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Preparation of Waterborne Polyurethanes Containing Polycarbonate Component and Their Applications to the Impregnation Finishing for Artificial Leathers  

Lee, Kyoung-Woo (Digital Dyeing Technology Team, Korea Institute of Industrial Technology)
Ko, Jae-Hoon (Digital Dyeing Technology Team, Korea Institute of Industrial Technology)
Shim, Jae-Yun (Digital Dyeing Technology Team, Korea Institute of Industrial Technology)
Kim, Young-Ho (Department of Organic Materials and Fiber Engineering, Soongsil University)
Publication Information
Polymer(Korea) / v.33, no.2, 2009 , pp. 175-182 More about this Journal
Abstract
Waterborne polyurethanes (WPUs) based on isophorone diisocyanate and mixed polyols of poly(tetramethylene glycol) (PTMG)/polycarbonate diol (PCD) were synthesized. The variation of mechanical and dyeing properties and alkali resistance of the WPU films were analyzed according to the polycarbonate (PC) content. The tensile strength of the films increased and the elongation at break decreased with the PC content in the WPU film. The incorporation of PC component in the WPU film did not affect the alkaline hydrolysis behavior. The synthesized WPU solutions were used as impregnating resins for the production of PET artificial leathers. The prepared WPU resins showed the good color fastness to washing, rubbing, and light of the artificial leather fabrics. The improvement of the properties became greater with the PC content in the WPU resin.
Keywords
waterborne polyurethane; polycarbonate diol; impregnation; artificial leather; color fastness;
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