Abstract:
The invention relates to use of an additive as oxygen barrier in a plastic material wherein (a) the plastic material is a polyolefin, a polyolefin copolymer or a polystyrene, and the additive is (b) and optionally (c): (b) a compound of formula (I); wherein Ra represents C7-C20 alkyl, C6-C10 aryl, C4-C10 heteroaryl, wherein the heteroatoms are N, O and/or S, (C2-C6)-alkenylen-(C6-C10) aryl, C1-C6-alkylen-C6-C10-aryl, the aryl and heteroaryl radicals optionally being substituted by: hydroxyl, C1-C6-alkyl, C1-C6 alkoxyl, C6-C10 aryloxy, halogen, cyano, nitro, C6-C10-aryl, di(C1-C6)alkylamino, (C1-C6)alkylthio, C6-C10-arylthio, ═O, ═S, SO3H, SO2NR1R2, CO2R3, CONR1R2, NHCOR4, CO—C6-C10-aryl or a combination thereof, wherein R1, R2, R3, R4 are the same or different and independently represent hydrogen or Rb represents a group selected from the moieties of formula (II), (III), (IV), (V), (VI) and (VII); wherein each Rc can be the same or different and independently represents hydrogen, C1-C20 alkyl or C6-C10-aryl, (C2-C4) alkenylen (C6-C10) aryl, C1-C4-alkylen-C6-C10-aryl, the aryl radicals optionally being substituted by hydroxyl, C1-C4-alkyl, C1-C4 alkoxyl, C6-C10 aryloxy, Cl, cyano, C6-C10-aryl, or CO—C6-C10-aryl; Rd represents hydrogen, C1-30 alkyl, C6-C10-aryl or halogen; Re represents hydrogen, C1-30 alkyl, C6-C10-aryl or a halogen and can be on ortho (o) or meta (m) position to Rd; X can be O or N—Rf where Rf represents hydrogen, C1-C20 alkyl or phenyl; Y can be O or S; n is a number from 1 to 30; (c) a transition metal catalyst.
Abstract:
An object of the present invention is to provide a coated polypropylene-based molded article having an excellent gas barrier property. A coated polypropylene-based molded article according to the present invention includes a molded article formed of a polypropylene-based resin composition and a thin film formed on a surface of the molded article, the polypropylene-based resin composition includes a polypropylene-based resin (D) and a nucleating agent (C), the content of the nucleating agent (C) is from 0.05 to 0.5 parts by mass with respect to 100 parts by mass of the polypropylene-based resin (D).
Abstract:
The present application relates to a cured product and the use thereof. When the cured product, for example, is applied to a semiconductor device such as an LED or the like, the decrease in brightness may be minimized even upon the long-term use of the device, and since the cured product has excellent cracking resistance, the device having high long-term reliability may be provided. The cured product has excellent processability, workability, and adhesive properties or the like, and does not cause whitening and surface stickiness, etc. Further, the cured product exhibits excellent heat resistance at high temperature, gas barrier properties, etc. The cured product may be, for example, applied as an encapsulant or an adhesive material of a semiconductor device.
Abstract:
The present invention relates to a film for a tire inner liner, particularly to a film for a tire inner liner including: a base film including a copolymer or a mixture of polyamide-based resin and a polyether-based resin; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein the base film has a tensile recovery rate of 30% to 80%. The film for a tire inner liner of the present invention may exhibit an excellent gas barrier property with a thin thickness, and thus enables light weight of a tire and improvement in automobile mileage, and enables easier forming during a tire manufacturing process.
Abstract:
[Problem] To provide a composition for film formation comprising cellulose fibers, a layered inorganic compound, and a water-soluble polymer, which are each dispersed on nano level, a method for preparing a cellulose dispersion capable of forming a moisture-resistant film containing cellulose nanofibers, a gas-barrier laminate obtained by use of the dispersion, and a packaging material using the laminate. [Solution] A film-forming composition comprising at least cellulose fibers and a swollen inorganic compound is prepared. The method of preparing a cellulose dispersion comprises the steps of oxidizing cellulose, fibrillating the thus oxidized cellulose to prepare cellulose nanofibers, and adding a water-soluble polymer and inorganic particles to the dispersion containing the cellulose nanofibers.
Abstract:
A transparent article includes a continuous polyester matrix having at least one incompatible filler dispersed therein. The incompatible filler provides domains in the polyester matrix, each domain having a particular dimension, thus providing a range of dimensions for the domains in the article. To create haze, the dimensions are within the range of from about 380 nm to about 720 nm. Once the range of dimensions is determined, a light absorbent composition can be found which absorbs light at a range of wavelengths that at least substantially covers the range of dimensions of the domains. In doing so, it has been found that the haze of the article can be substantially masked. Method for producing the article and for masking the haze are also provided.
Abstract:
Described herein are functionalized graphene compositions that have gas, fluid, and/or vapor resistant properties. Also described are barrier elements based on the aforementioned compositions. Also described is a barrier device that incorporates the barrier element and further comprises a substrate and a protective coating, encompassing the barrier element.
Abstract:
The invention provides a compound of the formula: wherein Ar is selected from the group consisting of aryl, monosubstituted aryl and polysubstituted aryl, heteroaryl, monosubstituted heteroaryl and polysubstituted heteroaryl; Ar′ is selected from the group consisting of aryl, monosubstituted aryl and polysubstituted aryl, heteroaryl, monosubstituted heteroaryl and polysubstituted heteroaryl; R is an alkylene radical having 2-20 carbon atoms; and n=1-20. The compounds of the invention are used with polymer resins to enhance their gas barrier properties.
Abstract translation:本发明提供下式的化合物:其中Ar选自芳基,单取代的芳基和多取代的芳基,杂芳基,单取代的杂芳基和多取代杂芳基; Ar'选自芳基,单取代的芳基和多取代的芳基,杂芳基,单取代的杂芳基和多取代杂芳基; R是具有2-20个碳原子的亚烷基; n = 1-20。 本发明的化合物与聚合物树脂一起使用以增强其阻气性。
Abstract:
The present invention relates to a curable silicone composition comprising: (A) a diorganopolysiloxane having at least two alkenyl groups in a molecule, (B) at least two types of resinous organopolysiloxanes having different mass average molecular weights, (C) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, and (D) a hydrosilylation reaction catalyst. The curable silicone composition enables the production of an optical semiconductor device in which the marked viscosity elevation of the resulting composition can be inhibited, in which the fluidity and packing properties are outstanding and that has outstanding gas barrier properties when used as a sealant, and in which the device has outstanding initial optical output efficiency even when organopolysiloxane resin is blended in order to form cured product with moderate hardness and strength.
Abstract:
An object of the present invention is to provide a multilayered pipe having a layer comprising a resin composition containing EVOH, which is unlikely to exhibit the occurrence of cracking in the EVOH layer due to oxidative degeneration and has excellent gas barrier property even during long-term usage at high temperatures, and also to provide a resin composition for obtaining the multilayered pipe. The present invention relates to a resin composition containing 0.001 to 5 parts by mass of an antioxidant (B) and 0.00001 to 0.3 parts by mass of a conjugated polyene compound (C) having a molecular weight of 1000 or less, relative to 100 parts by mass of an ethylene-vinyl alcohol copolymer (A).