Polyurethanes based on activatedlactam cross linkers
Abstract
Abstract LINEAR THERMOPLASTIC POLYADDITION PRODUCTS WHICH ARE SOLUBLE IN ORGANIC SOLVENTS ARE PROVIDED AND A PROCESS FOR THEIR PREPARATION IN WHICH (1) DIISOCYANATES ARE REACTED WITH (2) COMPOUNDS HAVING A MOLECULAR WEIGHT OF 400 TO ABOUT 8000 AND TWO TERMINAL HYDROXY GROUPS AND (3) THE REACTION PRODUCT OF (A) WATER AND/OR DIOLS HAVING A MOLECULAR WEIGHT BELOW ABOUT 400 AND/OR DIAMINES HAVING A MOLECULAR WEIGHT BELOW ABOUT 400 AND/OR HYDRAZINES HAVING A MOLECULAR WEIGHT BELOW ABOUT 400 AND (B) A LACTAM HAVING THE FORMULA R-X<(-CH2-CO-NH-(CH2)M-) WHEREIN X IS CH OR NITROGEN WITH THE PROVISO THAT WHEN X IS CH, R IS HYDROGEN AND M IS AN INTEGER OF FROM / TO 9 AND WHEN X IS NITROGEN, R IS AN ALIPHATIC RADICAL, AN ARALIPHATIC RADICAL OR A PYRIDINE RADICAL WHICH MAY ALSO BE SUBSTITUTED WITH A LOWER ALKYL RADICAL AND M IS 3; THE MOLAR RATIO OF CHAIN LENGTHENING AGENT (A) AND LACTAM (B) BEING FROM ABOUT 0.1:1 TO ABOUT 10:1. THE PRODUCTS ARE EMINENTLY SUITABLE FOR COATINGS, LACQUERS AND IMPREGNATIONS.
Inventors
- 👤 K Wagner
- 👤 G Mennicken
- 👤 K Noll
Bibliographic Details
Claims Analysis
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