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:
Dec. 21, 1993
Filed:
Aug. 15, 1989
Applicant:
Inventor:
Christian Colombier, Lyons, FR;
Assignee:
Atochem, Puteaux, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528 28 ; 525474 ; 528 10 ; 528 33 ; 528 38 ;
Abstract
Novel high viscosity polyhydrosilazanes containing recurring structural units of the formula: ##STR1## are prepared by reacting a halosilane with ammonia and/or an amine, and then reacting the ammonolysate thus produced with a hydrazine compound.