Branched polymer, method for preparing the same and method for preparing a foam
A branched polymer, a preparation method thereof and a method for preparing a foam are provided. The branched polymer is a transesterification product of a composition, and the composition includes 100 parts by weight of polyethylene terephthalate and 0.5-2.0 parts by weight of polyol. The branched...
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Main Authors | , , , |
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Format | Patent |
Language | English |
Published |
27.10.2020
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Subjects | |
Online Access | Get full text |
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Summary: | A branched polymer, a preparation method thereof and a method for preparing a foam are provided. The branched polymer is a transesterification product of a composition, and the composition includes 100 parts by weight of polyethylene terephthalate and 0.5-2.0 parts by weight of polyol. The branched polymer has an inherent viscosity of from 1.2 dL/g to 1.6 dL/g, a number average molecular weight of from 75,000 g/mol to 90,000 g/mol, a polydispersity index from 3.0 to 6.0, a melt index from 0.8 g/10 min to 7.5 g/10 min, a shear viscosity from 800 Pa·s to 1900 Pa·s, and a melt strength from 30 cN to 80 cN. |
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Bibliography: | Application Number: US201715852952 |