Isocyanates and preparation thereof
Abstract
Abstract ORGANIC ISOCYANATES ARE PREPARED BY A PROCESS WHEREIN N-CHLOROCARBONYL ISOCYANATE IS REACTED WITH A COMPOUND CONTAINING HYDROXYL OR THIOL GROUPS. A PREFERRED EMBODIMENT OF THE INVENTION COMPRISES PRODUCING ORGANIC ISOCYANATES HAVING THE GENERAL FORMULA R-(X-CO-N=CO)N WHEREIN R REPRESENTS AN N-VALENT RADICAL WHICH MAY BE SATURATED OR UNSATURATED AND WHICH MAY BE SUBSTITUTED, X IS OXYGEN OR SULFUR AND N IS A POSITIVE INTEGER, PRODUCED BY REACTING N-CHLOROCARBONYL ISOCYANATE WITH COMPOUNDS OF THE GENERAL FORMULA R-(X-H)N WHEREIN R, X AND N ARE AS DEFINED ABOVE, PREFERABLY AT A TEMPERATURE OF FROM ABOUT-100*C. TO ABOUT 200*C. THE ISOCYANATES ARE USEFUL IN THE PRODUCTION OF SYNTHETIC RESINS ACCORDING TO KNOWS PROCEDURES.
Inventors
- 👤 Hermann Hagemann
Bibliographic Details
Claims Analysis
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