摘要:
The invention concerns a method which comprises irradiating at least one face of an article with UV radiation, causing the article to be photodegraded over a thickness of at least 1 nullm and contacting the irradiated face of the article with a coloring agent, so as to diffuse the coloring agent in the entire thickness of the photodegraded surface layer of the article. The invention is useful for optical and ophthalmologic articles.
摘要:
The present invention provides a layered composite, which includes the following layers: (I) a layer I composition including: (a) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA6, PA66, PA6/66 and mixtures thereof; (b) from 0 to 100 parts by weight of at least one polyamine-polyamide copolymer that includes the following monomer units: (null) from 0.5 to 25% by weight, based on the weight of the polyamine-polyamide copolymer, of at least one polyamine having at least 4 nitrogen atoms and having a number-average molar mass Mn of at least 146 g/mol, and (null) at least one polyamide-forming monomer selected from the group including lactam, null-aminocarboxylic acid, equimolar combination of diamine and dicarboxylic acid, and mixtures thereof; and (c) from 0 to 80 parts by weight of at least one polyamide selected from the group including PA11, PA12, PA612, PA1012, PA1212 and mixtures thereof, wherein, in the layer I, a total of the part by weight of (a), (b) and (c) is 100; wherein within an entirety of (a) and (b), at least 20 parts by weight of the entirety include monomer units selected from the group including caprolactam, combination of hexamethylenediamine/adipic acid, and mixtures thereof; and wherein within an entirety of (b) and (c), at least 20 parts by weight of the entirety include monomer units selected from the group including null-aminoundecanoic acid, laurolactam, combination of hexamethylenediamine/1,12-dodecanedioic acid, combination of 1,10-decanediamine/1,12-dodecanedioic acid, combination of 1,12-dodecanediamine/1,12-dodecanedioic acid, and mixtures thereof; and (II) a layer II composition which includes at least one ethylene-vinyl alcohol copolymer.
摘要:
An object of the present invention is to provide an aqueous resin composition and its uses, wherein the aqueous resin composition combines the blocking resistance and the frost damage resistance and thereby can secure the durability over a long period of time even under circumstances where a severe temperature cycle is present. As a means of achieving this object, the aqueous resin composition according to the present invention is an aqueous resin composition comprising an acrylic resin emulsion and a crosslinking agent as essential components, with the aqueous resin composition being characterized in that, when a coating film is formed from the aqueous resin composition, the formed coating film exhibits an elongation ratio (E (%)) that satisfies a specific relational expression along with the glass transition temperature (TgT (null C.)) of the acrylic resin in the emulsion.
摘要:
The present invention relates to new tie-layer materials for making (1) new multilayer structures formed from one or more ionomers and one or more new tie-layers including a (co) extrudable tie resin (CTR), and optionally a backing layer to form laminates, (2) new composite articles made from these laminates in combination with optional substrate materials, and (3) new methods of making composite articles from these laminates by shaping and subsequently contacting them with a substrate material.
摘要:
The present invention relates to a flexible sheet having a composite structure for stabilizing coatings, comprising a first layer of fiber material and a second layer of fiber material impregnated by a first and a second impregnating material, respectively, and a body layer set between said first layer and said second layer according to a general sandwich structure, where the body layer consists of a third material. The first and the second impregnating materials and the third material constituting the body layer are polymeric materials presenting a substantial affinity, so that the flexible sheet has a physically heterogeneous and chemically homogeneous structure.
摘要:
A photographic film with a polymeric acid-reacting neutralizing layer comprising a half ester of isobutylene/maleic anhydride copolymer is provided herein. This polymeric acid-reacting neutralizing layer is used to attenuate a photographic film's development process, which is effective under alkali conditions, by lowering the pH of the alkaline processing composition.
摘要:
A resin sealing method for semiconductors comprises molding a resin with a release film 1 interposed between a molding die 4 and a sealing surface of a semiconductor chip 2 having terminals 22 or electrodes in such a manner that the sealed semiconductor chip may have the tips of the terminals 22 or the electrodes exposed on the surface of the cured resin which has been in contact with the release film 1, wherein the release film 1 is a composite film comprising a base layer 11 and an auxiliary layer 12 having a lower compressive modulus than the base layer 11, and the release film is used with the auxiliary layer 12 facing the sealing surface of the semiconductor chip 2.
摘要:
A composite dielectric material comprising a resin resulting from a polyvinylbenzyl ether compound and a dielectric ceramic powder dispersed therein is useful in the high-frequency region. A composite magnetic material comprising a polyvinylbenzyl ether compound and a magnetic powder is also provided as well as a flame retardant material comprising a polyvinylbenzyl ether compound and a flame retardant. These materials may be used in the fabrication of substrates, prepreg sheets, coated metal foils, molded items, and metal foil-clad substrates.
摘要:
A photopolymerizable composition which is highly sensitive to light not only in the visible region but in long-wavelength regions including the near infrared region, is not sensitive to light in the ultraviolet region, and has excellent handling efficiency under day light fluorescent lamps, and a photopolymerizable lithographic printing plate, are presented. A photopolymerizable composition comprising the following components (A), (B) and (C), and a photopolymerizable lithographic printing plate comprising a support and, formed on a surface thereof, a layer of the photopolymerizable composition: (A) an ethylenically unsaturated compound; (B) a dye which has, as a basic structure, a structure having hetero atoms connected via a polymethine chain and which is selected from the group consisting of the following (B-1), (B-2), (B-3) and (B-4): (B-1) a dye having, on a polymethine chain, a substituent containing a chain ether bond which forms an oxonium cation or a chain thioether bond which forms a sulfonium cation, upon resonance in the dye molecule, (B-2) a dye having, on a polymethine chain, two substituents forming a cyclic ether bond which forms an oxonium cation or a cyclic thioether bond which forms a sulfonium cation, upon resonance in the dye molecule, (B-3) a dye having, on a polymethine chain, a substituent containing an amino-vinyl bond which forms an aminium cation upon resonance in the dye molecule, and (B-4) a dye having, on a polymethine chain or other basic structure, a substituent containing an acid anion group, its ester group or a base; and (C) a photopolymerization initiator.
摘要:
A coating for an exterior surface of an automotive vehicle body panel is provided including a first layer of an ionomer polymeric coating material with a transparent base which has been pigmented to a desired color and extruded, a second layer of transparent ionomer polymeric coating material which has been co-extruded with the first layer and a third layer of polymeric coating material co-extruded with the first layer opposite the second layer, the third layer being more opaque than the first layer.