Patent classifications
C08G64/0258
LEVOGLUCOSAN-BASED FLAME RETARDANT COMPOUNDS
A levoglucosan-based flame retardant compound, a process for forming a flame retardant polymer, and an article of manufacture comprising a material that contains a levoglucosan-based flame retardant polymer are disclosed. The levoglucosan-based flame retardant compound has phosphorus-based flame retardant functional groups. The process for forming the flame retardant polymer includes providing a phosphorus-based flame retardant molecule, providing levoglucosan, chemically reacting the phosphorus-based flame retardant molecule and the levoglucosan derivative to form a levoglucosan-based flame retardant compound, and incorporating the levoglucosan-based flame retardant compound into a polymer to form the levoglucosan-based flame retardant polymer.
FLAME RETARDANT LEVULINIC ACID-BASED COMPOUNDS
A flame retardant levulinic acid-based compound, a process for forming a levulinic acid-based flame retardant polymer, and an article of manufacture comprising a material that contains a flame retardant levulinic acid-based polymer are disclosed. The flame retardant levulinic acid-based compound has variable moieties, which include phenyl-substituted and/or R functionalized flame retardant groups. The process for forming the flame retardant polymer includes forming a phosphorus-based flame retardant molecule, forming a levulinic acid derivative, chemically reacting the phosphorus-based flame retardant molecule and the levulinic acid derivative to form a flame retardant levulinic acid-based compound, and incorporating the levulinic acid-based flame retardant compound into a polymer to form the flame retardant polymer.
METHOD FOR PRODUCING POLYETHER CARBONATE POLYOLS
The invention relates to a method for producing polyether carbonate polyols, (i) one or more alkylene oxide(s) and carbon dioxide being added to one or more H-functional starter substance(s) in the presence of a double metal cyanide catalyst or in the presence of a metal complex catalyst based on the metals zinc and/or cobalt, a reaction mixture containing the polyether carbonate polyol being obtained, characterized in that (ii) at least one component K is added to the obtained reaction mixture containing the polyether carbonate polyol, wherein component K is selected from at least one compound that contains a phosphorus-oxygen bond or a compound of phosphorus that can form one or more PO bonds by reaction with OH-functional compounds.
Antimicrobial cationic polycarbonates
Antimicrobial cationic polymers having one or two cationic polycarbonate chains were prepared by organocatalyzed ring opening polymerization. One antimicrobial cationic polymer has a polymer chain consisting essentially of cationic carbonate repeat units linked to one or two end groups. The end groups can comprise a covalently bound form of biologically active compound such as cholesterol. Other antimicrobial cationic polymers have a random copolycarbonate chain comprising a minor mole fraction of hydrophobic repeat units bearing a covalently bound form of a vitamin E and/or vitamin D2. The cationic polymers exhibit high activity and selectivity against Gram-negative and Gram-positive microbes and fungi.