Back to results
US 5,407,972 AGranted
Photocurable ethylenically unsaturated sulfide and polysulfide polymer compositions
AssigneeSunrez Corporation
InventorsW. Novis Smith, Mark Livesay
Life of this patent
Estimating the term…
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.
Claims17
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:
- HO--CH.sub.2 --CH.sub.2 --[S--(S).sub.x --CH.sub.2 CH.sub.2 ].sub.y --OH
- wherein 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.
Dependencies are inferred from the claim text.