Bio-based block polymers derived from lignin and fatty acids
AssigneeUniversity of Delaware
InventorsAngela L. HOLMBERG, Joseph F. Stanzione, Richard Wool, Thomas H. Epps, III
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Abstract
The present invention pertains to bio-based block polymers synthesized from functionalized lignin-based molecules (A-monomer) and functionalized fatty acids or fatty alcohols (B-monomer) derived from plant or animal oils, waxes or fats. The block polymers can be synthesized via numerous polymerization techniques, such as reversible addition-fragmentation chain transfer (RAFT). Most importantly, this class of bio-based block polymers shows promise as providing sustainable yet scalable and tunable thermoplastic elastomers and pressure-sensitive adhesives, among other applications.
Claims23
A block polymer comprising at least one A-block and at least one B-block, wherein the A-block contains a polymerized lignin-based monomer or polymerized combination of lignin-based monomers and the B-block contains a polymerized fatty acid-based monomer, polymerized fatty alcohol-based monomer or a polymerized combination of fatty acid-based monomer(s) or fatty alcohol-based monomer(s).
A macroinitiator useful for the synthesis of a block polymer, wherein the macroinitiator contains a polymerized lignin-based monomer or polymerized combination of lignin-based monomers and contains or has been prepared using at least one thiocarbonylthio compound, reversible addition-fragmentation chain-transfer agent, or reactive moiety that can be employed in the synthesis of the block polymer.
A macroinitiator useful in the synthesis of a block polymer, wherein the macroinitiator contains a polymerized fatty acid-based monomer, a polymerized fatty alcohol-based monomer or a polymerized combination of fatty acid-based monomer(s) and/or fatty alcohol-based monomer(s) derived from renewable resources and contains or has been prepared using at least one thiocarbonylthio compound or reversible addition-fragmentation chain-transfer agent.
Dependencies are inferred from the claim text.