The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 22, 2013
Filed:
Jun. 23, 2010
Akinori Takagi, Osaka, JP;
Susumu Katsuen, Osaka, JP;
Kunihiro Ohshima, Osaka, JP;
Kurashiki Boseki Kabushiki Kaisha, Okayama, JP;
Abstract
Disclosed is a method for producing a modified animal fiber, the method includes step 1 () of pre-oxidizing a cystine bond (—S—S— bond) present in an epidermal cell of an animal fiber to bring the cystine bond into a low oxidation state, step 2 () of oxidizing with ozone the pre-oxidized —S—S— bond to bring the —S—S— bond into at least one high oxidation state selected from di-, tri-, and tetra-oxidation states, and step 3 () of reductively cleaving the —S—S— bond in a high oxidation state. The method imparts shrink resistance and pilling resistance to an animal fiber. In the step 2 () ozone is microdispersed in an aqueous solution comprising an anionic surfactant having a Calkyl group, and the animal fiber is contacted with the ozone. Accordingly, the present invention provides a method for efficiently producing in a short period of time an animal fiber having excellent shrink resistance that barely undergoes felting when washed in an aqueous system in shrink proofing an animal fiber using ozone.