Patent ID: 6344158
Filing Date: 2002-02-05
Classification: C08K

Abstract:
A flame retardant combination for thermoplastic polymers comprising, as component A, a salt of 1-hydroxydihydrophosphole oxides of formula (Ia) or formula (Ib) and/or 1-hydroxyphospholane oxides of formula (II), as component B, a synthetic inorganic compound and/or a mineral product selected from zeolites, ceramic powder, magnesium hydroxide, hydrotalcites, magnesium carbonates, magnesium calcium carbonates and other alkaline earth carbonates, zinc oxide, zinc stannate, zinc hydroxystannate, zinc phosphate, zinc borate, zinc sulfide, aluminum hydroxide, aluminum phosphate and red phosphorus,and, as component C, nitrogen compounds having the formulae (III) to (VIII) or are mixtures of these or the nitrogen compounds are oligomeric esters of tris(hydroxyethyl) isocyanurate with aromatic polycarboxylic acids or are nitrogen-containing phosphates of the formula (NH4)yH3âˆ’yPO4 or (NH4PO3)z, where y is from 1 to 2 and z is from 1 to 10,000.