Curable polyepoxides from phosphoric acids
Abstract
Abstract THE PRODUCTION OF PHOSPHORUS CONTAINING POLYEPOXIDES IS DESCRIBED BY THE REACTION OF ORTHO-, PYRO, OR POLYPHOSPHORIC ACID FIRST WITH FROM 2 TO 40 MOLS OF ETHYLENE OXIDE, THEN WITH FROM 2 TO 6 MOLS OF AN EPIHALOHYDRIN, FOR EXAMPLE EPICHLOROHYDRIN OR 1-CHLORO-2,3-EPOXYPROPANE, FOLLOWED BY DEHYDROHALOGENATION WITH AN ALKALI, E.G. POTASSIUM OR SODIUM HYDROXIDE, TO GIVE THE REQUIRED POLYEPOXIDE. APART FROM EXAMPLES SHOWING THE PRODUCTION OF THREE OF THESE POLYEPOXIDES, EXAMPLES ARE ALSO GIVEN OF PROVIDING AN ANTISTATIC IMPREGNATION ON TEXTILE FABRICS OF POLYESTER MATERIAL BY COATING THESE FABRICS THROUGH IMMERSION IN AN IMPREGNATING BATH CONTAINING THE POLYEPOXIDE-OR AN IMMEDIATE PRECURSOR THEREOF IN THE PRESENCE OF AN ALKALI-AND A HARDENER CONSTITUTED BY A POLYGLYCOLDIAMINE AND THEN HARDENING BY TREATING THE COATED FABRIC AT A TEMPERATURE OF ABOUT 140 TO 150*C.
Inventors
- 👤 Richard Hochreuter
- 👤 Kurt Hofer
Bibliographic Details
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