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. 06, 1999
Filed:
Mar. 26, 1998
Applicant:
Inventor:
Gary Marlin, Morgantown, WV (US);
Assignee:
General Electric Company, Pittsfield, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F / ;
U.S. Cl.
CPC ...
558 78 ;
Abstract
A process for producing organo-phosphites of the formula ##STR1## wherein R.sup.1 and R.sup.2 are each 2,4-di-tert-butyl and R.sup.3 is hydrogen is provided. The process involves heating a mixture of a pentaerythritol bis-phosphorohalidite and a phenolic compound and applying a vacuum of at least about 10 inches of mercury wherein the temperature of the reaction mixture is maintained between about 30.degree. C. and about 140.degree. C. Conversions to the organic spiro bis-phosphite is at least twice that of the same process without a vacuum.