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. 02, 1999
Filed:
May. 19, 1993
Applicant:
Inventors:
Ted M McVay, Stone Mountain, GA (US);
Gene F Baxter, Lithonia, GA (US);
Frederick C Dupre, Jr, Atlanta, GA (US);
Assignee:
Georgia-Pacific Resins, Inc., Atlanta, GA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08K / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
524 74 ; 524 13 ; 524 14 ; 524 15 ; 524 72 ; 524 73 ; 524596 ; 524702 ; 524841 ; 527403 ;
Abstract
A low molecular weight lignin fraction having a pre-selected molecular weight range prepared from lignin solution by ultrafiltration. The invention also relates to phenol-formaldehyde resin modified by the lignin fraction, adhesive comprising the modified resin, and a method for producing the lignin fraction and the resin.