Inventors:
Matthew T. Scholz - Woodbury MN
Steven S. Kantner - St. Paul MN
Kristen L. Comstock - St. Paul MN
Christopher J. Brown - New Brighton MN
Assignee:
3M Innovative Properties Company - St. Paul MN
International Classification:
C08J 303
US Classification:
524591, 128849, 128850, 424 7802, 424 7803, 424 7837, 427 21, 524839, 524840, 528 71
Abstract:
A polyurethane dispersion and method of making are provided. The dispersion is stable in an alcohol-water mixture. The dispersion is a reaction product of: (i) at least one oligomeric polyactive hydrogen compound, wherein said compound is an alkyl, aryl, or aralkyl structure optionally substituted in and/or on the chain by N, O, S and combinations thereof, and wherein the compound is insoluble in 50:50 weight percent of said alcohol-water mixture; (ii) at least one polyisocyanate, and (iii) at least one polyactive hydrogen compound soluble in the alcohol-water mixture selected from the group consisting of a compound containing an ionic group, a compound containing a moiety capable of forming an ionic group, a compound containing a polyester, polyether, or polycarbonate group having a ratio of 5 or less carbon atoms for each oxygen atom, and mixtures thereof; and (b) at least one polyfunctional chain extender.