A carbon dioxide gas barrier coating comprising clay dispersed in a polymer composition comprising EVOH, gas barrier materials such as laminate materials (20) including the coating (1) on a substrate (2), methods of enhancing the carbon dioxide barrier properties of materials using the coating, uses of the coating composition in enhancing the gas barrier properties of a substrate packages including the carbon dioxide barrier materials (20) and methods of protecting articles.

The invention relates to a method for producing a vessel closure for vessels comprising an opening that is to be closed by the vessel closure, an inner diameter of more than two cm and surrounds a polymer-based sealing element that is arranged in the vessel closure in such a manner that is sealingly rests on the opening of the vessel in the closed state. A polymer material becomes sufficiently free-flowing by warming and is applied to the vessel closure in the region of the sealing element that is to be produced, and optionally, is mechanically formed into the desired shape which it maintains after cooling. The invention also relates to a metal or plastic vessel closures for vessels for receiving drinks or food, and comprises a sealing insert, the material thereof being selected so that the migration of material components into the drink or food, that are a health risk, is prevented. The invention also relates to corresponding materials for said type of sealing inserts and to the use of specific polymers for producing the above-mentioned sealing inserts.

The use of a colloidal silica having a specific surface area greater than 300 m.sup.2/g in a gas barrier coating additionally comprising polyvinyl alcohol and/or ethylene vinyl alcohol copolymer and/or a silylated derivative thereof improves wet bond strength.

By using a surface-modified metal oxide particle material obtained by performing surface modification on a metal oxide particle having an average primary particle diameter of 3 nm or more and 10 nm or less with a surface-modifying material having at least a phenyl group and a group capable of undergoing a crosslinking reaction with a functional group in a silicone resin-forming component, the surface-modified metal oxide particle material which has high heat resistance and may further exhibit high transparency and gas barrier properties when used for a sealing material for optical semiconductor light emitting device, or the like is provided and a dispersion liquid, a silicone resin composition and a silicone resin composite each containing the surface-modified metal oxide particle material, as well as an optical semiconductor light emitting device, a light fitting, and a liquid crystal imaging device each using the silicone resin composite, are also provided.

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.

A packer unit to be used in an annular blowout preventer. The packer unit includes an elastomer body including a compound of a nitrile rubber base polymer having a polymer chain, and a quantity of fluorine atoms attached to the polymer chain. The compound includes between 50 and 60% of the nitrile elastomer, between 25 to 35% carbon black, and the rest includes other materials. The quantity of fluorine atoms comprises short-chain fluorocarbon chain molecules The quantity of fluorine atoms displaces at least an equal quantity of hydrogen atoms from the polymer chain when the elastomer body is fluorinated.

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);

##STR00001## wherein Ra represents C.sub.7-C.sub.20 alkyl, C.sub.6-C.sub.10 aryl, C.sub.4-C.sub.10 heteroaryl, wherein the heteroatoms are N, O and/or S, (C.sub.2-C.sub.6)-alkenylen-(C.sub.6-C.sub.10) aryl, C.sub.1-C.sub.6-alkylen-C.sub.6-C.sub.10-aryl, the aryl and heteroaryl radicals optionally being substituted by: hydroxyl, C.sub.1-C.sub.6-alkyl, C.sub.1-C.sub.6 alkoxyl, C.sub.6-C.sub.10 aryloxy, halogen, cyano, nitro, C.sub.6-C.sub.10-aryl, di(C.sub.1-C.sub.6)alkylamino, (C.sub.1-C.sub.6)alkylthio, C.sub.6-C.sub.10-arylthio, O, S, SO.sub.3H, SO.sub.2NR.sup.1R.sup.2, CO.sub.2R.sup.3, CONR.sup.1R.sup.2, NHCOR.sup.4, COC.sub.6-C.sub.10-aryl or a combination thereof, wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 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);

##STR00002## wherein each Rc can be the same or different and independently represents hydrogen, C.sub.1-C.sub.20 alkyl or C.sub.6-C.sub.10-aryl, (C.sub.2-C.sub.4) alkenylen (C.sub.6-C.sub.10) aryl, C.sub.1-C.sub.4-alkylen-C.sub.6-C.sub.10-aryl, the aryl radicals optionally being substituted by hydroxyl, C.sub.1-C.sub.4-alkyl, C.sub.1-C.sub.4 alkoxyl, C.sub.6-C.sub.10 aryloxy, Cl, cyano, C.sub.6-C.sub.10-aryl, or COC.sub.6-C.sub.10-aryl; Rd represents hydrogen, C.sub.1-30 alkyl, C.sub.6-C.sub.10-aryl or halogen; Re represents hydrogen, C.sub.1-30 alkyl, C.sub.6-C.sub.10-aryl or a halogen and can be on ortho (o) or meta (m) position to Rd; X can be O or NRf where Rf represents hydrogen, C.sub.1-C.sub.20 alkyl or phenyl; Y can be O or S; n is a number from 1 to 30; (c) a transition metal catalyst.

A gas barrier material comprising a polycarboxylic acid polymer, and containing 0.10 to 1.4% by weight of a monovalent metal element, at least not less than 5.0% by weight of a polyvalent metal element, and 0.01 to 3.0% by weight of a nitrogen element per the total weight of nitrogen and carbon. The gas barrier material exhibits excellent gas barrier property, excellent waterproof property after the bend working and excellent appearance on the surface of the coating.

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).

A coating composition comprising a polymer, such as a copolymer comprising alkylene monomers and unsaturated acid monomers, and at least one phyllosilicate, a product coated with said composition, a method of making said coating compositions and a method of making said coated products.