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:
Jan. 22, 1985
Filed:
Feb. 22, 1984
Applicant:
Inventors:
Jean-Marc Lalancette, Sherbrooke, CA;
Marcel Cossette, Sherbrooke, CA;
Pierre Delvaux, Sherbrooke, CA;
Assignee:
Societe Nationale de L'Amiante, Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ; C03B / ; C23C / ; C23C / ;
U.S. Cl.
CPC ...
427215 ; 106306 ; 162-3 ; 162 80 ; 162153 ; 423167 ; 427255 ; 428443 ; 501 95 ;
Abstract
There is disclosed an improved process for phosphating asbestos fibers by reacting phosphorus chlorides with asbestos fibers in a first reaction vessel heated to a temperature within the range of the boiling temperature of the selected phosphorus chloride at atmospheric pressure and 200.degree. C. above the boiling temperature of said phosphorus chloride, then the phosphated asbestos fibers are cured in a second chamber and purged of any volatile by-product formed during the phosphating step. The products obtained possess reduced haemolytic activity.