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:
May. 18, 2004
Filed:
Nov. 20, 2000
Applicant:
Inventor:
Zhi-Zhong Liang, Richmond Hill, CA;
Assignee:
Polyphalt Inc., Toronto, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F 3/12 ; C08L 1/00 ; C08L 9/500 ; C09D / ; C09J / ;
U.S. Cl.
CPC ...
B01F 3/12 ; C08L 1/00 ; C08L 9/500 ; C09D / ; C09J / ;
Abstract
Methods for making the stable dispersion of lignin components of black liquor in bitumen. Representative methods comprising converting an aqueous colloidal dispersion of lignin in spent pulping liquor to an anhydrous colloidal dispersion of lignin in a lubricating oil by mixing a lubricating oil with the spent pulping liquor, and dewatering the mixture so formed at an elevated temperature to form a cream-like paste compatible with bitumen, and mixing said anhydrous colloidal dispersion of lignin with bitumen.