The present invention relates to an oligomer or polymer, or to a composition comprising said oligomer or polymer, which are particularly useful as a stabiliser for organic materials. The present invention also relates to an intermediate for the synthesis of the above-mentioned oligomers or polymers.

Disclosed are epoxy resins exhibiting a highly favorable combination of tensile strength and elongation with respect to prior art epoxy systems. The elastomeric epoxy resin systems of the invention are prepared utilizing a curing agent containing at least one monoprimary amine, and are particularly useful in applications such as, for example, castings, potting, composites, crack sealing, coatings, adhesives, roofing materials, flooring or reinforced membranes.

A composition includes a polyphosphoric acid-modified acrylic polyol, wherein the polyphosphoric acid-modified acrylic polyol has greater than zero, but less than 1.0 wt % modification with polyphosphoric acid.

A composition includes a polyphosphoric acid-modified acrylic polyol, wherein the polyphosphoric acid-modified acrylic polyol has greater than zero, but less than 1.0 wt % modification with polyphosphoric acid.

In an example, a flame-retardant, cross-linked polyhydroxyalkanoate (PHA) material includes a first PHA material that is cross-linked to a second PHA material via a phosphorus-based cross-linker.

Provided is a phosphor-functionalized nanoparticle that includes an inorganic nanoparticle core; surface polymer brushes that include a plurality of long-chain polymers bonded to the surface of the inorganic nanoparticle core, said long-chain polymers each having molecular weight greater than 500, and a plurality of short-chain polymers bonded to the surface of the inorganic nanoparticle core, said short-chain polymers each having molecular weight less than 0.5 times the average molecular weight of the long-chain polymers; and one or more organic phosphors bonded to at least one of the inorganic nanoparticle core and one or more of the plurality of short-chain polymers. Graft density of the short-chain polymers on the surface of the inorganic nanoparticle core (σ.sub.SC) is greater than graft density of the long-chain polymers on the surface of the inorganic nanoparticle core (σ.sub.LC). Also provided are polymer matrices, LED's, optical systems, lighting devices, and fixtures that include the inventive nanoparticle.

Provided is a phosphor-functionalized nanoparticle that includes an inorganic nanoparticle core; surface polymer brushes that include a plurality of long-chain polymers bonded to the surface of the inorganic nanoparticle core, said long-chain polymers each having molecular weight greater than 500, and a plurality of short-chain polymers bonded to the surface of the inorganic nanoparticle core, said short-chain polymers each having molecular weight less than 0.5 times the average molecular weight of the long-chain polymers; and one or more organic phosphors bonded to at least one of the inorganic nanoparticle core and one or more of the plurality of short-chain polymers. Graft density of the short-chain polymers on the surface of the inorganic nanoparticle core (σ.sub.SC) is greater than graft density of the long-chain polymers on the surface of the inorganic nanoparticle core (σ.sub.LC). Also provided are polymer matrices, LED's, optical systems, lighting devices, and fixtures that include the inventive nanoparticle.

The present invention exploits reactive organophosphorus compounds containing unsaturated vinyl groups, which can be used in a flexible and highly controlled manner to prepare various macromolecular derivatives either via radical reactions or via Michael addition with suitable nucleophiles. Based on the fact that secondary amine groups on the one hand and vinyl groups on the other hand can work as mutual linking sites, an arsenal of novel and useful addition products can be built up. By selecting the number of secondary amine sites and vinyl sites of the participating reaction partners, very different addition products can be formed. In particular, one can form either linear chain type macromolecules (i.e. linear oligomers or polymers) or highly crosslinked network polymers.

A composition, method, and article of manufacture are disclosed. The composition is formed by polymerizing monomers, and includes at least one flame-retardant bis(triketone) monomer and at least one amine monomer. The method includes obtaining at least one flame-retardant bis(triketone) monomer, obtaining at least one amine monomer, and polymerizing the monomers to form a flame-retardant polydiketoenamine. The article of manufacture includes a polymer formed by polymerizing at least one flame-retardant bis(triketone) monomer and at least one amine monomer.

The present invention provides a hydrogel for comprising a biodegradable polyphosphazene polymer, a radiation-sensitive diselenide cross-linker; and one or more payloads releasably loaded within the hydrogel. The present invention further provides methods for radiosensitizing target tissues such as tumors and providing sustained delivery of therapeutics triggered by irradiation. In another aspect, the present invention provides a method that includes: introducing the hydrogel, as describes herein, adjacent to malignant or marginal tissue; and administering radiation to the hydrogel, thereby disrupting the selenocystamine cross-linkers and releasing the one or more payloads.