Flame retardant block copolymers from renewable feeds
AssigneeInternational Business Machines Corporation
InventorsDylan J. Boday, Joseph Kuczynski, Timothy C. Mauldin
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Abstract
A flame retardant block copolymer is prepared from renewable content. In an exemplary synthetic method, a bio-derived flame retardant block copolymer is prepared by a ring opening polymerization of a biobased cyclic ester and a phosphorus-containing polymer. In some embodiments, the biobased cyclic ester is lactide. In some embodiments, the phosphorus-containing polymer is a hydroxyl-telechelic flame retardant biopolymer prepared by a polycondensation reaction of a biobased diol (e.g., isosorbide) and a phosphorus-containing monomer (e.g., phenylphosphonic dichloride). In other embodiments, the phosphorus-containing polymer is synthesized from a dioxaphospholane monomer.
Claims13
A flame retardant block copolymer, comprising:
- a ring opening polymerization reaction product of a biobased cyclic ester and a phosphorus-containing polymer.
A flame retardant block copolymer, comprising:
- a ring opening polymerization reaction product of a biobased cyclic ester and a phosphorus-containing polymer, wherein the biobased cyclic ester is selected from a group consisting of lactide, glycolide, and combinations thereof, wherein the phosphorus-containing polymer comprises a hydroxyl-telechelic flame retardant biopolymer prepared by a polycondensation reaction of a biobased diol and a phosphorus-containing monomer, wherein the biobased diol is selected from a group consisting of 1,4:3,6-dianhydrohexitols (DAHs), 2,5-bis(hydroxymethyl)furan, ethylene glycol, propylene glycol, 1,3-propanediol, glycerol, 2,3-butanediol, and combinations thereof, and wherein the phosphorus-containing monomer is selected from a group consisting of phenylphosphonic dichloride, ethylphosphonic dichloride, methylphosphonic dichloride, methylenebis(phosphonic dichloride), phenyl dichlorophosphate (PDCP), ethyl dichlorophosphate, methyl dichlorophosphate, and combinations thereof.
A flame retardant block copolymer, comprising:
- a ring opening polymerization reaction product of a biobased cyclic ester and a phosphorus-containing polymer, wherein the biobased cyclic ester is selected from a group consisting of lactide, glycolide, and combinations thereof, wherein the phosphorus-containing polymer comprises a polyphosphoester synthesized from a ring opening polymerization of a dioxaphospholane initiated from a diol, wherein the dioxaphospholane is selected from a group consisting of 2-ethoxy-2-oxy-1,3,2-dioxaphospholane, 2-methyl-2-oxy-1,3,2-dioxaphospholane, 2-ethoxy-4-methyl-2-oxy-1,3,2-dioxaphospholane, and combinations thereof.
Dependencies are inferred from the claim text.