Bromine Compounds Limited

Dov Beruben

Michael R Peled

Ron Frim

Joseph Zilberman

Jakob Oren

Yaniv Hirschsohn

Ella Rapaport

Bertha Croitoru

Dorit Canfi

Yelena Epshtein Assor

Nasif Yassin

Dan Kopel

Yaakov Rachmilevitch

Poly (pentabromobenzyl acrylate) having weight average molecular weight (Mw) in the range from 4,000 to 120,000 and polydispersity index of less than 10 as determined by high temperature gel permeation chromatography, wherein the glass transition temperature of the poly (pentabromobenzyl acrylate) is not more than 150 C.&#xb0;, the poly (pentabromobenzyl acrylate) includes chains which are terminated by an end group derived from a chain length regulator, wherein the end group is a thiol group &#x2014;SR, and wherein R, is a linear or branched alkyl group composed of not less than 8 carbon atom.

Poly (pentabromobenzyl acrylate) having specific properties

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

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Beer-Sheva, Israel

Dov Beruben