Flame retardant acrylic/PLA copolymer
AssigneeInternational Business Machines Corporation
InventorsDylan J. Boday, Joseph Kuczynski, Timothy C. Mauldin
Life of this patent
Estimating the term…
Abstract
A flame retardant acrylic/polylactic acid (PLA) copolymer is synthesized which contains a FR-PMMA block that includes either a poly(MMAP) block or a poly(MMA-co-MMAP) block, wherein MMA is methyl methacrylate and MMAP is a MMA-like monomer that is functionalized with a phosphorus-containing moiety. In some embodiments, the flame retardant acrylic/PLA copolymer is a diblock copolymer containing a PLA block and a FR-PMMA block. In other embodiments, the flame retardant acrylic/PLA copolymer is a triblock-graft copolymer containing a PLA block, a PMMA block and a FR-PMMA block.
Claims20
A flame retardant acrylic/polylactic acid (PLA) copolymer, comprising:
- a diblock copolymer containing a PLA block and a poly(MMA-co-MMAP) block, wherein MMA is methyl methacrylate and MMAP is a MMAP monomer represented by the following formula:
- wherein FR is a phosphorus-containing moiety.
A flame retardant acrylic/polylactic acid (PLA) copolymer, comprising:
- a diblock copolymer containing a PLA block and a poly(MMAP) block, wherein MMAP is a MMAP monomer represented by the following formula:
- wherein FR is a phosphorus-containing moiety, wherein the diblock copolymer is synthesized by a method comprising the steps of:
- reacting 2-hydroxyethyl 2-bromoisobutyrate (HEBIB) and lactide in the presence of tin(II) 2-ethylhexanoate (Sn(Oct)2) via ring-opening polymerization (ROP) to prepare a PLA-based polymer;
- reacting the PLA-based polymer and the MMAP monomer in the presence of CuBr and N,N,N′,N′,N″-pentamethyldiethylenetriamine (PMDETA) via atom transfer radical polymerization (ATRP) to prepare the diblock copolymer containing the PLA block and the poly(MMAP) block.
A flame retardant acrylic/polylactic acid (PLA) copolymer, comprising:
- a triblock-graft copolymer containing PLA grafted outer blocks, linear PMMA outer blocks, and either a linear poly(MMAP) inner block or a linear poly(MMA-co-MMAP) inner block, wherein the linear PMMA outer blocks and either the linear poly(MMAP) inner block or the linear poly(MMA-co-MMAP) inner block define the backbone of the triblock-graft copolymer, wherein the PLA grafted outer blocks are grafted to the linear PMMA outer blocks, wherein MMA is methyl methacrylate and MMAP is a MMAP monomer represented by the following formula:
- wherein FR is a phosphorus-containing moiety.
A flame retardant acrylic/polylactic acid (PLA) copolymer, comprising:
- a triblock-graft copolymer containing PLA grafted outer blocks, a linear PMMA inner block, linear PMMA outer blocks, and either poly(MMAP) grafted inner blocks or poly(MMA-co-MMAP) grafted inner blocks, wherein the linear PMMA blocks define the backbone of the triblock-graft copolymer, and wherein the PLA grafted outer blocks are grafted to the linear PMMA outer blocks and either the poly(MMAP) grafted inner blocks or the poly(MMA-co-MMAP) grafted inner blocks are grafted to the linear PMMA inner block, wherein MMA is methyl methacrylate and MMAP is a MMAP monomer represented by the following formula:
- wherein FR is a phosphorus-containing moiety.
Dependencies are inferred from the claim text.