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AssigneeInternational Business Machines Corporation
InventorsDylan J. Boday, Timothy C. Mauldin
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Flame-retardant polylactic acid-backbone graft and bottlebrush copolymers are synthesized by polymerizing a lactide-functionalized phosphorus-containing macromonomer using ring-opening polymerization (ROP). In some embodiments of the present invention, the macromonomer is a lactide-functionalized phosphorus-containing polymer that may be synthesized by, for example, polymerizing a phosphorus-containing monomer capable of undergoing radical polymerization (e.g., styrenic, vinylic, acrylic, etc.) using a brominated lactide initiator via atom transfer radical polymerization (ATRP). The brominated lactide initiator may be 3-bromo-3,6-dimethyl-1,4-dioxane-2,5-dione prepared by, for example, reacting lactide with N-bromosuccinimide in the presence of benzoyl peroxide.
A flame-retardant polylactic acid-backbone graft copolymer represented by the following formula:
A flame-retardant polylactic acid-backbone bottlebrush copolymer represented by the following formula:
A method for synthesizing a flame-retardant polylactic acid-backbone bottlebrush or graft copolymer, comprising:
Dependencies are inferred from the claim text.