132 results about "Nitrone" patented technology

A mixture of a polyester, such as poly(ethylene terephthalate) PET, or a polyamide, and a suitable stabilizer selected from the group consisting of hydroxylamine stabilizers, substituted hydroxylamine stabilizers, nitrone stabilizers and amine oxide stabilizers, when extrusion compounded exhibits a lower residual acetaldehyde content than does polyester or polyamide alone when similarly treated. The invention pertains to any polyester or polyamide used in the manufacture of molded articles, fibers or films, for instance bottles or containers which are used to store consumer materials, for example food, beverages and water.

This invention relates to a tire which is comprised of a generally toroidal-shaped carcass with an outer circumferential tread, two spaced beads, at least one ply extending from bead to bead and sidewalls extending radially from and connecting said tread to said beads, wherein said tread is adapted to be ground-contacting, and wherein said tread is a cured the rubber formulation which is comprised of (1) hydroxylamine end-group functionalized rubbery polymer of the structural formula: wherein P represents polymer chains of the rubbery polymer, and wherein (i) R1 and R2 are independently selected from the group consisting of substituted or unsubstituted straight, branched, or cyclic alkylgroups, alkenyl groups, alkynyl groups, aryl groups, heteroaryl groups, alkaryl groups, alkoxyl groups, halo-alkyl groups, and combinations thereof; or (ii) R1 and R2 taken together with the carbon and nitrogen to which they are attached form a 5 to 8 membered ring; and (2) a filler selected from the group consisting of carbon black and silica.

A polyfunctional radical scavenger hydrogel formulation providing extended protection of the extracellular space within a wound site. The polyfunctional radical scavenger hydrogel formulation is generally formed from a hydrogel, a sterically hindered nitrone and a sterically hindered amine differing from nitrone with respect to at least one property. A portion of the nitrone included with the formulation and / or amine included within the formulation may be dissolved, suspended and / or bonded to a polymer of the hydrogel.

The present invention provides aryl nitrones, compositions comprising the same and methods of their use for the treatment or prevention of oxidative, ischemic, ischemia / reperfusion-related and chemokine mediated conditions.

The invention discloses a method for preparing polyhydroxy cyclic nitrones. The method for preparing the polyhydroxy cyclic nitrones of the structure of formula I provided by the present invention comprises the following steps: 1) reacting the hemiacetal of the structure of formula II with O-methylhydroxylamine hydrochloride under alkaline conditions to obtain The methyl oxime ether of the structure of formula III; 2) the methyl oxime ether of the structure of formula III is reacted with methanesulfonyl chloride to obtain the mesylate of the structure of formula IV; 3) The mesylate of the structure of formula IV is subjected to acidic conditions 4) The aldehyde of formula V structure reacts with hydroxylamine hydrochloride under alkaline conditions to obtain the polyhydroxy cyclic nitrone; wherein, R1, R2 and R3 is an alkyl, alkenyl, aryl or substituted aryl group. The present invention can prepare polyhydroxy cyclic nitrones with high reactivity through several steps of reactions by using sugars widely existing in nature as raw materials, thereby realizing the concise, efficient and large-scale preparation of such compounds.

The present invention relates to unnatural amino acids comprising a cyclooctynyl or trans-cyclooctenyl analog group and having formula (I) or an acid or base addition salt thereof. The invention also relates to the use of said unnatural amino acids, kits and processes for preparation of polypeptides that comprise one or more than one cyclooctynyl or trans-cyclooctenyl analog group. These polypeptides can be covalently modified by in vitro or in vivo reaction with compounds comprising an azide, nitrile oxide, nitrone, diazocarbonyl or 1,2,4,5-tetrazine group.