone and a heat-resistant blend of polyvinylchloride with the same. The polyethereketone is synthesized by self-polycondensation of 3,5-bis&lsqb;4-&lsqb;(2,3,4,5,6-pentafluorophenyl)carbonyl&rsqb;phenoxy&rsqb;-4-hydroxbenzophenone or 3,5-difluoro-4-hydroxybenzophenone, and then substituting 50 to 80 mole % of fluorine atoms present in the side chains and ends of the PEK molecule by polar groups. In addition, a blend of polyvinylchloride can be manufactured using the hyperbranched polyetherketone by a melt blending technique applicable for industrial purpose at a temperature of 180 to 120&deg; C., and thus the blend of polyvinylchloride with the polyetherekentone can be applied to high temperature end-use products such as hot water pipes.

Dendritic polyetherketone and heat-resistant blend of PVC with the same

A hyperbranched polyetherketone and a heat-resistant blend of polyvinylchloride with the same. The polyetherketone is synthesized by self-polycondensation of 3,5-bis&lsqb;4-&lsqb;(2,3,4,5,6-pentafluorophenyl)carbonyl&rsqb;phenoxy&rsqb;-4-hydroxybenzophenone or 3,5-difluoro-4-hydroxybenzophenone, and then substituting 50 to 80 mole % of fluorine atoms present in the side chains and ends of the PEK molecule by polar groups. In addition, a blend of polyvinylchloride can be manufactured using the hyperbranched polyetherketone by a melt blending technique applicable for industrial purpose at a temperature of 180 to 120&deg; C., and thus the blend of polyvinylchloride with the polyetherketone can be applied to high temperature end-use products such as hot water pipes.

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Seoul, South Korea

Dae-up Ahn