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. |
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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.
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