摘要 |
A mixt. of polyurethanes comprises a first polyurethane with at least two end gps., each comprising a terminal isocyanate and a polyether; a second polyurethane with at least two end gps., each comprising a terminal isocyanate and a non-function gp.; and a third polyurethane with at least two end gps., one comprising a terminal isocyanate and a polyether and the other a terminal isocyanate and a non-fuctional gp. An aq. compsn. pref. comprises 0.005-20 wt.% of the polyurethane mixture. Also claimed is a mixt. of polyurethanes comprises a polyurethane contg. two end gps., one of which comprises a terminal isocyanate and a polyether and the other of which comprises a terminal isocyanate and a non-functional gp. Pref., the polyether is an alkyl or aryl polyether alcohol, esp. polyethylene glycol methyl ether or polypropylene glycol methyl ether. The non-functional gp. is derived from 1-octa-decanol. The three polyurethanes are present in amts. of 8.3-25, 25-75 and 16.7-50 mole %, esp. 12.5-25, 25-62.5 and 25-90 mole %. |
申请人 |
ROHM AND HAAS CO., PHILADELPHIA, PA., US |
发明人 |
EISENHART, ERIC KARL, DOYLESTOWN, PENNSYLVANIA 18901, US;RANDOW, RODNEY LAMAR, JEFFERSONVILLE, PENNSYLVANIA 19403, US;HOWARD, PAUL RICHARD, TULSA, OKLAHOMA 74145, US;AVILES, RAFAEL GONZALES, HARLEYSVILLE, PENNSYLVANIA 19438, US |