Title:
COMPOSITION FOR TREATING POROUS ARTICLE, TREATMENT METHOD, AND USE THEREOF
Document Type and Number:
WIPO Patent Application WO/1998/024890
Kind Code:
A1
Abstract:
A method for treating a porous article by efficiently increasing the molecular weights of an enzyme having a polyphenol oxidation activity in an alkaline pH region, a phenolic compound and/or an aromatic amine compound in a porous article; a composition for use in the above method, and a treated porous article having imparted or improved strength, abrasion resistance, weather resistance, rust resistance, flame retardancy, antimicrobial property, preservative property, germicidal property, insecticidal property, insect repellency, antiviral property, biological repellency, adhesion, sustained release of chemicals, coloring, dimensional stability, cracking resistance, deodorant property, deoxygenation, humidification, water absorption, water repellency, surface smoothness, biological affinity, ion exchange property, formaldehyde absorption, chemical leaching prevention, and prevention of an inorganic compound from migrating onto the surface of the porous article.
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Inventors:
Echigo, Takashi (Central Research Laboratory, Showa Denko K.K. 1-1, Oonodai 1-chome, Midori-k, Chiba-shi Chiba 267, JP)
Ohno, Ritsuko (Analytical Instrument Dept. Shoko Co. Ltd, Yoshizawa Building 2F, 31-7, Shinbashi 4-chom, Minato-ku Tokyo 105, JP)
Ohno, Ritsuko (Analytical Instrument Dept. Shoko Co. Ltd, Yoshizawa Building 2F, 31-7, Shinbashi 4-chom, Minato-ku Tokyo 105, JP)
Application Number:
PCT/JP1997/003798
Publication Date:
June 11, 1998
Filing Date:
October 21, 1997
Export Citation:
Assignee:
SHOWA DENKO K.K. (13-9, Shiba Daimon 1-chome Minato-ku, Tokyo 105, JP)
Echigo, Takashi (Central Research Laboratory, Showa Denko K.K. 1-1, Oonodai 1-chome, Midori-k, Chiba-shi Chiba 267, JP)
Ohno, Ritsuko (Analytical Instrument Dept. Shoko Co. Ltd, Yoshizawa Building 2F, 31-7, Shinbashi 4-chom, Minato-ku Tokyo 105, JP)
Echigo, Takashi (Central Research Laboratory, Showa Denko K.K. 1-1, Oonodai 1-chome, Midori-k, Chiba-shi Chiba 267, JP)
Ohno, Ritsuko (Analytical Instrument Dept. Shoko Co. Ltd, Yoshizawa Building 2F, 31-7, Shinbashi 4-chom, Minato-ku Tokyo 105, JP)
International Classes:
B27K3/02; B27K3/00; B27K3/34; B27K3/52; B27K7/00; C08H6/00; C12N9/02; C12N9/96; (IPC1-7): C12N9/02
Attorney, Agent or Firm:
Ohie, Kunihisa (Ohie Patent Office, Horiguchi No. 2 Building 7F 2-6,
Nihonbashi-Ningyocho 2-chom, Chuo-ku Tokyo 103, JP)
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