Photocurable ethylenically unsaturated sulfide and polysulfide polymer compositions
First Claim
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1. A photocurable modified liquid sulfide or polysulfide polymer composition comprising a) a curing initiator consisting of a photoinitiator or a peroxide curing agent;
- and b) the reaction product of a hydroxy terminated sulfide or polysulfide oligomer having the formula;
space="preserve" listing-type="equation">HO--CH.sub.2 --CH.sub.2 --[S--(S).sub.x --CH.sub.2 CH.sub.2 ].sub.y --OHwherein x=0 to 1, y=1 to 100 and having a molecular weight from 1000 to 8000 with a photocurable ethylenically unsaturated compound in stoichiometric ratios from 0.3 to about 1.1 per hydroxyl group.
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Abstract
A photocurable composition comprising the reaction products of hydroxy terminated liquid sulfide or polysulfide oligomers with photocurable ethylenically unsaturated compounds. The products provide improved sealants for air and marine vehicles.
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Citations
17 Claims
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1. A photocurable modified liquid sulfide or polysulfide polymer composition comprising a) a curing initiator consisting of a photoinitiator or a peroxide curing agent;
- and b) the reaction product of a hydroxy terminated sulfide or polysulfide oligomer having the formula;
space="preserve" listing-type="equation">HO--CH.sub.2 --CH.sub.2 --[S--(S).sub.x --CH.sub.2 CH.sub.2 ].sub.y --OHwherein x=0 to 1, y=1 to 100 and having a molecular weight from 1000 to 8000 with a photocurable ethylenically unsaturated compound in stoichiometric ratios from 0.3 to about 1.1 per hydroxyl group. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
- and b) the reaction product of a hydroxy terminated sulfide or polysulfide oligomer having the formula;
Specification