Abstract:
There is provided a process for preparing a polymerized toner material which comprises silicon (Si) nanoparticles. The process comprises mixing together and allowing to react: a water-based dispersion medium comprising silicon (Si) nanoparticles and at least one conventional dispersant, a polymer resin comprising one type of monomers or more, a coloring agent, and a charge control agent.
Abstract:
The present disclosure relates to a composition, comprising a monomer; a reactive co-stabilizer; a carbon black; a surfactant; and a filler, wherein the composition is used to prepare a polymer/carbon black composite particle by MEP technology along with a method for same. The reactive co-stabilizer as disclosed is methacrylate derivative containing a long alkyl chain R, with R consisting of 6-22 C atoms and being branched or linear, saturated and/or unsaturated such as stearyl methacrylate (SteaMA). The polymer/carbon black composite particle as prepared has an enhanced stability and low VOC as compared to a pure polymer prepared by MEP. Further, the prepared polymer can be used as basic resins in materials for toner applications.
Abstract:
Normal N-(Hydroxymethyl) acrylamide (PNHMAG) and normoxic N-(Hydroxymethyl) acrylamide (NHMAGAT) polymer gel dosimeters with low toxicity and low cost are invented for radiation treatment planning. A high dose response was displayed in this invention using nuclear magnetic resonance (NMR) and spectrophotometer methods. The response of both types of gels showed an independence of dose rate and radiation energy and a high degree of stability after irradiation.
Abstract:
A process for preparing a polymer-encapsulated carbon nanotube material is described. The process comprises a suspension polymerization process involving a carbon nanotube material. The process can also involve a charge control agent. The polymer-encapsulated carbon nanotube material has particles size in the micron range. The material can be used in toner applications.
Abstract:
The present disclosure relates to a composition and a method to prepare a polymer nanoparticle using miniemulsion polymerization (MEP) comprising a monomer, a reactive co-stabilizer and a reactive surfactant. The reactive co-stabilizer as disclosed is a methacrylate containing perfluorinated or semifluorinated side chains like 1H,1H,2H,2H-perfluorodecyl methacrylate (H2F8MA). Further, the reactive stabilizer as used in the preparation is cetyl trimethyl ammonium chloride (CTAB). The polymer nanoparticle as formed has an enhanced stability and low VOC as compared to a pure polymer prepared by MEP.
Abstract translation:本公开涉及使用包含单体,反应性共稳定剂和反应性表面活性剂的细乳液聚合(MEP)制备聚合物纳米颗粒的组合物和方法。 所公开的反应性共稳定剂是含有全氟化或半氟化侧链,如1H,1H,2H,2H-全氟癸基甲基丙烯酸酯(H 2 F 8 MA)的甲基丙烯酸酯。 此外,制备中使用的反应性稳定剂是十六烷基三甲基氯化铵(CTAB)。 与由MEP制备的纯聚合物相比,形成的聚合物纳米颗粒具有增强的稳定性和低VOC。
Abstract:
A radio-chromic film dosimeters based on polystyrene binder and dithizone dye are invented for high dose applications. The dose response of Dz-PS film dosimeters increases linearly with increase absorbed dose up to 100 kGy. The dose sensitivity of the films increases strongly with increase of concentrations of dithizone dye. The effects of irradiation temperature, relative humidity, dose rate and the stability of the response of the films after irradiation were investigated and found that these films could be used as routine dosimeter in industrial radiation processing.
Abstract:
There is provided a process for preparing a polymer/carbon black composite material. The process comprises a mini emulsion polymerization (MEP) process involving a reactive co-stabilizer. Optionally, the co-stabilizer is a long alkyl chain methacrylate or a mixture of long alkyl chain methacrylates.
Abstract:
Novel normoxic N-(Hydroxymethyl) acrylamide (NHMAGAT) polymer gel dosimeters for MRI scanning are introduced for radiotherapy planning system. The composition of the NHMAGAT polymer gel and method of making the NHMAGAT polymer gel dosimeter are disclosed. The dosimeters are irradiated with Varian Rapid Arc linear systems at different absorbed doses. The results show that the percent depth dose and 2D plan dose distribution of NHMAGAT polymer gel dosimeters are in a good agreement with the ionization chamber measurements and CT planned dose distribution, respectively.