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:
Mar. 02, 1976
Filed:
Oct. 03, 1974
Applicant:
Inventors:
John S Babiec, Jr, Orange, CT (US);
Wilhelm J Schnabel, Branford, CT (US);
Assignee:
Olin Corporation, New Haven, CT (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
2604 / ; 2604 / ;
Abstract
A process for the production of methylene-bridged diaryl isocyanates by the reaction of .alpha.-halomethyl aromatic compounds with aromatic isocyanates in the presence of a catalyst. The catalyst comprises a metal salt of an aliphatic or cycloaliphatic organic acid where the metal is zinc, cadmium or mercury. Methylene-bridged diaryl isocyanates are suitably used in the production of polyurethane elastomers and foams.
Babiec, Jr, John. (1976). Process for the preparation of methylene-bridged diaryl isocyanates (U.S. Patent No. 3941822). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/3941822
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile