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:
Apr. 20, 2004
Filed:
Jun. 09, 2000
Applicant:
Inventors:
Assignee:
Yamaha Corporation, Shizuoka-ken, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08L 9/702 ; C08K 5/13 ; C08G 1/800 ; C08H 5/02 ;
U.S. Cl.
CPC ...
C08L 9/702 ; C08K 5/13 ; C08G 1/800 ; C08H 5/02 ;
Abstract
The present invention relates a method for manufacturing ligneous material, characterized in comprising the steps of acetylating wood elements selected from among wood pieces crushed from lumber, thin wood plates peeled from lumber, and wood fiber obtained by means of defibrating lumber, such that the degree of acetylation (weight percent gain) is 7% or greater, and preferably 7 to 18%; and binding the resultant aceylated wood elements, using a binder containing polyisocyanate. Thereby, it is possible to provide inexpensive ligneous material which exhibits only minor dimensional changes from moisture, wherein only a small amount of formaldehyde is released.