Bromine Compounds Limited

Icl-ip America Inc.

Dorit Canfi

Joseph Zilberman

Andrew M Piotrowski

Ron Frim

Jakob Oren

Andrew Gregor

Dov Beruben

Nasif Yassin

Alon Tavor

David Ioffe

Grigory Titelman

Samuel Bron

Olga Weinberg

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

Polybrominated bisaryl compounds containing bromomethyl or bromomethylene groups are provided, as well as flameproof polymeric formulations comprising the compounds. The novel compounds exhibit a good thermal stability, and are particularly suitable for flame-retarding polystyrene thermoplastic foams. A process for making the polybrominated bisaryl compounds is also provided.

Flame retardant bromobenzyl systems

The present invention provides novel pentabromobenzyl alkyl ethers serving as highly effective flame retardants in polymers. The invention further provides a fire retarded polymer composition comprising said pentabromobenzyl alkyl ethers.

Pentabromobenzyl alkyl ethers and their use as fire retardants

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Haifa, Israel

Dorit Canfi