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US 11,898,054 B2Granted
Actinic radiation-curable urethane/urea-containing aerospace coatings and sealants
AssigneePRC-DeSoto International, Inc.
InventorsBruce Virnelson, Chandra Rao, Renhe Lin
Life of this patent
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Abstract
Actinic radiation-curable compositions containing polythiols and urethane/urea-containing polyalkenyl prepolymers that can be used for aerospace coatings and sealants. The coatings can be applied to surfaces and rapidly cured.
Claims35
A composition comprising:
- (a) from 5 wt % to 25 wt % of a polythiol, wherein the polythiol comprises:
- a thiol-terminated urethane-containing prepolymer;
- a thiol-terminated urea-containing prepolymer;
- or
- a combination thereof;
- and
- (b) from 35 wt % to 75 wt % of a polyalkenyl, wherein the polyalkenyl comprises:
- a polyalkenyl-terminated urethane-containing prepolymer;
- a polyalkenyl-terminated urea-containing prepolymer;
- or
- a combination thereof and
- (c) from 15 wt % to 35 wt % of a solvent,
- wherein wt % is based on the total weight of the composition.
10 more elements
Dependencies are inferred from the claim text.