Polyamide compositions for removal of polyphenols from liquids
AssigneeW. R. Grace & Co.-Conn.
InventorDemetrius Michos
Life of this patent
Estimating the term…
Abstract
Amide-containing polymers characterized by the presence of piperazine amide and/or substituted piperazine amide in the polymer chain are used as adsorbents to remove polyphenolic compounds from liquids. The compositions are especially useful in combination with protein removal agents such as silica gel or tannin. The amide-containing polymer compositions (alone or in combination with protein removal agents) are especially useful in the stabilization and/or chillproofing of plant derived liquids or beverages such as beer, wine, fruit juice and vegetable juice.
Claims23
A method of treating a liquid containing polyphenolic compounds to remove some or all of said polyphenolic compounds from said liquid, said method comprising:
- (a) contacting said liquid with a polymer wherein at least a portion of the polymer comprises piperazine amide or substituted piperazine amide whereby at least a portion of said polyphenolic compounds is adsorbed by said amide-containing polymer, and
- (b) separating said amide-containing polymer with said adsorbed polyphenolic compounds from said liquid.
Dependencies are inferred from the claim text.