Fluorinated polyurethanes as soil release agents
Abstract
Abstract M IS AN INTEGER FROM ABOUT 8 TO OVER 100. THE POLYURETHANES ARE EFFECTIVE SOIL RELEASE AGENTS FOR DURABLE PRESS FABRICS. I(NCO)2 IN WHICH RF IS A PERFLUOROALKYL GROUP OF 4-16 CARBON ATOMS, X=O OR S, R'' IS AN ORGANIC RADICAL OF 2-15 CARBON ATOMS WHICH MAY CONTAIN ONE OR MORE ETHER LINKAGES AND N=1-11, A=- OR 0, B=1 OR 2, A+B=2, AND I IS A DIVALENT ORGANIC GROUP FROM A DIISOCYANATE, R1CNH2N-A(OH)AXR''(OH)B IS A RESIDUE OF A FLUORINATED DIOL OF THE FORMULA -O-Z(-RF'')-O- IN THE RATIO OF FROM AT LEAST 2 TO ABOUT 24 FLUORINATED UNITS TO ONE NONFLUORINATED UNIT CONTAINING REPEATING OXYETHYLENE GROUPS, WHERE NH-I-NH-CO)(0-1))- -(O-Z(-RF'')-OOC-NH-I-NH-CO)-N, AND -(O-(CH2-CH2-O)M-(CO- FLUORINATED POLYURETHANES ARE DESCRIBED HAVING A CHEMICAL STRUCTURE MADE UP OF THE UNITS
Inventors
- 👤 J Gresham
Bibliographic Details
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