Abstract: An improved masking film provides an adequate level of protection to relatively smooth surfaces by providing an adjustable and controlled level of adhesion between the masking film and the surface to be protected without the use of corona treatment or an adhesive under a variety of production and application conditions. The use of various copolymers, comonomers, and blends and percentages thereof, allows for control of the adhesion level produced between the improved masking film and the substrate surface to be protected. Using the improved masking film of the present invention, the masking film can be customized for a set of production conditions and desire application and will remain removably adhered to the substrate following a heat-loading process such as thermoforming, drape-forming or heat-bending.

Abstract: A curable resin composition comprising (1) a polymerizable vinyl monomer, (2) a polymerization initiator, (3) an aromatic amine and/or a pyridine derivative, (4) a &bgr;-diketone elate and/or a &bgr;-keto-ester, and (5) a phosphate.

Abstract: Compositions comprising a fluorochemical agent, a copolymer extender, and a blocked isocyanate extender and substrates treated with such compositions that possess high initial water repellency and laundry durable water repellency.

Abstract: A water-soluble polyvinyl alcohol coating agent for a film contains from 3 to 19 mol % of &agr;-olefin units, wherein each said &agr;-olefin unit contains up to 4 carbon atoms. The polyvinyl alcohol coating agent can be coated on a polyolefin, a polyester or a polyamide substrate film to form a laminate film. A method for producing the laminate film comprises applying an aqueous solution of the coating agent to the substrate film, followed by drying the coating.

Abstract: The present invention is to provide a polyamide laminated film comprising a resin layer A and a resin layer B formed on at least one surface of the resin layer A, the resin layer A being composed mainly of a m-xylylene group-containing polyamide polymer (a-1) which is one prepared from monomer components containing a xylylenediamine compound as a main diamine component and an &agr;,&ohgr;-aliphatic dicarboxylic acid having from 6 to 12 carbon atoms as a main dicarboxylic acid component, the xylylenediamine compound being m-xylylenediamine alone or a mixture of m-xylylenediamine and p-xylylenediamine, and the resin layer B being mainly composed of a mixed polymer (b-3) which is a mixture of from 99 to 80% by weight of an aliphatic polyamide (b-1) and from 1 to 20% by weight of an elastomer (b-2). The laminated film is good in a gas barrier property and also in a flexural fatigue resistance and a transparency.

Abstract: A multilayer film suitable for cook-in end use includes an outer layer that includes a homo- or co-polymer of propylene and, directly adhered to the outer layer, a layer that includes at least one of: (a) an ethylene/alkyl acrylate copolymer having a high melting point, (b) propylene/&agr;-olefin copolymer having a lower propylene mer content than the outer layer and having a high Vicat softening point, and (c) an ethylene/vinyl acetate copolymer with at least 15% vinyl acetate mer content. The film exhibits good seal strength and good adhesion between the two layers, even in areas where the film is sealed, even after the film is oriented, even when the film is subjected to the elevated temperatures involved in cook-in procedures, and even where the film is subjected to, e.g., grease from fatty foods. The film also can include one or more other layers including, for example, bulk layers, O2-barrier layers, and/or abuse layers.

Abstract: A multi-layer heat resistant film laminate with good optical properties, extended shelflife, and memory characteristics and its method of manufacture, the laminate having the generalized structure of (outside) A/B/C/D/C/B/E (inside), where A is an outer moisture barrier layer, B is an intermediate adhesive layer, C is a polyamide layer D is an oxygen barrier layer, and E is a sealant layer.

Abstract: Extrusion coating structure in which at least one layer is made of a polymer composition comprising a multimodal ethylene polymer, which contains from 80 to 100% by weight of ethylene repeating u nits and from 0 to 20% by weight of C3-C10 alpha-olefin repeating units, has a density of between 0.920 and 0.960 kg/m3, and which is a blend of at least two different ethylene polymers.

Abstract: The invention provides a resin composition for a fiber reinforced composite which can be used to produce a prepreg excellent in tackiness, drapability and windability around a mandrel, and also provides a prepreg in which reinforcing fibers are impregnated with a resin composition, and a fiber reinforced composite obtained from them. The resin composition includes a thermosetting resin and a thermoplastic resin with a weight average molecular weight of 200,000 to 5,000,000.

Abstract: A composite membrane and method for making the same, comprising a porous support and a crosslinked polyamide surface having polyalkylene oxide groups grafted thereto. The subject membrane provides improved resistance to fouling while offering excellent flux and salt passage performance. The subject method is easily adapted to commercial scale-up and does not require the use of chemical initiators.

Abstract: A longitudinally stretched multilayered film having good barrier properties is described. The film is prepared by a process comprising (a) preparing by coextrusion a laminate structured of, in sequence, a first polyamide layer, an EVOH layer, and a second polyamide layer, and (b) longitudinally stretching the laminate and (c) applying by vacuum vapor deposition to one of the surfaces of the stretched laminate an inorganic layer.

Abstract: A multi-layered laminate suitable for production of thermoformed packaging is disclosed. The laminate contains a polyamide-containing layer, a sealing layer and optionally an EVOH-containing layer and is characterized in that it contains water in an amount of 0.5 to 2.5 percent.

Abstract: A heat shrinkable film suitable for use in cook-in applications is provided which exhibits a transverse direction free shrink at 50° C. of less than about 2% and a transverse direction free shrink at 57° C. of at least about 3%. The film has at least two layers. The first layer includes an ethylene/vinyl alcohol copolymer and the film has a second layer directly adhered to the first layer, the second layer including at least one member selected from the group consisting of polyester, polyamide and polyurethane. Preferably, the desired shrink properties are attained by annealing the film under controlled conditions.

Abstract: The present invention relates to a heat sealable, unoriented multi-layer film consisting of a sequence of layers (I) comprising one or more plies on the outer side of the film, a sequence of layers (II) also comprising at least one ply, denoted the heat sealable layer, on the other outer side of the film, optionally together with a coupling sequence of layers (III), also of one or more plies, between the sequences of layers (I) and (II), wherein the multi-layer film is characterized in that the sequence of layers (I) contains at least one layer (i) of a linear alternating copolymer (1) of carbon monoxide and at least one ethylenically unsaturated olefin, optionally together with one or more layers (ii) containing polyamide, characterised in that the ratio between the thicknesses of the sequence of layers (I) and the total multi-layer film is no greater than 0.6 and no less than 0.

Abstract: The invention provides multilayered polymethylpentene-containing release films, processes for making the same and for their use in preparing articles comprises cured fiber reinforced epoxy, phenolic or polyacrylate compositions which file use as aerospace structural elements. The films have improved release properties when exposed to high temperatures. The films are non-oriented and multilayered comprising a polyamide layer, a polymethylpentene layer and an adhesive interlayer therebetween. The a polyamide layer has a heat stabilizer; and polyamide blend composed of from about 30% to about 80% of a nylon 6 polymer having a number average molecular weight of at least about 40,000; from about 10% to about 30% of a nylon 6,66 copolymer having a number average molecular weight of at least about 15,000; and from about 5% to about 40% of a nylon 6,12 copolymer having a number average molecular weight of at least about 10,000.

Abstract: A conductive polyamide resin composition containing 6-15 parts of conductive carbon black and 0.3-5 parts of secondary aromatic amines for 100 parts by weight of polyamide resins is excellent in formability and a tube manufactured using the composition is excellent in conductivity, heat-aging resistance and oxygenated-gasoline resistance as well.

Abstract: It is an object of the present invention to provide a highly durable photochromic film retaining a photochromic activity for a long time even when used under high temperture and high humidity conditions. A durable photochromic film comprising a coloring material layer containing a photochromic material and a phototransmissive deposition film laminated to said coloring material layer is disclosed.

Abstract: A single adhesive composition for use in bonding more than one class of rubber polymer to textiles, in particular nylon and polyester fabric. The composition comprises an aqueous mixture of: a) about 85 to about 90 weight % polychloroprene latex; b) about 2 to about 6 weight % of at least one prepolymer of resorcinol with formaldehyde; c) about 4 to about 8% by weight of at least one blocked diisocyanate compound; and d) sufficient water to adjust the solids content of the mixture to about 15 to about 40% by weight; wherein the percentage of solids add-on on fabric treated with the composition ranges between about 5 and about 20% based on the weight of the untreated fabric. The preferred blocked diisocyanate compound is caprolactam blocked methylene-bis-(4-phenylisocyanate). The end-products that are contemplated for the present invention include, but are not limited to, diaphragms, molded articles, V-belt covers, conveyor belts, bead wraps for tires, hose wrap, dodge couplings and the like.

Abstract: The present invention relates to multilayer film which is heat sealable over a broad temperature range. It is desirable to have a broad sealing temperature range to increase the production of packaging machines. The present invention also relates to multilayer film which provides easy opening and hermetic seals to packages. The film is made up of a core layer comprising linear low density polyethylene (LLDPE) and at least one skin layer having a melting point of at least 10° C. below the core layer melting point.

Abstract: A clear, multilayer polymeric film that is desirable for thermoforming applications. The film in its various embodiments include two inner layers of nylon and/or a core layer of ethylene vinyl alcohol or ethylene vinyl alcohol copolymer sandwiched between the two inner nylon layers. The film also has an outer layer of a heat sealable polymer and may also have an outer layer of nylon. The film is coextruded, blown into a tubular shape, oriented, and cooled by the method of tubular water quenching. The film has various improved physical properties over the prior art, including properties of “memory”, clarity, gloss and low haze.

Abstract: A thermoplastic container or packaging material is given low oxygen permeability by coating with a cross-linked acrylate layer and a layer of oxygen barrier material deposited over the acrylate layer. Another acrylate layer may be deposited over the oxygen barrier. The oxygen barrier is selected from the group consisting of silicon oxide, aluminum oxide and metal. The acrylate layer may be formed from a photopolymerizable polyfunctional acrylate that is sufficiently low viscosity to be sprayed on the substrate or applied by dipping. Alternatively, the acrylate layer is a polymerization product of an acrylate monomer which is evaporated in a vacuum, condensed on the substrate and polymerized by irradiation by ultraviolet or an electron beam.

Abstract: An adhesive sheet (2) in which heat-conductive and pressure-sensitive adhesive layers (22, 23) which comprise a) a copolymer of a monomer mixture containing main monomers comprising as main component an alkyl (meth)acrylate carrying an alkyl group having from 2 to 14 carbon atoms on average and from 1 to 30% by weight, based on the above main monomers, of a polar monomer having a glass transition point, as a homo-polymer, of ° C. or lower; and b) from 10 to 300 parts by weight, per 100 parts by weight of the copolymer, of a heat-conductive filler are formed on both surfaces of a heat-conductive base material (21) is inserted between an electronic part (1) and a heat-radiating member (3) to thereby adhere and fix the heat-radiating member (3) to the electronic part (1) while providing a high heat-conductivity with the heat-conductive and pressure-sensitive adhesive layers (22, 23).

Abstract: A polymeric film is provided which comprises a core layer of polyamide and two outer layers of ethylene propylene copolymer, polypropylene, and blends thereof. Coextruded embodiments include intermediate adhesive layers. A preferred embodiment of the multilayer film exhibits a combination of good abuse resistance and oxygen barrier properties, as well as excellent optical properties and shrink properties. The differential in CO2 transmission and O2 transmission rates makes these films especially useful in cheese packaging applications.

Abstract: A heat-shrinkable backseamed casing film comprises a first layer, a second layer, and a third layer, with the first and third layers being outer layers and the second layer being between the first layer and the third layer. The first outer layer serves as an inside casing layer, and comprises polyolefin; the second layer comprises polyester and/or polyamide; the third layer serves as an outside casing layer and comprises polyolefin, polystyrene, and/or polyamide. The second layer has a thickness of at least about 5% of a total thickness of the heat-shrinkable casing film. Alternatively, the first layer comprises polyolefin and has a surface energy level of less than about 34 dynes/cm; the second layer comprises a polyamide having a melting point of at least 300° F.; and the third layer comprises polyolefin, polystyrene and/or polyamide. A package comprises a cooked meat product within the backseamed casing.

Abstract: Disclosed are an easy-cleavage shrink laminate film which is harmless to the environment, easy to tear and moderately shrinkable, and a bag made of the laminate film. The easy-cleavage shrink laminate film 22 has a basic, two-layered structure composed of an easy-cleavage shrink film 19 and a sealant film 21, and may optionally comprise an additional sealant film 21 and/or a substrate film 25 to have a multi-layered structure. The easy-cleavage shrink film 19 comprises from 40 to 85 parts by weight of Ny 6 and from 15 to 60 parts by weight of MXD 6, and this is drawn at an orientation ratio of not smaller than 2.8 times both in the MD direction and in the TD direction and thermally fixed at a heat-treating temperature falling between 120 and 195° C. to thereby have a degree of shrinkage of from 15 to 40% when it is put in hot water at 120° C. under pressure of about 2.0 kg/cm2 for 20 minutes.

Abstract: A laminating propylene/1-butene random copolymer composition comprising a propylene/1-butene random copolymer and a low-density polyethylene in a specified proportion. With respect to the propylene/1-butene random copolymer, the content of structural units derived from propylene, content of structural units derived from 1-butene, MFR, Mw/Mn and B-value as a parameter indicating the randomness of copolymer monomer chain distribution fall within specified ranges. With respect to the low-density polyethylene, the MFR and density fall within specified ranges. The invention also provides a composite film comprising a substrate film such as a crystalline polypropylene film and, laminated onto at least one side thereof, a resin layer of the above composition having a thickness of 2 to 200 &mgr;m. The above composition is excellent in laminate moldability and enables producing a composite film having excellent low-temperature sealing properties, blocking resistance and hot tack.

Abstract: An adhesive ethylene copolymer resin composition blend of a modified ethylene/&agr;-olefin copolymer obtained by graft-modifying an unmodified linear ethylene/&agr;-olefin copolymer comprising ethylene and an a-olefin of 3 to 20 carbon atoms with an unsaturated carboxylic acid or its derivative, or the unmodified ethylene/&agr;-olefin copolymer and the modified ethylene/&agr;-olefin copolymer and an olefin elastomer (F) The linear ethylene/&agr;-olefin copolymer being prepared by the use of an olefin polymerization catalyst including a Group IV transition metal compound (a) containing a ligand having cyclopentadienyl skeleton and an organoaluminum oxy-compound (b). The adhesive ethylene copolymer resin composition can be used as a layer to form a laminate with a layer of a polar material or a layer of a metal. The polar material layer can be a layer of an ethylene/vinyl alcohol copolymer, a layer of a polyamide or a layer of a polyester.

Abstract: Provided is a composite sheet for food containers which comprises (A) an aroma proof resin layer comprising a saturated polyester resin, a polycarbonate resin and a copolymer comprising three components of bisphenol A, diphenyl carbonate and 1,10-decanedicarboxylic acid or a mixture of at least two of these three resins, (B) a polyamide resin layer, (C) a water vapor barrier resin layer, (D) a gas barrier resin layer and (E) a thermoplastic support resin layer, these layers being laminated in succession in order of A-B-C-D-E. This composite sheet for food container has remarkable aroma proof and low-temperature impact resistance with having the performances of synthetic resin containers having gas barrier properties and capable of being subjected to high-temperature sterilization.

Abstract: A multiple layer structure comprising a skin layer composed of a polypropylene copolymer with styrene ethylene-butene styrene block copolymer within a range of 0-20% by weight skin layer, and, a radio frequency (“RF”) susceptible layer adhered to the skin layer. The RF layer has a first component of a propylene based polymer, a second component of a nonpropylene polyolefin, a third component of a radio frequency susceptible polymer, and a fourth component of a polymeric compatibilizing agent.