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:
Apr. 06, 1976
Filed:
Jun. 21, 1973
Applicant:
Inventor:
William O Perry, Lake Jackson, TX (US);
Assignee:
The Dow Chemical Company, Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
260 / ; 252182 ; 260 / ; 260 / ; 260 49 ; 260 / ; 260 / ; 2606 / ; 2608 / ; 2608 / ;
Abstract
A process for the preparation of phenolic hydroxy ethers whereby an aromatic hydroxyl-containing compound is reacted with a vicinal epoxy-containing compound in the presence of a phosphonium salt of an acid, ester or acid ester of an element selected from carbon or phosphorus, and to precatalyzed epoxy resin compositions comprising an epoxy resin and a catalyst as defined above.