3M Innovative Properties Company

Michael T Hayes

Chetan P Jariwala

Yongshang Lu

Walter E Partlo

Hydrophobic polyurethane polymers which may be useful in making synthetic leathers comprising at least two immediately consecutive repeating units according to Formula I:(&#x2014;OC(O)N&#x2014;)A-NC(O)O-L(M)-&#x2003;&#x2003;(I)wherein n is 1 or 2, A represents the residue of an organic di- or tri-isocyanate compound, L represents a hydrocarbon group that optionally contains one or more catenary or non-catenary hetero-atoms, and M represents an oligomer comprising 2-12 (meth)acrylate units. The polyurethane polymers may additionally comprise end group(s) according to the formula -L'M wherein L&#x2032; represents a hydrocarbon group that may contain one or more catenary or non-catenary hetero-atoms. In some embodiments, M is according to Formula III: wherein Q is hydrogen or methyl, p is an integer between 2 and 12 inclusive, and Z is a hydrocarbon group which may optionally be substituted.

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St. Anthony, MN, United States of America

Michael T Hayes