Abstract:
Disclosed are terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.
Abstract:
Disclosed are polyurea compositions comprising the reaction products of a polyformal-isocyanate prepolymer and a curing agent comprising an amine. The compositions are useful as sealants in aerospace 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 terminal-modified difunctional sulfur-containing polymers that are the reaction products of a sulfur-containing diol, an aldehyde or a ketone, and a compound containing a functional group. Compositions comprising the terminal-modified difunctional sulfur-containing polymers useful as sealants are also disclosed.
Abstract:
Electrically conductive preformed compositions comprising sulfur-containing polymers in shaped form and the use of preformed compositions in shaped form to seal apertures are disclosed. The preformed compositions can be used to seal an aperture having EMI/RFI shielding effectiveness.
Abstract:
A coating comprising epoxy functional resin, corrosion resistant particles, and a multi-functional crosslinker are disclosed as are methods of using such a coating to coat at least a portion of a substrate and a substrate coated thereby.
Abstract:
The present invention is directed to a coating composition comprising a film-forming binder; and a corrosion inhibitor comprising at least one of morpholines, monosulfides, and/or piperazines. The present invention is also directed to coatings, coated metal substrates, multi-layered coated metal substrates, and methods of coating substrates.
Abstract:
The present invention is directed to a coated metal substrate comprising a metal substrate; and a coating applied over at least a portion of the metal substrate, wherein the coating comprises a film-forming binder; magnesium oxide; an aluminum compound and/or iron compound; and aluminum particles. The present invention also provides a curable film-forming coating composition comprising a film-forming binder; magnesium oxide; an aluminum and/or iron compound; and aluminum particles. Also disclosed are methods of coating a substrate.
Abstract:
Sealant dispensing cartridge assemblies including radially expandable collets are disclosed. A plunger head assembly includes a ram head attached to a plunger rod. As the plunger rod is advanced into the sealant cartridge, the ram head presses against a rear side of a movable plunger against an opposing force created by a sealant contained in the cartridge on a front side of the plunger. As the plunger rod is further advanced, the collet contacts the ram head and radially expands against the inner sidewall of the plunger. The resulting radial force presses the sidewall of the plunger against the inner surface of the cartridge to thereby reduce or prevent unwanted leakage of the sealant around the plunger.
Abstract:
A mixing impeller (10) for mixing a sealant inside a cartridge (1) is disclosed. The mixing impeller (10) comprises a central hub (11) and at least two mixing arms (20) extending radially outward from the central hub (11). Each of the mixing arms (20) may include a leading edge (24), a trailing edge (26), and a wiping edge (28) extending circumferentially between a leading tip (25) of the leading edge (24) and a trailing edge transition (27) of the trailing edge (26). The wiping edge (28) may have an arc length defining a wiping edge (28) angle, the leading tip (25) may be circumferentially offset in a direction of rotation of the mixing impeller (10) defining a leading edge (24) angle to provide a forward swept configuration, and the wiping edge (28) angle may be greater than the leading edge (24) angle. A sealant cartridge (1) and mixing impeller (10) assembly is also disclosed.