Iowa State University Research Foundation Inc

Michael Dennis Zenner

Jason Shih-Hao Chen

Michael Richard Kessler

The present invention is directed to polyisocyanates and polyurethanes derived therefrom. In various embodiments, the present invention provides polyisocyanates, methods of making the polyisocyanates from fused bicyclic alcohols, polyurethanes, and methods of making the polyurethanes from the polyisocyanates.

Polyisocyanates from fused bicyclic polyols and polyurethanes therefrom

Various embodiments disclosed relate to polymers and methods of making the same. In various embodiments, the present invention provides a method of forming a polymer including subjecting a composition including a carboxylic acid having the structure (R&#x2014;O)&#x2014;Rto conditions sufficient to form a polymer having the structure R&#x2014;[O&#x2014;R(O&#x2014;R)&#x2014;O&#x2014;C(O)&#x2014;R'(O&#x2014;R)&#x2014;C(O)]&#x2014;O&#x2014;R(O&#x2014;R)&#x2014;O&#x2014;Ror a salt or ester thereof, wherein R, R&#x2032; R, R, R, R, z1, z2, and n are as defined herein. In various embodiments, the polymer is a tackifier, a viscosifier, or a combination thereof.

Polymers and methods of making the same

The present invention relates to tackifier compounds and methods of using the same. In various embodiments, the present invention provides a tackifier compound including independently substituted or unsubstituted fused rings A and B each independently chosen from (C-C)cycloalkyl and (C-C)heterocyclyl. Fused ring A is substituted with (R)and fused ring B is substituted with &#x2014;(OC(O)R'C(O)R). At each occurrence R&#x2032; is independently chosen from (C-C)alkanylene, (C-C)alkenylene, (C-C)alkynylene, C-C(arylene), and (C-C)heteroarylene, wherein R&#x2032; is unsubstituted or substituted. At each occurrence Ris independently selected from &#x2014;OH, &#x2014;OR, and &#x2014;OC(O)R&#x2032;C(O)R. At each occurrence Ris independently chosen from &#x2014;OH, &#x2014;OR, &#x2014;NH, &#x2014;NHR, and &#x2014;NR. At each occurrence Ris independently chosen from (C-C)alkanyl, (C-C)alkenyl, (C-C)alkynyl, C-C(aryl), and (C-C)heteroaryl, wherein Ris unsubstituted or substituted.

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Ames, IA, United States of America

Michael Dennis Zenner