Crystalline Characters of Modified Hyperbranched Polyester

Abstract

Abstract: To obtain a new kind of resin for practical UVcurable powder coating systems, hyperbranched polyester, Boltorn^TM H₂₀, was modified with octadecyLIsocyanate (or palmitoyl chloride) and acryloyl chloride, thus resulting in an UVcurable resins with crystalline molecular shell and amorphous interior. The high melting point( T_m) can be resulted largely by the crystalline area of the crystallizable moieties. The degree of crystallinity is higher with more crystallizable moieties. As a result, T_m of the resin modified with octadecyLIsocyanate is higher than that of one modified with palmitoyl chloride. The hyperbranched polyester Boltorn^TM H₂₀ modified with octadecyLIsocyanate maybe used for powder coating systems.

Key words: Hyperbranched polyester, Powder coating, Crystallinity

CLC Number:

O631

TrendMD:

KOU Hui-Guang, ZHU Sheng-Wu, SHI Wen-Fang . Crystalline Characters of Modified Hyperbranched Polyester[J]. Chem. J. Chinese Universities, 2001, 22(8): 1410.

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Crystalline Characters of Modified Hyperbranched Polyester

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