Study on the Synthesis and Characters of Waterborne Polyester Resin

Yi  Chen; Guang Sheng Zeng; Wen Yong Liu; Yu Gang Huang

doi:10.4028/www.scientific.net/AMR.430-432.92

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Study on the Synthesis and Characters of Waterborne Polyester Resin
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 430-432Study on the Synthesis and Characters of...

Study on the Synthesis and Characters of Waterborne Polyester Resin

Abstract:

The waterborne polyester resin was synthesized by esterification between different dibasic acids and diatomic alcohols, while the self-emulsifying groups were introduced to the end of the molecular chain. The influences of the kinds and mass of reactants on the characters of waterborne polyester and polyurethanes film were researched. The results showed that with the increase of blocking agent TMA or HHPA as blocking agent to introduce self-emulsifying group, in waterborne polyester resin, the acid value and molecular weight rise obviously, Mn/Mw rises slightly, the storage stability becomes better, the glass-transition temperature and temperature at the biggest speed of losing weight both become higher. When the mass of TMA and HHPA is 6%wt of whole acids and alcohols, the polyester with appropriate acid value, molecular weight and saving stability could be prepared. The polyurethane film, made by waterborne polyester synthesized through such formula: acids: alcohols = 1, in acids, PA: IPA: AA =1:5:1.5; in alcohols, NPG: BEPG =1/2 (all mass ratio), owns good mechanical characters and stability.