Patent Number: 6,252,173

Title: Bauxite flame-retardant fillers for insulators or sheathing

Abstract: Bauxite, particularly high alumina bauxite, and brucite are used as flame-retardants in non-aqueous organic polymer formulations particularly for electric insulation or sheathing or encapsulation, and also in bitumen. The formulations are suitable for shaping e.g. by casting, moulding or curing at temperatures of 150.degree. C. or 200.degree. C. Water resistance and other properties including cost of bauxite and brucite compare favourably with the conventional flame-retardant aluminium trihydrate.

Inventors: Brown; Steve (Uxbridge, GB), Mead; Natalie (Banbury, GB), Evans; Ken (Chalfont St Peter, GB), Rodriguez; Consuelo Espejo (Madrid, ES), Dayer; Andrew John (Banbury, GB)

Assignee: Alcan International Limited

International Classification: C08K 3/00 (20060101); C08K 3/22 (20060101); C09K 21/00 (20060101); C09K 21/02 (20060101); H01B 7/295 (20060101); H01B 7/17 (20060101); H05K 1/03 (20060101); H01B 003/28 (); H01B 003/44 (); H01B 007/282 (); H01B 007/295 (); C08K 003/22 ()

Expiration Date: 06/26/2018