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:
Jul. 25, 1978
Filed:
Sep. 08, 1975
Applicant:
Inventors:
Armand B Pepperman, Jr, Metairie, LA (US);
Donald J Daigle, New Orleans, LA (US);
Sidney L Vail, River Ridge, LA (US);
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
2605 / ; 2605 / ; 427382 ; 4273 / ; 428920 ; 428921 ;
Abstract
Tris(4-substitutedureidomethyl)phosphine oxides were prepared by the reaction of tris(hydroxymethyl)phosphine with substituted ureas. The phosphine oxides were used to impart flame retardancy to cellulosic materials. They were effective as flame retardants either alone or in combination with hydroxymethylphosphorus compounds or hydroxymethylnitrogen compounds.