Abstract: Provided is a composition comprising (a) one or more polyisocyanate, wherein said polyisocyanate has the structure of formula I: A-NCO??I and (b) one or more compound having the structure of formula II: A-L-Q-G??II wherein A in structure II is identical to A in structure I, L is a linking group formed by a reaction of an isocyanate group with an isocyanate-reactive group, Q is an organic group, and G is an anionic group, and wherein the ratio of the sum of the moles of isocyanate groups plus the moles of said L groups to the moles of said Q groups is 3:1 to 10:1. Also provided is an emulsion in which the particles comprise such a composition and further comprise (c) one or more water-insoluble compound that is different from said polyisocyanate (a).

Abstract: Provided is a composition comprising one or more compound having the structure of formula II: wherein A is a residue of a polyisocyanate, L is a linking group formed by a reaction of an isocyanate group with an isocyanate-reactive group, n is 5 to 25, m is 0 to 100, and Z is methyl or ethyl or propyl, and wherein the ratio of the sum of the moles of isocyanate groups plus the moles of said L groups to the moles of said Z groups is 2:1 to 30:1.

Abstract: Provided is a composition comprising (a1) one or more compound that is a trimer of a diisocyanate that has structure A1-NCO; (b1) one or more compound having the structure A1-L1-(CH2CH2O)n—Z; (a2) one or more compound that is a trimer of a diisocyanate that has structure A2-NCO; and (b2) one or more compound having the structure A2-L2-Q-G; wherein A1 in structure II-1 is identical to A1 in structure I-1, L1 is a linking group formed by a reaction of an isocyanate group with an isocyanate-reactive group, n is 5 to 25, Z is an alkyl group, A2 in structure II-2 is identical to A2 in structure I-2, L2 is a linking group formed by a reaction of an isocyanate group with an isocyanate-reactive group, Q is an organic group, G is an anionic group, A1 and A2 may be identical or different, wherein wa1+wa2 is 0% to 90%, wherein wa1 is the weight percent of said compound (a1), based on the total solids weight of said composition, wherein wa2 is the weight percent of said compound (a2), based on the total solids weight of

Abstract: Provided are compositions comprising a collection of coated particles, wherein the coated particles comprises an active ingredient dispersed in an resin matrix; and a coating comprising at least one hydrophobic compound. Also provided are methods for preparing compositions comprising: (a) blending an active ingredient (for example, 1-MCP complex powder) with resin at the temperature slightly over the melting point of the resin; (b) dispersing the blend into an oil medium containing hydrophobic particles by shearing and obtain an oil dispersion; and (c) consolidating the resin particles by cooling. Thus, the active ingredient (for example, 1-MCP complex powder) is imbedded in the resin matrix spheres, and the hydrophobic particles, which also serve as Pickering emulsifier to stabilize the matrix spheres, form a coating layer around the matrix spheres to provide protection against water. Thus, the sphere is composed of the “Pickering” particle and resin matrix, in which the active ingredient is imbedded.

Abstract: Compositions for delivering an active ingredient include particles comprising an active ingredient (for example, 1-MCP complex powder) imbedded in a resin matrix, the particles being suspended in an oil medium. Methods for preparing such compositions include blending an active ingredient with a resin at a temperature higher than the melting point of the resin to provide a blend; dispersing the blend into an oil medium at a temperature higher than the melting point of the resin to provide a dispersion comprising dispersed particles in the oil medium; and consolidating the dispersed particles to provide consolidated particles comprising a solid matrix of the resin impregnated with the active ingredient. Methods of using such compositions include mixing the compositions with an aqueous medium to provide an emulsion or slurry and either contacting plants or plant parts with the emulsion or placing the emulsion near plants or plant parts.

Abstract: A high solid polyester polyol/silica nanocomposite resin with low viscosity is synthesized by an in situ polymerization method, namely conducting condensation polymerization of polyol/diacid monomer with a molar ratio of 1.1˜1.5 in the presence of colloidal silica nanoparticles with a diameter of 10˜150 nm. The resulted nanocomposite resins has a solid content of >95%, molecular weight of 1000˜5000 g/mol and hydroxyl value of 80-200 mg KOH/g, and a viscosity in the range of 800-2000 mPa.s. The viscosities are especially lower than those obtained by a blending method. The nanosilica content in the nanocomposite resin is 1˜15% (based on the total solid content of nanocomposite resin). The high solid polyester polyol/silica nanocomposite resin was curable with isocyanate or melamine to prepare high solid transparent nanocomposite coatings with obviously improved abrasion and scratch resistance, hardness, weatherability etc.

Abstract: A transceiver system and method in an OFDM communication system which enables exact symbol synchronization acquisition and improves performance for frequency offset and channel estimation. In the apparatus, a guard interval filling unit copies data at a predetermined interval in an input data row inputted to be transmitted, and fills in the copied data in the preset guard interval in the input data row. A selection unit selectively receives an output data row outputted from the guard interval filling means and unique words having a constant amplitude and a non-periodic auto-correlation characteristic, and outputs the OFDM symbol in which the unique words are inserted in the output data row.

Abstract: A high solid polyester polyol/silica nanocomposite resin with low viscosity is synthesized by an in situ polymerization method, namely conducting condensation polymerization of polyol/diacid monomer with a molar ratio of 1.1˜1.5 in the presence of colloidal silica nanoparticles with a diameter of 10˜150 nm. The resulted nanocomposite resins has a solid content of >95%, molecular weight of 1000˜5000 g/mol and hydroxyl value of 80-200 mg KOH/g, and a viscosity in the range of 800-2000 mPa.s. The viscosities are especially lower than those obtained by a blending method. The nanosilica content in the nanocomposite resin is 1˜15% (based on the total solid content of nanocomposite resin). The high solid polyester polyol/silica nanocomposite resin was curable with isocyanate or melamine to prepare high solid transparent nanocomposite coatings with obviously improved abrasion and scratch resistance, hardness, weatherability etc.

Abstract: A transceiver system and method in an OFDM communication system which enables exact symbol synchronization acquisition and improves performance for frequency offset and channel estimation. In the apparatus, a guard interval filling unit copies data at a predetermined interval in an input data row inputted to be transmitted, and fills in the copied data in the preset guard interval in the input data row. A selection unit selectively receives an output data row outputted from the guard interval filling means and unique words having a constant amplitude and a non-periodic auto-correlation characteristic, and outputs the OFDM symbol in which the unique words are inserted in the output data row.