US 6,981,998 B2
Flame-retardant compositions of methanephosphonic acid, boric acid and an organic base
Salman Dermeik, Augsburg (Germany); Reinhold Braun, Schwabmünchen (Germany); and Karl-Heinz Lemmer, Augsburg (Germany)
Assigned to Ciba Specialty Chemicals Corporation, Tarrytown, N.Y. (US)
Appl. No. 10/495,677
PCT Filed Nov. 12, 2002, PCT No. PCT/EP02/12602
§ 371(c)(1), (2), (4) Date May 13, 2004,
PCT Pub. No. WO03/042329, PCT Pub. Date May 22, 2003.
Claims priority of application No. 01127098 (EP), filed on Nov. 15, 2001.
Prior Publication US 2005/0017222 A1, Jan. 27, 2005
Int. Cl. D06M 13/44 (2006.01)
U.S. Cl. 106—18.13 10 Claims
 
1. A composition obtained by the following successive steps of:
a) preparing a mixture A), which includes methanephosphonic acid, boric acid and water,
b) adding dicyandiamide and/or guanylurea to said mixture A),
c) optionally neutralizing the resultant mix with a base.