Modified porous starch
AssigneeThe Procter & Gamble Company
InventorGeorge Peter Rizzi
Life of this patent
Estimating the term…
Abstract
The present invention relates to microporous starch granules surface coated with a hydrophobic agent said granules useful in absorbing hydrophobic malodorous materials either from the liquid or gas phase. The hydrophobic granules are useful in controlling the malodors associated with catmenials and hygienic undergarments as well as being useful for absorbing unwanted food and other environmental malodors.
Claims9
A material for absorbing a hydrophobic compound comprising:
- a) a partially hydrolyzed porous starch matrix, the starch having a surface;
- and
- b) a siloxane surface modifying agent applied to the porous starch matrix, wherein the modifying agent renders the surface of the starch substantially hydrophobic.
A method for absorbing a hydrophobic compound from an aqueous-based medium comprising the step of contacting the aqueous-based medium with a surface modified microporous starch granule comprising a partially hydrolyzed porous starch matrix and a siloxane surface modifying agent applied to the porous starch matrix, wherein the modifying agent renders the surface of the starch granule substantially hydrophobic.
A method for absorbing a hydrophobic material comprising the step of contacting the hydrophobic material having a ClogP greater than 1 with an absorbent material comprising a partially hydrolyzed porous starch matrix and a siloxane surface modifying agent applied to the porous starch matrix, wherein the modifying agent renders the porous starch matrix substantially hydrophobic.
Dependencies are inferred from the claim text.