Abstract:
The present invention provides a trialkoxysilane having structure I wherein R1 is independently at each occurrence a C1-C3 alkyl group; R3 is independently at each occurrence a hydrogen or a C1-C3 alkyl group; R4 is a C1-C5 aliphatic radical, a C7-C12 aromatic radical, or a C5-C10 cycloaliphatic group; n is 0, 1, 2 or 3; q is 1, 2 or 3; t is 0, 1 or 2; and X− represents a charge balancing counterion. The trialkoxysilanes are useful for the preparation of nanoparticulate diagnostic imaging agent compositions.
Abstract:
This disclosure details methods and techniques for inhibiting natural gas hydrate formation in gas conduits. In one embodiment, an article is provided which comprises (a) a gas conduit defining a gas flow channel; (b) an interior surface of the gas conduit; (c) a hydrate inhibiting coating on the interior surface, wherein the coating comprises: (i) component A, a one- or two-part room temperature vulcanizable polyorganosiloxane composition comprising a surface-treated filler, a condensation catalyst, and a crosslinking agent; and any reaction products thereof; and optionally (ii) component B, a hydrate release-enhancing proportion of at least one polyorganosiloxane comprising one or more silanol or alkoxy-silyl groups and comprising from about 10 weight percent to about 85 weight percent of at least one hydroxy-terminated or alkoxy-terminated polyoxyalkylenealkyl radical; and optionally (iii) any reaction products thereof.
Abstract:
Embodiments of the present disclosure include organic light emitting diode (OLED) devices having hollow objects configured to scatter otherwise trapped light out of the device, thereby improving the performance of the device. The hollow objects are dispersed in one or more organic layers of the OLED device. The hollow objects may have a similar refractive index to that of air, such that visible light emitted by the emissive layer may contact the hollow objects in the OLED device and may be scattered out of the device. In some embodiments, the hollow objects may be spherical or tubular, and may be sized to be larger than the visible light wavelength spectrum.
Abstract:
Compositions of nanoparticles functionalized with at least one net positively charged group and at least one net negatively charged group, methods for making a plurality of nanoparticles, and methods of their use as diagnostic agents are provided. The nanoparticles have characteristics that result in minimal retention of the particles in the body compared to other nanoparticles. The nanoparticle comprises a core and a shell. The shell comprises a plurality of silane moieties; at least one silane moiety of the plurality is functionalized with a net positively charged group and at least one silane moiety of the plurality is functionalized with a net negatively charged group.
Abstract:
Compositions of nanoparticles functionalized with at least one zwitterionic moiety, methods for making a plurality of nanoparticles, and methods of their use as diagnostic agents are provided. The nanoparticles have characteristics that result in minimal retention of the particles in the body compared to other nanoparticles. The nanoparticle comprises a core, having a core surface essentially free of silica, and a shell attached to the core surface. The shell comprises at least one silane-functionalized zwitterionic moiety.
Abstract:
The invention is directed to a liquid laundry detergent composition comprising at least one detergent ingredient selected from the group consisting of anionic surfactant, zwitterionic surfactant, amphoteric surfactant, and mixtures thereof; a coacervate phase forming cationic polymer; and one or more fabric care ingredients selected from the group consisting of one or more cationic silicone polymers comprising one or more polysiloxane units and one or more nitrogen moieties; one or more amino silicone polymers; one or more nitrogen-free silicone polymers; and mixtures thereof; and a liquid carrier for providing cleaning and fabric care benefits. A process for preparing such compositions, a method for treating substrates, a method for providing certain fabric care benefits and the use of such compositions are also described.
Abstract:
Optical substrates such as films and sheets, and methods for making optical substrates are described. The optical substrates contain at least one layer that contains glass or polymeric materials and boron nitride particles. The boron nitride particles have the requisite optical properties as well as excellent thermal conductivity, thus minimizing the potential for cracks, waves and wrinkles due to excess heat generated in applications such as liquid crystal displays, projection displays, traffic signals, and illuminated signs.
Abstract:
A silicone composition is provided which comprises at least one polysiloxane or siloxane oligomer functionalized with at least one amino group and at least three functional groups capable of cross-linking wherein the polysiloxane or siloxane oligomer imparts flame retardancy on a cellulose-containing substrate. Further embodiments of the present invention include a method for making and a cellulose-substrate comprising the aforementioned silicone composition.
Abstract:
A silicone composition is provided which comprises at least one polysiloxane or silicone resin, and at least one molecular hook wherein the molecular hook comprises a hexafluorophosphate counterion, a tetrafluoroborate counterion, a triflate counterion, or combinations thereof. Further embodiments of the present invention include a method for substantially increasing the thermal stability of a silicone composition and a method for making the silicone composition.
Abstract:
A composition and method for making a silicone composition is provided which comprises at least one polysiloxane or silicone resin, at least one linker, and at least one molecular hook wherein the molecular hook comprises a heterocyclic trimethylpyrimidinium compound.