| abstract |
A hydroxy functional alkyl polyurea is disclosed having the formula: n n n n n n n n n n wherein R comprises the residue of an isocyanurate, biuret, allophonate, glycoluril, benzoguanamine, and/or polyetheramine; or R comprises the reaction product of isocyanate and alkanol amine, but the isocyanate is not HDI when the alkanol amine is diethanol amine or monomethanol amine and the isocyanate is not IPDI when the alkanol amine is monomethanol amine; wherein each R1 is independently a hydrogen, alkyl having at least 1 carbon, or a hydroxy functional alkyl having 2 or more carbons and at least one R1 is a hydroxy functional alkyl having 2 or more carbons; and n is 2-6. n Further disclosed is a coating comprising:n a. A film forming resin; and b. A hydroxy functional alkyl polyurea crosslinker having the formula: nn n n n n n n n n n n n wherein R2 is a substituted or unsubstituted C1 to C36 alkyl group, an aromatic group, the residue of an isocyanurate, biuret, allophanate, glycoluril, benzoguanamine and/or polyetheramine wherein each R1 is independently a hydrogen, and alkyl having at least 1 carbon, or a hydroxy functional alkyl having 2 or more carbons and at least one R1 is a hydroxy functional alkyl having 2 or more carbons; and n is 2-6. n n n n n Substrates coated at least in part with such a coating are also disclosed. |