total of at least two terminal u2014 nh 2 or u2014 oh or a combination of either totaling at least two the use of alkoxylated polyamines at least three terminal u2014 oh groups are present as included above produces polymers with tertiary cross linking when reacted with diisocyanates as opposed to the linear structures that result from diisocyanytes and alkoxylated primary amines another way to achieve teriary cross linking is to utilize a polyisocyante that has more than two isocyanate groups available for the urea urethane reaction quaternary alkoxy amines are produced from alkoxylated amines and contain at least two terminal u2014 oh groups such as the tomah q series and can be polymerized in the same manner as alkxylated amines another embodiment of the invention is the use of fatty ether polyamines or ethoxylated fatty ether amines fig2 describes the case in which the fatty moiety is an alkoxy group a typical example of an embodiment of the invention is to combine for example an ethoxylated amine with a polyisocyanate by varying the reactants various hardnesses and flexibilities can be achieved by varying the type of isocyanate used the speed of cure can be adjusted by changing the functionality of the alkyl containing component different properties can be achieved it is an object of the present invention to create a class of hydrophobic urethane and urea polymers with alkyl side chains pendant to the main polymer backbone it is another object of the present invention to provide a way to control cross linking in a hydrophobic.