increased vacuum values from 240 millibar to 50 millibar through this u201c solvent exchange u201d operation at least 97 and more often 100 of the methanol could be evaporated therefore the composition becomes 100 reactive more clearly the compositions contain both organic resins and modified particles which are reactive and preferably uv curable four parts of photoinitiator irgacure u00ae 184 in the present invention based on the weight of uv curable materials were homogeneously mixed into the produced composite materials to form the final formulation with respect to the produced examples 2 and 2a as seen from table 2 their compositions are almost the same except that the silane concentration in the composition of example 2 is 1 0 by weight while it is 10 in example 2a however unlike in neat silane systems the different silane contents have shown no significant difference in the viscosity between these two materials more importantly the viscosity of both materials is fairly stable two months after the materials were produced the viscosity changes for both materials are in the range of 2 8 10 weeks after the materials were produced the cured coating film from composition ii was further evaluated as shown in table 3 for comparison the neat ebecryl u00ae 1290 was formulated and used as the control sample approximately 0 5 0 6 mil films coatings were drawn down on parker bonderite 40 steel panels and on a leneta chart for the taber abrasion test the thickness of coatings films depend on the number of the drawing bar and the viscosity of the.