الفهرس 
C he mi cal resistanceOnly 14 pages are availabe for public view
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Abstract
(1000-5000) molecular weight dissolved in reactive monomer
usually styrene .Catalysts such as organic peroxides initiate curing of the resin .
Photo curing, by using of electromagnetic radiation has appeared to be an attractive alternative to
the use of peroxides. The main advantages offered by photo-curing appear to be very rapid cure ,
reduced energy requirements and the avoidance of peroxide catalyst. A number of vinyl monomers have
been photopolymerise with visible light by suitable photo-initiators .Light-curing polyesters have
been described in the patent literature.
In the present investigation an unsaturated polyester styrene, acrylic acid, methy methacrylate
and polyurethane prepolymer co-polymers was prepared with different compos itions and cured by MEK
peroxide for comparative reasons and then photoinitiator systems have been developed and tested
using light sources including fluorescent tubes , tungsten filament bulbs ,mercury tungsten lamp
and natural sunlight.
Physical and mechanical properties of the curable products was carried out ,the results indicates
that some of the radiation curable compositions of the present investigation are especia lly
useful as radiation curable coating compositions .