Icl-IP America Inc.

Bromine Compounds Limited

Supresta LLC

Akzo Nobel N.v.

Andrew M Piotrowski

Joseph Zilberman

Mark Gelmont

Jeffrey Stowell

Eran Gluz

Mayank Singh

Sergei Vladimirovich Levchik

Zhihao Chen

Sophia Dashevsky

Ron Frim

Yaniv Hirschsohn

Michael Yuzefovich

David Yoffe

Kali Ananth Suryadevara

Edward D Weil

Qiang Yao

Andrew Gregor

Dorit Canfi

Mark Buczek

Yossi Zilberman

Meng Zhang

Anantha N Desikan

Stephen J Chaterpaul

Yingzhong Guo

Mike Nagridge

Greg Symes

Mariya Kozytska

Sergei Levchik

Sergei V Levchik

The present invention provides fire-retarded rigid polyurethane foam comprising the reaction product of polyol and isocyanate foam forming components and a dialkyl phosphorus-containing compound, namely a reactive mono-hydroxyl-functional dialkyl phosphinates, as flame retardant, serving as highly efficient reactive flame retardant in said rigid polyurethane foam.

Rigid polyurethane foam containing reactive flame retardant

The present invention provides dialkyl phosphorus-containing compounds, namely reactive mono-hydroxyl-functional dialkyl phosphinates, serving as highly efficient reactive flame retardants in flexible polyurethane foams. The invention further provides fire-retarded polyurethane compositions comprising said the reaction product of the mono-hydroxyl-functional dialkyl phosphinates with polyol and isocyanate foam forming components.

Reactive flame retardants for flexible polyurethane foams

The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, semi-rigid and rigid polyurethane and polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.

Reactive flame retardants for polyurethane and polyisocyanurate foams

The present invention provides novel cyclic phosphorus-containing compounds, namely hydroxyl-functional phospholene-1-oxides, serving as highly efficient reactive flame retardants in urethane systems, particularly in flexible polyurethane foams, rigid polyurethane foams and rigid polyisocyanurate foams. The invention further provides fire-retarded polyurethane compositions comprising said hydroxyl-functional phospholene-1-oxides.

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.

Active ester curing agent compound for thermosetting resins, flame retardant composition comprising same, and articles made therefrom

The invention relates to a process for preparing bromine-containing polymer, comprising a Friedel-Crafts alkylation reaction of tetrabromoxylylene dihalide, or tetrabromoxylylene dihalide in combination with pentabromobenzyl halide, with a reactant having one or more six-membered aromatic rings, wherein the reaction takes place in a solvent in the presence of a Friedel-Crafts catalyst, and isolating from the reaction mixture the bromine-containing polymer. The so-formed polymers and their use as flame retardants form additional aspects of the invention.

Bromine-containing polymers useful as flame retardants

Preparation of bromine-containing polymers useful as flame retardants

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.

Flame retardant additive composition comprising cyclic phosphonate blend and bis-phosphate ester, and polyurethane foam containing the same

There is provided herein a curing agent compound for curing thermosetting resins, e.g., epoxy resins, a composition comprising a thermoplastic and/or 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.

Flame retardant for epoxy resin containing phosphonate and phosphinate functionality

A monohydroxy cyclic phosphonate substantially free of polyhydroxy phosphonate is employed as a reactive flame retardant in flexible polyurethane.

Monohydroxy cyclic phosphonate substantially free of polyhydroxy phosphonate, process for making same and flame retardant flexible polyurethane foam obtained therefrom

This invention relates to an epoxy resin composition, in particular a curable phosphorus containing flame retardant epoxy resin composition comprising epoxy resin and an epoxy resin chain-extending amount of a diaryl alkylphosphonate and/or diaryl arylphosphonate and a cross-linking agent. The curable flame retardant compositions are useful in e.g., printed wiring boards or molding compounds for electronic applications, protective coatings, adhesives, as well as structural and decorative composite materials.

Curable phosphorus-containing flame retardant epoxy resin

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.

Water miscible solvent based process for purifying a bisphosphate

A flexible polyurethane foam-forming composition and the flexible polyurethane foam obtained therefrom contain, as flame-retardant additive, a halogen-free phosphonate compound which is substantially unreactive for isocyanate, contains at least about 5 weight percent phosphorus, has an acid value of about 2 mg KOH/g or less, a volatility as measured by thermogravimetric analysis not exceeding a 5.0 percent weight loss at a temperature of about 150&#xb0; C., and a weight average molecular weight of from about 200 to about 2000.

Flame-retardant flexible polyurethane foam

An epoxy resin composition comprising an epoxy resin and, as the effective curing agent, an epoxy-reactive polyphosphonate which can be of the formula (I) where 'Y' is an arylene and 'n' can range from about 2 to about 30. 

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Yorktown, NY, United States of America

Andrew M Piotrowski