Abstract:
There is provided herein a lubricant comprising a major amount of natural and/or synthetic basestock and a minor amount of aryl bisphosphate ester of the general formula wherein each R is independently an alkyl group of from 1 to about 4 carbon atoms and wherein R 1 is selected from a divalent phenyiene group such that the aryl bisphosphate ester is a hydroquinone bisphosphate wherem the divalent phenyiene group is optionally substituted with an R* group wherein R* is R or H; a divalent phenyiene group such that the aryl bisphosphate ester is a resorcinol bisphosphate wherein the divalent phenyiene group is optionally substituted with at least one R* group; a divalent neopentyl group; and, a divalent bisphenylene group containing an isopropylene bridge, and wherein a is 1 or 2.
Abstract:
A monohydroxy cyclic phosphonate substantially free of polyhydroxy phosphonate is employed as a reactive flame retardant in flexible polyurethane.
Abstract:
There is provided herein a flame retardant and curing agent compound for curing thermosetting resins, e.g., epoxy resins, a composition comprising a thermosetting resin, e.g., an epoxy resin and the curing agent, an article comprising the curing agent, and a method of making the curing agent.
Abstract:
There is provided herein a flame retardant additive composition comprising (a) a cyclic phosphonate mixture of (i) (5-ethyl-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl methyl ester of P-alkylphosphonic acid and (ii) bis[(5-ethyl-2-2-methyl-2-oxido-1,3,2-dioxaphosphorinan-5-yl)methyl]ester of P-alkyl phosphonic acid; and, (b) an aryl bisphosphate ester of the general formula (I) herein. There is also provided herein a polyurethane foam containing the flame retardant additive composition as well as articles made comprising said polyurethane foam.
Abstract:
There is provided herein a process for purifying bisphosphate comprising solvating a molten bisphosphate in a mixture of water and water miscible solvent; cooling the solution over a period and to a temperature that provides for crystallization of solid product; increasing the pH of the solution prior to, and/or during, and/or after the initiation of crystallization, and/or after crystallization, by the addition of a base; and after crystallization is complete, separating solid product from the solution; washing the separated solid product in the same and/or different mixture of water and water miscible solvent; and, washing the solid product which has been washed in the mixture with water.