THERMALLY EXPANDABLE MICROSPHERES PREPARED FROM BIO-BASED MONOMERS
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United States of America Patent
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Nov 5, 2020
app pub date -
Nov 20, 2018
filing date -
Nov 21, 2017
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Abstract
The present invention relates to thermally expandable microspheres at least partially prepared from bio-based monomers and to a process of their manufacture. The microspheres comprise a thermoplastic polymer shell encapsulating a blowing agent, wherein the thermoplastic polymer shell comprises a copolymer of an itaconate dialkylester and at least one aliphatic or aromatic mono-ethylenically unsaturated comonomer, wherein the itaconate dialkylester is according to formula (1):
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