摘要:
A container comprised of an inner aromatic polycarbonate layer, an outer aromatic polycarbonate layer, and an intermediate amorphous polyamide layer between the inner polycarbonate layer and the outer polycarbonate layer. The amorphous polyamide intermediate layer provides the container with enhanced processability, excellent gas barrier properties and hot fill capabilities.
摘要:
An improved asphalt composition is provided with the addition of a graft copolymer resin comprising a rubbery polymeric substrate and a rigid polymeric superstrate. A preferred graft copolymer resin is acrylonitrile-butadiene-styrene copolymer resin. Preferred compositions have increased temperature range performance and/or decreased penetration values as compared to the same compositions not containing the graft copolymer resins. The asphalt compositions may optionally contain a vulcanized rubber, preferably obtained from scrap tires.
摘要:
Multilayered structures comprising polycarbonate layers and functionalized polyamide layers exhibit adhesion to each other without the use of a tie layer. The multilayered structures are useful in containers requiring the combined properties of high impact strength and chemical resistance and/or oxygen barrier resistance.
摘要:
A process for continuously producing pipe by coating a particulate material with a gas curable resin, compacting the coated particulate material in an annular space, treating the compacted, coated particulate material with a curing gas to form a pipe having a porous wall structure, impregnating the porous walls of the pipe with an asphalt or resinous material, and, optionally, winding a reinforcing filament binder around the pipe.
摘要:
Melt spinnable liquid crystal aromatic polyesters which are optically anisotropic in the melt phase are provided. The polyester is a poly [(1-phenylethyl)-phenylene/phenylene terephthalate].
摘要:
Melt spinnable liquid crystal aromatic polyesters which are optically anisotropic in the melt phase are provided. The polyester is a poly [(1-phenylethylphenylene)/chlorophenylene terephthalate].
摘要:
Multilayered containers comprising polycarbonate layers and amorphous polyamide layers wherein the amorphous polyamides are modified and unmodified amorphous polyamides of high glass transition temperatures. The containers have improved stress craze/crack resistance and improved rewashing properties. The containers are useful for carbonated beverages and are rewashable and refillable at elevated temperatures.
摘要:
Foamed thermoplastic blends of Nylon 6,I/T and polycarbonate resin are provided which exhibit good chemical resistance. The foamed blends are useful for making foamed articles such as chemically resistant foamed sheet.
摘要:
An aqueous asphaltic emulsion wherein the asphaltic component is either a chemically-modified asphalt or an asphalt-elastomer blend, and the aqueous component contains water, a surfactant, and a high molecular weight, non-ionic, homopolymer of acrylamide. The emulsions find use as crack fillers for concrete or asphaltic roads and the like, or as coating compositions which can be sprayed on a building wall or the like as a waterproofing coating. The incorporation of the acrylamide ingredient into the composition ensures rapid and complete curing of other types of emulsions, and the emulsions possess physical properties and low-temperature flex properties which closely approximate those of the original asphaltic component.