Foamable polyester compositions having low level of unreacted branching agent
This invention relates to a process for preparing foamable branched polyester compositions having increased melt viscosity and melt strength, and a reduced level of unreacted monomeric branching agent. The process involves melt blending (A) a composition containing a polyolefin and branching agent,...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
16.12.1998
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | This invention relates to a process for preparing foamable branched polyester compositions having increased melt viscosity and melt strength, and a reduced level of unreacted monomeric branching agent. The process involves melt blending (A) a composition containing a polyolefin and branching agent, (B) a nucleating agent either in powder form or (B') in the form of a composition containing a polyolefin and nucleating agent, and a polyester. |
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Bibliography: | Application Number: CN19961098389 |