| http://www.w3.org/ns/prov#value | - a) a mixture of photopolymerizable resins consisting essentially of at least two epoxy resins one of which polymerizes , said at least two epoxy resins including a first epoxy resin polymerizing at a slower rate and has a having a higher neat viscosity than at least one other epoxy resin present and the , said first epoxy resins are being present at a concentration in the mixture of from 5 to 25%
|
