Cyclic urea derivatives and process for their manufacture
Abstract
Abstract NOVEL CYCLIC UREA DERIVATIVES CONTAINING SILICON ATOMS HAVE THE GENERAL FORMULA 1-R"'',3-R,4-R'',4-R"-1,3-DIAZA-4-SILACYCLOPENTAN-2-ONE WHEREIN R IS A HYDROCARBON RADICAL OPTIONALLY BEING INTERRUPTED BY OXYGEN ATOMS IN EITHER LINKAGES, R'' AND R" (SAME OR DIFFERENT) ARE HYDROCARBON RADICALS, HALOHYDROCARBON RADICALS, CYANOHYDROCARBON RADICALS, OR ALKOXY RADICALS, AND R"'' IS A HYDROCARBON RADICALS. THESE 2,5-DIAZA--3-SILACYCLOPENTANONES CAN BE PRODUCED, ACCORDING TO THE INVENTION, BY REACTING AN AMINOMETHYLALKOXYSILANE OF THE GENERAL FORMULA R"''-NH-CH2-SI(-R'')(-R")-O-X (R'', R" AND R"'' AS ABOVE; X=ALKYL) AT A TEMPERATURE BETWEEN 0 AND 250*C. WITH AN ISOCYANATE OF THE GENERAL FORMULA RNCO (R AS ABOVE) AND RECOVERING THE PRODUCT BY DISTILLATION UNDER REDUCING PRESSURE. THESE PRODUCTS ARE SUITABLE FOR PROMOTING THE ADHESION OF SYNTHETIC RESINS TO SILICEOUS SURFACES, FOR USE AS INTERMEDIATES FOR ORGANOPOLYSILOXANE RESINS, AND FOR USE AS CROSS-LINKING AGENTS IN WATER-REACTIVE ORGANOPOLYSILOXANE PREPARATIONS.
Inventors
- 👤 H Golitz
- 👤 I Goelitz
- 👤 R Merten
- 👤 W Noll
- 👤 W Simmler
Bibliographic Details
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