Poly (3-hydroxy acid) polymers from long chain epoxides and their use in connection with hot melt adhesives

A macromolecule comprising the ring-opening polymerization product of a beta-lactone monomer of formula I: # imgabs 0 # and having the structure of formula IA: # imgabs 1 # wherein R1 is an alkyl group having at least 8 carbon atoms. The macromolecules may be hydroxyl-terminated and may be copolymerized with other beta-lactone monomers having different substituents, and/or with higher lactone monomers. The macromolecules may be used as reactants to form alkoxysilane-terminated polymers, polyurethanes, or (co) polyesters, or may be used as elastomeric middle blocks in triblock copolymers having hard end blocks, such as polylactic acid. Such triblock systems exhibit two discrete regions having similar properties to styrene block copolymers and are thus suitable for use as hot melt or pressure sensitive adhesives. In some embodiments, such triblock polymers may be entirely biologically derived and compostable. 一种大分子，其包括式I的β-内酯单体的开环聚合产物：#imgabs0#并且具有式IA的结构：#imgabs1#其中R1是具有至少8个碳原子的烷基。大分子可以是羟基封端的，并且可以与具有不同取代基团的其它β-