Phosphonium salt composition
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United States of America Patent
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Nov 19, 2002
Grant Date -
N/A
app pub date -
Apr 3, 2000
filing date -
Oct 4, 1997
priority date (Note) -
Expired
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Abstract
A composition comprising tris(hydroxymethyl)phosphine or phosphorus-containing salts or condensates of those salts with nitrogen-containing compounds coated or absorbed onto a solid or porous substrate is disclosed. The salts or condensates are based on tetrakis(hydroxymethyl)phosphonium salts. The substrate has a melting point greater than 70.degree. C. and is an optionally hydroxyl-substituted di- or polycarboxylic acid. The compositions may be used with water soluble film forming polymers to make sachets or bags containing sachets or bags of these phosphorous-containing compositions along with sachets or bags of compositions that are incompatible with these phosphorous-containing compositions.
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