the viscosity of the polyisocyanate the b side generally includes a source of polyamine the exemplified polyurea formula above includes two types of polyamines jeffamine u00ae d2000 and e 100 dedta albemarle co those skilled in the art routinely select appropriate combinations and types of polyamines to arrive at a desired set rate and flowability for example jeffamine u00ae d2000 enhances the hardness of the polyurea product while increasing the amount of chain extender e g e 100 dedta results in a softer less brittle formulation processing temperatures are 150 u00b0 f with 2000 psi spray pressure this material is sprayed on with a gusmer or glascraft spray machine a polyamine epoxide adduct was made by mixing 400 parts by weight pbw jeffamine u00ae d2000 with 100 pbw bis a epoxy bis a epoxy phenol 4 4 1 methyl ethyl lidnelidene bis the mixture was heated to 150 u00b0 f for one hour under agitation after one hour the temperature was brought to 200 u00b0 f for 20 minutes a vacuum of 20 u2033 of hg is pulled to remove any polyamines of low molecular weight a low viscosity polyamine epoxide adduct resulted which had an equivalent weight of 730 a second polyamine epoxide adduct was made by combining 300 pbw e 100 dedta diethyl toluene diamine and 100 pbw bis a epoxy the mixture was.