摘要:
A catalyst composition for polymerizing oxiranes is provided that yields high molecular weight poly(oxiranes). The catalyst composition comprises: a hydrophobically modified particulate inorganic oxide; an aluminum alkyl complex; and a compound containing a Lewis basic free electron pair. Polymerization methods and poly(oxirane) polymers are also provided.
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 h 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)).
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)).
摘要:
Processes are disclosed for the manufacture of lactones, e.g., caprolactone, from hydoxy acids, e.g., 6-hydroxycaproic acid. The reaction is conducted over a suitable catalyst in the presence of water.
摘要:
Hydroformylation mediums, and a process for producing same, which are derived from a rhodium complex concentrate, as well as a hydroformylation process for producing aldehydes which employs said concentrate as a source of rhodium for the rhodium complex catalyst of said process.
摘要:
Processes are disclosed for the conversion of propylene to an acrolein derivative by converting propylene to acrolein and converting acrolein to the acrolein derivative. The processes utilize oxygen and recycle propane to the acrolein reactor. Process feeds can comprise, propane, propylene or mixtures thereof. The presence of propane in the propylene-to-acrolein reaction can enhance the efficiency of the processes.
摘要:
Processes are disclosed for preparing [2.2] paracyclophane and derivatives thereof by conducting the Hofmann elimination of p-methylbenzyltrimethylammonium hydroxide, or derivatives thereof, in the presence of an effective amount of oxygen to inhibit the formation of by-product polymers. The oxygen can be introduced, for example, by a purge gas stream containing molecular oxygen. Products produced by the processes are also disclosed.
摘要:
A process for selectively removing alkyl substituted phosphine from an organic liquid containing same and triarylphosphine by treating said liquid with phosphoric acid.
摘要:
Hydroformylation mediums, and a process for producing same, which are derived from a rhodium complex concentrate, as well as a hydroformylation process for producing aldehydes which employs said concentrate as a source of rhodium for the rhodium complex catalyst of said process.