ETHYLENE OXIDE-CONTAINING COPOLYMERS AND METHODS THEREOF

摘要

The present invention is directed at a binder for a battery electrode comprising an ethylene oxide-containing copolymer including a first monomer of ethylene oxide (EO) and at least one additional monomer selected from an alkylene-oxide that is different from the first monomer of EO, an alkyl glycidyl ether, or a combination thereof; wherein the ethylene oxide-containing copolymer has a weight average molecular weight less than about 200,000 g/mole (e.g., from about 10,000 to about 100,000), the molar fraction of the first monomer of EO (XEO) in the ethylene oxide-containing copolymer is greater than 0.80 (e.g., from about 0.80 to about 0.995), and the ethylene oxide-containing copolymer has a peak melting temperature (Tp), in ° C., for a selected XEO in the range of about 0.80 to about 0.995, which is below a maximum value of Tpmax, at the selected XEO, which is calculated using the equation Tpmax=(60−150 (1−XEO)).

主权项

1. A process for polymerizing an ethylene oxide-containing copolymer, comprising contacting a first monomer of ethylene oxide and at least one additional monomer with a catalyst in the presence of a hydrocarbon diluent; at a reaction temperature less than the peak melting temperature of the copolymer for reacting the monomers to polymerize the copolymer;
wherein the at least one additional monomer is an alkylene-oxide that is different from the first monomer of ethylene oxide, an alkyl glycidyl ether, an allyl glycidyl ether, or a combination thereof.