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US 8,138,273 B2Granted
Compositions including a polythioether
AssigneePRC-DeSoto International, Inc.
InventorsChandra B. Rao, John R. Gilmore
Life of this patent
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Abstract
Compositions, such as aerospace sealant, coating, and/or potting compositions are disclosed. The compositions include a polythioether and, in at least some cases, can be sprayable and fuel resistant even when substantially free of volatile organic compounds.
Claims26
A multi-component composition comprising:
- (a) a first component comprising a liquid isocyanate-functional polythioether-polyurethane and/or polythiourethane;
- and
- (b) a second component comprising a liquid amine/hydroxy-functional polythioether, wherein:
- the amine/hydroxy-functional polythioether contains one or more amine functional groups and one or more hydroxy functional groups;
- and
- the amine/hydroxy-functional polythioether comprises the reaction product of reactants comprising an epoxy-functional polythioether or mixture of epoxy-functional polythioethers and a polyamine or a mixture of polyamines;
- and wherein:
- the epoxy-functional polythioether comprises the reaction product of reactants comprising a dithiol or a mixture of dithiols and a reactant selected from a divinyl ether or a mixture of divinyl ethers;
- and a diolefin and a monoepoxy olefin.
6 more elements
Dependencies are inferred from the claim text.