Patent ID: 6482483
Filing Date: 2002-11-19
Classification: A01N,C09K,Y10T

Abstract:
A composition comprising a phosphorus containing material coated on or absorbed in a solid or porous acid substrate,wherein said phosphorus-containing material is selected from the group consisting of tris(hydroxymethyl)phosphine (THP), tetrakis(hydroxymethyl)phosphonium salts (THP+ salts) and condensates of said THP+ salts with nitrogen-containing compounds, and wherein said solid or porous acid substrate has a melting point greater than 70Â° C. and consists essentially of an organic acid selected from the group consisting of: (i) saturated di- or poly-carboxylic acids; (ii) unsaturated di- or poly-carboxylic acids; (iii) aromatic di- or poly-carboxylic acids; and (iv) hydroxy-substituted di- or poly carboxylic acids.