Patent ID: 7078475
Filing Date: 2006-07-18
Classification: C08G,C09D

Abstract:
1. A process for producing an elastomeric polyurea comprising the steps of: a) providing an isocyanate component in a first storage vessel; b) providing an amine component in a second storage vessel, wherein said amine component includes an alkyl-substituted isophorone diamine, characterized as comprising a mixture of the amines: in which the N,N′-di- substituted material is present in any amount between 90.00% and 99.99% by weight based upon the total weight of the mixture, and in which R may represent any pendant group selected from the group consisting of: methyl; ethyl; 1-propyl; 1-butyl; 1-pentyl; 4-methyl-2-pentyl; 2-propyl; 2-butyl; 2-methyl-1-propyl; and cyclohexyl, in combination with at least one other amine useful in polyurea manufacture; and c) mixing a portion of the isocyanate component contained in said first storage vessel with a portion of the amine component contained in the second storage vessel so as to form a polyurea composition, wherein the ratio of said isocyanate component to said amine component in the resultant polyurea is any ratio in the range of between 1.00:1.00 to 1.20:1.00.