Abstract:
Disclosed are methods for making a cured sealant. The methods include depositing an uncured sealant composition on a substrate and exposing the uncured sealant composition to actinic radiation to provide a cured sealant. The uncured sealant composition includes a thiol-terminated polythioether, a polyene comprising a polyvinyl ether and/or a polyallyl compound, and a hydroxy-functional vinyl ether. Related sealant compositions are also disclosed.
Abstract:
Metal ligand-containing prepolymers, compositions containing metal ligand-containing prepolymers, methods of synthesizing metal ligand-containing prepolymers and the use of metal ligand-containing prepolymers in aerospace sealant applications are disclosed. The metal ligand-containing prepolymers have metal ligands incorporated into the backbone of the prepolymer. Cured sealant compositions comprising the metal ligand-containing prepolymers exhibit enhanced properties suitable for aerospace sealant applications.
Abstract:
Compositions comprising sulfur-containing polymers such as polythioethers and polysulfides, polyepoxides, and controlled-release amine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life and the rate of curing can be tailored for specific applications.
Abstract:
An adhesive composition which comprises a resin component comprising a compound (A) obtained by replacing all or part of the oxirane rings of an epoxy compound with thiirane rings or comprising the compound (A) and a compound (B) having oxirane rings in the molecule but containing no thiirane rings and which has a high adhesion strength, rapid curability, etc.; a sealing resin composition excellent in adhesion and tensile strength; a resin composition for coating materials which has a satisfactory pot life and is excellent in curability, etc.; a resin composition for electrical use which comes to have electrical insulating properties in a short time, has flame retardancy, and is excellent in curability and adhesion to metals; a resin composition satisfactory in rapid curability and high-temperature storage stability; a resin composition which contains a specific phosphorous ester and is excellent in adhesion strength, low-temperature curability, etc.; a one-pack quick-curing resin composition which contains a specific ketimine and is excellent in low-temperature curability and storage stability; and a resin composition containing a reactive diluent with which viscosity reduction can be attained without causing the thiirane-containing resin to crystallize and thus make the composition milk-white.
Abstract:
Compositions that are curable to polythioether polymers are provided, comprising: a) a dithiol monomer; b) a diene monomer; c) a radical cleaved photoinitiator; d) a peroxide; and e) an amine; where the peroxide and amine together are a peroxide-amine redox initiator. In some embodiments, the amine is a tertiary amine. In some embodiments, the amine is selected from the group consisting of dihydroxyethyl-p-toluidine, N,N-diisopropylethylamine, and N, N, N', N", N"-pentamethyl-diethylenetriamine. In some embodiments, the peroxide is selected from the group consisting of di-tert-butyl peroxide, methyl ethyl ketone peroxide, and benzoyl peroxide. In some embodiments, the composition may additionally comprise a polythiol monomer having three or more thiol groups.
Abstract:
Compositions comprising Michael acceptor-terminated sulfur-containing prepolymers, thiol-terminated sulfur-containing prepolymers, and e phosphine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life, cure rapidly following activation, and provide cured sealants having improved properties useful in aerospace sealant applications.
Abstract:
Compositions comprising sulfur-containing polymers such as polythioethers and polysulfides, polyepoxides, and controlled-release amine catalysts useful in aerospace sealant applications are disclosed. The compositions exhibit extended pot life and the rate of curing can be tailored for specific applications.
Abstract:
Disclosed are compositions that include: a) a thiol-terminated polymer; and b) a sulfur-containing ethylenically unsaturated silane. Related products, such as sealants, that include polymers derived from such compositions, are also disclosed.