| abstract |
A photo-curable composition comprising (a) an elastomeric component containing one or more novel, unsaturated, high molecular weight, endgroup-modified polymers; (b) a photopolymerization initiating system; optionally (c) one or more cross-linking agents; and optionally (d) other additives. Photo-curable compositions of the present invention exhibit faster cross-linking (that is, curing) rates (that is, lower minimum exposure times) than similar compositions containing no endgroup-modified polymers. Cured compositions of the present invention exhibit lower solvent swell, and similar or increased softness (that is, lower hardness as measured by Shore A hardness) when compared to cured compositions containing no unsaturated, high molecular weight, endgroup-modified polymers. |