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:
Feb. 28, 2012
Filed:
Aug. 11, 2010
Masood Akhtar, Middleton, WI (US);
William R. Kenealy, Madison, WI (US);
Eric G. Horn, Madison, WI (US);
Ross E. Swaney, Madison, WI (US);
Jerrold Winandy, Mazomanie, WI (US);
Masood Akhtar, Middleton, WI (US);
William R. Kenealy, Madison, WI (US);
Eric G. Horn, Madison, WI (US);
Ross E. Swaney, Madison, WI (US);
Jerrold Winandy, Mazomanie, WI (US);
Wisconsin Alumni Research Foundation, Madison, WI (US);
Biopulping International Inc., Madison, WI (US);
The United States of America as represented by the Secretary of Agriculture, Washington, DC (US);
Abstract
The present invention provides a method for producing an MDF board from pulp from a fibrous lignocellulose material using a treatment or pretreatment step which exposes the material to oxalic acid or oxalic acid derivatives (particularly dialkyl ester derivatives, particularly in the vapor phase). The treated wood is then subjected to a sugar extraction wash and refined using any one of the several pulping methods to produce a final pulp product. Once this is done the pulp is used to make MDF boards having improved water repellency properties.