摘要:
A coating composition which is free from hexavalent chromium serving as binder and exhibits close adhesion equivalent to that of chromium phosphate primer even when baked at high temperature for a long time; and an amido resin composition improved in heat resistance. Specifically, a coating composition comprising (A) an amido-containing high molecular compound which either bears amido groups or is to bear amido groups and (B) an antioxidant which can inhibit the oxidation of the amido groups, characterized in that the amido-containing high molecular compound (A) is an amido polymer (a1) which bears amido groups and aromatic rings and/or an amido polymer precursor (a2) which can be converted into the amido polymer (a1) through baking in the application of the coating composition and that the amount of the antioxidant (B) is 0.1 to 20 % by mass based on the total amount of the components (A) and (B).
摘要:
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.
摘要:
A multi-component composite coating is provided which includes: (a) an elastomeric basecoat formed from a curable basecoat composition deposited upon a surface of a substrate; and (b) a topcoat applied over the basecoat, the topcoat being different from the basecoat and being formed from a curable topcoat composition comprising a polythioether material. The topcoat can have a higher tensile strength and percent elongation than the elastomeric basecoat such that when the composite coating is deformed, the basecoat can fracture before the topcoat to permit the topcoat to further deform while maintaining integrity of the topcoat. The composite coating is useful for inhibiting fuel leaks from an aerospace fuel storage container.
摘要:
Polymere Beschichtungssysteme, die ein oxidiertes Polyarylensulfid, insbesondere Polyarylensulfon oder teiloxidiertes Polyarylensulfid enthalten, weisen eine verbesserte Abriebbeständigkeit auf. Die Beschichtungssysteme enthalten vorzugsweise einen Kunststoff, ein Bindeharz und oxidiertes Polyarylensulfid und sind in einem flüssigen Träger suspendiert. Verwendet werden die Beschichtungssysteme zur Beschichtung der Oberfläche von metallischen und nichtmetallischen Substraten.
摘要:
Disclosed herein is a coated metal body having a metal base or a metal base having an undercoat of an inorganic and/or organic material and at least one coating layer formed on the metal base or the undercoat to a thickness of 5-1,000 µm with a poly(arylene thioether-ketone) resin coating material. The resin coating material is formed of 100 parts by weight of a poly(arylene thioether-ketone), 0-400 parts by weight of a thermoplastic resin and/or thermosetting resin compatible with the poly(arylene thioether-ketone) and 0-150 parts by weight, per 100 pars by weight of the sum of the resin components, of at least one filler selected from fibrous fillers, inorganic fillers and metallic fillers. The poly(arylene thioether-ketone) contains predominant recurring units of the formula wherein the -CO- and -S- are in the para position to each other, and has a melting point, Tm of 310-380°C, a melt crystallization temperature, Tmc (420°C/10 min) of at least 210°C, a residual melt crystallization enthalpy, ΔHmc (420°C/10 min) of at least 10 J/g, and a reduced viscosity of 0.2-2 dℓ/g as determined by viscosity measurement at 25°C and a polymer concentration of 0.5 g/dℓ in 98 percent by weight sulfuric acid.
摘要:
A novel polymer alloy coating is provided consisting essentially of polyphenylene sulfide and an amount of polyimide. The polyimide is produced by the crosslinking and curing of an acetylene terminated aromatic polyimide oligomer resin. The amount of polyimide utilized is sufficient to enhance the adhesiveness of the polyphenylene sulfide to a metal substrate without substantially changing the melt flow properties, chemical resistance and thermal stability of the polyphenylene sulfide. A polymer alloy resin composition is also provided for application to the metal substrate to produce the polymer alloy coating. The novel polymer alloy coating is particularly suitable for coating pipes, particularly pipe couplings for oil and gas well production pipes which are exposed to extreme temperatures, pressures and corrosive environments.
摘要:
Article en polycarbonate recouvert d'un revetement photo-polymerisable comprenant le produit de photo-reaction de (i) un polythiol, (ii) un polyene, (iii) un copolymere de polyester modifie par un silicone.
摘要:
The disclosure relates to an impact modified polyarylene sulfide composition containing epoxy functionalized styrenic block copolymer (e-SBC), for improved impact resistance with minimal impact on processability, wherein e-SBC is an epoxy functionalized unhydrogenated styrenic block copolymer (e-USBC), or an epoxy functionalized partially hydrogenated styrenic block copolymer (e-pHSBC), or an epoxy functionalized hydrogenated styrenic block copolymer (e-HSBC). The improved PPS composition can be used for making electronic components such as, but certainly not limited to, connectors, bobbins, coils, relays, etc.
摘要:
Composite materials are made by impregnating a non-conductive material with a conducting monomer to form a monomer-impregnated non-conductive material, and polymerizing the monomer-impregnated non-conductive material to form the composite material. The composite materials are used in medical devices and implants.
摘要:
The use of Michael addition curing chemistries in compositions comprising sulfur-containing polymers such as polythioethers and polysulfides useful in aerospace sealant applications are disclosed. Sulfur-containing adducts comprising terminal Michael acceptor groups are also disclosed. In particular, sulfur-containing polymers and sulfur containing Michael acceptor adducts having terminal 1-(ethylenesulfonyl)-n-(vinylsulfonyl)alkanol groups are disclosed.