摘要:
Beschrieben wird eine mehrschichtige Folie aus a) wenigstens einer Schicht (i) aus Polyamid und b) wenigstens einer Schicht (ii) aus Polyethylen oder einem Ethylen-Copolymerisat, enthaltend feinteiliges Titandioxid mit einem Durchmesser der Primärpartikel des Titandioxids zwischen 5 und 30 nm, wobei c) das in der Einheit [µm x Gew.-%] angegebene über alle Titandioxid enthaltende Schichten (ii) summierte Multiplikationsprodukt aus der Dicke der jeweiligen Schicht (ii) und dem auf das Gesamtgewicht der jeweiligen Schicht (ii) bezogenen Anteil an Titandioxid im Bereich zwischen 5 und 200 liegt, sowie d) gegebenenfalls einer oder mehreren EVOH-haltigen Schichten. Ebenfalls beschrieben wird die Verwendung der erfindungsgemäßen Folie als Verpackungsmaterial von Lebensmitteln.
摘要:
An elastic block, which is adapted to be paved on an underlying base for absorbing impacts, includes a laminate composed of a powdery rubber-containing layer and a vulcanized rubber layer underlying the powdery rubber-containing layer, the powdery rubber-containing layer being a compression molded layer composed of a mixture comprising elastic chips having the particle size of 0.5 to 10 mm and a resin binder, the vulcanized rubber layer being a vulcanized molding of an unvulcanized rubber layer, wherein the elastic chips are fixedly bonded to one another with the resin binder and the powdery rubber-containing layer is adhered to the vulcanized rubber layer when the mixture layer and the unvulcanized rubber layer are subjected to pressurization and vulcanization.
摘要:
Beschrieben wird ein Verbundgebilde mit einer oder mehreren Polyurethanschichten, einer Trägerschicht, insbesondere einer textilen Trägerschicht, sowie einer gegebenenfalls zwischen diesen Schichten angeordneten Klebstoffschicht. Das Verbundgebilde ist dadurch gekennzeichnet, daß mindestens eine der Polyurethanschichten ein Polyurethan der Formel (I)[ O-R 1 -O-CO-NH-R 2 -NH-CO] n enthält, worin bedeuten: -O-R 1 -O- den Rest eines Polyols mit endständigen primären und/oder sekundären Hydroxyfunktionalitäten, R 1 und R 2 unabhängig voneinander einen organischen Rest, der aliphatische, cycloaliphatische, aromatische und/oder heterocyclische Gruppen umfaßt, und n eine ganze Zahl von 1 bis 50.000. Ferner wird ein Verfahren zur Herstellung solcher Verbundgebilde und die Verwendung derselben als Kunstleder beschrieben.
摘要:
A semiconductive conjugated copolymer comprises at least two chemically different monomer units which, when existing in their individual homopolymer forms, have different semiconductor bandgaps. The proportion of said at least two chemically different monomer units in the copolymer is selected to control the semiconductor bandgap of the copolymer so as to control the optical properties of the copolymer. The copolymer is formed in a manner enabling it to be laid down as a film without substantially affecting the luminescent characteristics of the copolymer and is stable at operational temperature. The semiconductor bandgap may be spatially modulated so as to increase the quantum efficiency of the copolymer when excited to luminescence, to select the wavelength of radiation emitted during luminescence or to select the refractive index of the copolymer.
摘要:
The invention relates to a pressure-sensitive surface-protecting film, especially for automotive paints, comprising a carrier layer and a pressure-sensitive layer on the basis of a cross-linked polyurethane. The inventive film is characterized in that the angle of loss tan δ of the polyurethane increases at room temperature in a frequency interval of from 10?-1 to 102¿ rad/sec or remains on the same level.
摘要:
The present invention provides coextruded or laminated films having at least one layer of a fluoropolymer homopolymer or copolymer, a layer of a cyclic olefin homopolymer or copolymer and an intermediate adhesive layer. Such films have a high moisture barrier property and are substantially transparent.
摘要:
Surface modified solid polyethylene and high density polyethylene products, together with compositions and methods for producing these products, are provided. Polymer coatings comprising vinyl, urethane, and/or epoxy are covalently grafted to polyethylene substrates. The grafted coatings optionally colorants, flame retardants, and the like, that impart desired improved properties to polyethylene substrates. Grafted substrates include, for example, boards, sheets, tubing, pipes and the like. The treated products are more fire resistant than untreated polyethylene and unlike untreated polyethylene, are also capable of retaining post-manufacturing paint, markings, or adhesives, as desired.
摘要:
The invention relates to a transparent, UV-stabilized, single or multi-layered thermoformable film which contains, as a principal constituent, a crystallizable thermoplastic, preferably polyethylene terephthalate, and at least one UV-stabilizer. The inventive films are characterized by having a good stretchability, thermoformability and good optical and mechanical properties. Said films are suited for outdoor uses just like shaped bodies made of the same.
摘要:
A breathable, elastic multilayered film including a core layer of a first elastomer and at least one filler and at least one skin layer of a second elastomer; wherein the first elastomer is a polyolefin and the second elastomer is selected from the group consisting of thermoplastic polyurethanes, polyetheramides, block copolymers, and combinations thereof. Alternatively, at least one support layer may be bonded to the multilayered film.