BRANCHED POLYMERS
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United States of America
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Issued Date -
Jan 6, 2022
app pub date -
Oct 31, 2019
filing date -
Oct 31, 2019
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Abstract
Responsive or degradable branched polymers may be prepared by the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The multivinyl monomer may comprise a cleavable group, for example an ester, or a multiplicity of such groups, between two vinyl groups. Said monomer may be a macromonomer containing multiple cleavage sites.
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