摘要:
A dispersion and a method therefor wherein the dispersion has composition A or B, whereinA is a nonaqueous dispersion comprising pigment particles having an average size of less than 0.1 micrometer dispersed in an organic medium, andB is an aqueous dispersion comprising certain classes of inorganic pigment particles having an average size of less than 0.1 micrometer dispersed in an aqueous medium, wherein said classes of inorganic pigment particles are selected from the group consisting of metal oxides and metal salts.The method of the invention comprises the steps of vaporizing a pigment or pigment precursor in the presence of a nonreactive gas stream to provide ultrafine pigment or pigment percursor particles, when pigment precursor particles are present, providing a second gas capable of reacting with said ultrafine pigment precursor particles and reacting said second gas with said ultrafine pigment precursor particles to provide ultrafine pigment particles, transporting said ultrafine pigment particles in said gas stream to a dispersing medium, to provide a dispersion of pigment particles in said medium.
摘要:
A dispersion and a method therefor wherein the dispersion has composition A or B, whereinA is a nonaqueous dispersion comprising pigment particles having an average size of less than 0.1 micrometer dispersed in an organic medium, andB is an aqueous dispersion comprising certain classes of inorganic pigment particles having an average size of less than 0.1 micrometer dispersed in an aqueous medium, wherein said classes of inorganic pigment particles are selected from the group consisting of metal oxides and metal salts.The method of the invention comprises the steps of vaporizing a pigment or pigment precursor in the presence of a nonreactive gas stream to provide ultrafine pigment or pigment precursor particles, when pigment precursor particles are present, providing a second gas capable of reacting with said ultrafine pigment precursor particles and reacting said second gas with said ultrafine pigment precursor particles to provide ultrafine pigment particles, transporting said ultrafine pigment particles in said gas stream to a dispersing medium, to provide a dispersion of pigment particles in said medium.
摘要:
Lithium-ion electrochemical cells are provided that include a positive electrode that includes a lithium metal oxide or a lithium metal phosphate, a negative electrode capable of intercalating or alloying with lithium, and an electrolyte that includes an additive. The additive includes a multifunctional anion that has the formula, X—SO2—Rf′—SO2—Y, wherein X and Y are, independently, either O— or RfSO2N—, Rf is a straight or branched fluoroalkyl moiety having from 1 to 6 carbon atoms, and can, optionally, contain one or more in-chain heteroatoms, wherein Rf′ is a straight or branched chain or cyclic fluoroalkylene having from 1 to 10 carbon atoms and can, optionally, contain one or more in-chain heteroatoms, and wherein both Rf and Rf′ have a maximum of 20% non-fluorine substituents. The provided additives can improve the performance, hydrolytic stability, and thermal stability of the provided electrochemical cells.
摘要:
An electrolyte membrane is formed by an acidic polymer and a low-volatility acid that is fluorinated, substantially free of basic groups, and is either oligomeric or non-polymeric.
摘要:
An antistatic composition comprises (a) at least one ionic salt consisting of a nonpolymeric nitrogen onium cation and a weakly coordinating fluoroorganic anion, the conjugate acid of the anion being a superacid; and (b) at least one thermoplastic polymer. The composition exhibits good antistatic performance over a wide range of humidity levels.
摘要:
A polymerizable composition comprises an alpha-olefin hydrocarbon monomer, an effective amount of an organometallic catalyst of a Group VIII metal, preferably Ni or Pd, and at least one of water and air. Novel catalysts for polymerizing alpha-olefin hydrocarbon monomers provide improved processes and products. Methods of the invention include polymerizing the composition in open air and in the presence of water to provide novel polymers.
摘要:
An energy-sensitive (e.g., thermal, radiation or photosensitive) initiator, curative, and/or catalytic salt that has an anion comprising a tris-(highly fluorinated alkylsulfonyl)methide, tris-(fluorinated arylsulfonyl)methide, bis-(highly fluorinated alkyl)sulfonyl imide, bis-(fluorinated aryl)sulfonyl imide, mixed aryl- and alkylsulfonyl imides and methides and any combinations thereof, has improved solubility in organic solvents, exhibit minimal corrosiveness when coatings and adhesives are prepared using the initiator, curative and/or catalytic salts, generates a highly reactive initiator, curative, and/or catalyst upon activation by energy.
摘要:
A polymerizable composition comprises at least one ring-strained non-conjugated cyclic olefin, a two-part transition metal-containing catalyst wherein said transition metal is selected from the group consisting of Periodic Groups 6 to 10, said catalyst being air and moisture stable and comprises a transition metal-containing catalyst, provided that the oxidation state of the transition metal is in the range of +3 to 0, and as cocatalyst an organosilane comprising at least one group selected from the group consisting of ##STR1## groups.
摘要:
The present invention is an electrolyte membrane comprising an acid and a basic polymer, where the acid is a low-volatile acid that is fluorinated and is either oligomeric or non-polymeric, and where the basic polymer is protonated by the acid and is stable to hydrolysis.
摘要:
Films, such as optical films that comprise a microstructured surface are described. The microstructures comprise the reaction product of a polymerizable resin composition comprising certain polyalkyl nitrogen or phosphorus onium fluoroalkyl sulfonyl salts as an antistatic agent. Also described is a polymerizable resin comprising at least one di(meth)acrylate monomer comprising at least two aromatic rings, a reactive diluent; and the polyalkyl nitrogen or phosphorus onium fluoroalkyl sulfonyl salts as an antistatic agent antistatic agent.