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Process for making foams useful as absorbent members for catamenial pads    

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United States Patent5849805   
Link to this pagehttp://www.wikipatents.com/5849805.html
Inventor(s)Dyer; John Collins (Cincinnati, OH)
AbstractFoams capable of absorbing blood and blood-based fluids, especially menses. These absorbent foams have high capillary absorption pressures required of absorbents used in catamenial products, yet have sufficient openness to allow free movement of the insoluble components in blood-based fluids such as menses. These absorbent foams are made by polymerizing high internal phase emulsions (HIPEs) where the volume to weight ratio of the water phase to the oil phase is in the range of from about 20:1 to about 125:1. These foams are particularly useful as absorbent members for catamenial pads.
   














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Patent Text Patent PDF Print Page Summary File History
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Inventor     Dyer; John Collins (Cincinnati, OH)
Owner/Assignee     The Procter & Gamble Company (Cincinnati, OH)
Patent assignment
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Company News
Publication Date     December 15, 1998
Application Number     08/542,497
PAIR File History     Application Data   Transaction History
Image File Wrapper   Patent Term   Fees
Litigation
Filing Date     October 13, 1995
US Classification     521/64 521/62 521/63 604/358 604/369
Int'l Classification     C08J 009/28
Examiner     Foelak; Morton
Assistant Examiner    
Attorney/Law Firm     Roof; Carl J. Guttag; Eric W. , Linman; E. Kelly ,
Address
Parent Case     This application is a continuation-in-part application of U.S. Ser. No. 08/370,697, filed Jan. 10, 1995 abandoned by J. Dyer.
Priority Data    
USPTO Field of Search     521/64 521/62 521/63 604/358 604/369
Patent Tags     making foams useful absorbent members catamenial pads
   
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