US2005232875A1PendingUtilityA1

Water-soluble keratin derivative and use thereof

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Assignee: INST OF RHEOLOGICAL FUNCTION OPriority: Jul 25, 2002Filed: Jul 25, 2003Published: Oct 20, 2005
Est. expiryJul 25, 2022(expired)· nominal 20-yr term from priority
Inventors:Keiji UmedaYositaka NadachiKatsunobu SakaiYukitaka NogamiMasahiko Sudo
C08H 1/06A61Q 17/04A61K 8/65
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Claims

Abstract

The present invention provides a novel water-soluble keratin derivative and applications thereof. Water-soluble keratin produced by the alkali treatment of feathers, and modified keratin, gives the following useful materials: (1) a high energy wave absorber, (2) a luminescent substrate, (3) a material weatherproofness improver, (4) a water repellant, and (5) a foaming agent.

Claims

exact text as granted — not AI-modified
1 . A water-soluble keratin derivative, obtained by the processing of poultry feathers by the following steps: 
 (1) an alkali desulfurization and water solubilization reaction step; and    (2) a step of separating the water-soluble main component, or obtained by the above (1) and (2) and:    (3) a high energy wave irradiation step.    
   
   
       2 . The water-soluble keratin derivative according to  claim 1 , wherein the molecular weight is from 5 to 50 kDa.  
   
   
       3 . The water-soluble keratin derivative according to  claim 1  or  2 , wherein an alkali with a concentration of at least 1.1% is used in an amount of at least 2 wt % with respect to the feather weight.  
   
   
       4 . The water-soluble keratin derivative according to  claim 1 ,  2 , or  3 , wherein UV-C is used as the primary source of high energy waves.  
   
   
       5 . A high energy wave absorber containing the water-soluble keratin derivative according to any of  claims 1  to  4 .  
   
   
       6 . A fluorescent material containing the water-soluble keratin derivative according to any of  claims 1  to  4 .  
   
   
       7 . A material weatherproofness improver containing the water-soluble keratin derivative according to any of  claims 1  to  4 .  
   
   
       8 . A water repellant containing the water-soluble keratin derivative according to  claim 1 ,  2 , or  3 .  
   
   
       9 . The high energy wave absorber according to  claim 5 , wherein the high energy waves are ultraviolet rays or an electron beam.

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