Bauxite as flame-retardant filler for polymer compositions

Details Bauxite as flame-retardant filler for polymer compositions Bauxite as flame-retardant filler for polymer compositions

C - Chemistry, Metallurgy

08

K

400/1110, 400/11

C08K 9/00 (2006.01) C08K 3/34 (2006.01) C08L 7/02 (2006.01) C08L 21/02 (2006.01)

Patent

CA 1102499

ABSTRACT OF THE DISCLOSURE Bauxites are rendered compatible with polymer compo- sitions employed in the carpet industry. Suitable bauxites, which can be employed as flame-retarding fillers, are characterized by a surface area of less than about 12 m2/g, a pH in aqueous suspension of more than about 6.5 and a particle size distribution, wherein less than about 15% by weight of the particles have a size of less than 3 microns. Bauxites having a surface area in the range of about 12-20 m2/g can also be rendered compatible by modifying their surfaces with a small but effective amount of modifier selected from inorganic phosphates, silicates, aliphatic and aromatic hydroxycarboxylic acids.

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