摘要:
The aim of the invention is to provide polyester/primer/metallic coating composite films having good adherence of the metallic coating in dry and humid conditions. Said films also form a good gas barrier: oxygen permeability less than or equal to 0.8 cc/m2/d; water vapour permeability less than or equal to 0.3 g/m2/d. To this end, the invention concerns a composite film comprising a polyester substrate, at least one coating adhering on at least one of the faces of the substrate and at least one layer of primer for cross-linked adhesion between the substrate and the coating. Said primer comprises at least one acrylic and/or methacrylic polymer P1, at least one acrylic and/or methacrylic polymer P2 different from P1, at least one cross-linking agent, and, preferably, at least one polyester that is soluble or dispersible in water: —P1 having a gel content TG1>70% by dry weight with respect to P1; —P2 having a gel content TG2≤TG1 and ≤20% by dry weight, with respect to P2; —P1 having a surface-grafted free weak acid content≥0.8 in meq/g of polymer; —[P2]≤60% by weight on dry by weight in respect to P1+P2. The method for producing said film, the adhering primer, and the articles obtained using said film, also form part of the present invention.
摘要:
There is provided a semiconductor-bonding resin composition having excellent thermally conductive property and electrically conductive property and suitable for joining a power semiconductor element and an element support member. There are provided: a semiconductor-bonding resin composition containing (A) a bismaleimide resin including an aliphatic hydrocarbon group on a main chain, (B) a curing agent, (C) a filler containing electrically conductive particles having a specific gravity of 1.1 to 5.0, and (D) silver microparticles having an average particle size of 10 to 300 nm; a semiconductor-bonding sheet obtained using the semiconductor-bonding resin composition; and a semiconductor device including a semiconductor joined by the semiconductor-bonding sheet.
摘要:
The present invention provides a novel cyanate ester compound which has excellent solvent solubility and from which a hardened product having a low coefficiency of thermal expansion and excellent flame retardancy and heat resistance is obtained. The present invention is a cyanate ester compound obtained by cyanating a naphthol-dihydroxynaphthalene aralkyl resin or a dihydroxynaphthalene aralkyl resin.
摘要:
The present invention relates to CNT filled polymer composite system possessing a high thermal conductivity and high temperature stability so that it is a highly thermally conductive for use in 3D and 4D integration for joining device sub-laminate layers. The CNT/polymer composite also has a CTE close to that of Si, enabling a reduced wafer structural warping during high temperature processing cycling. The composition is tailored to be suitable for coating, curing and patterning by means conventionally known in the art.
摘要:
A resin composition which has low stress, and good adhesive property in high temperature and high moisture environments and which is useful in adhesive applications in low stress, high moisture sensitivity level electronic packages. Preferably, a flexible epoxy anhydride adduct modified solid bismaleimide and solid benzoxazine resin composition that can survive high temperature and high moisture conditions and maintain good adhesion strength and minimize the stress resulting from a coefficient of thermal expansion mismatch between a silicon die and a substrate which is Ball Grid Array solder mask or a smart card polyethylene terephthalate or silver or copper metal lead frame.
摘要:
A polymerizable composition comprising a benzoxazine compound and a catalyst is described. The polymerizable composition may be cured to produce compositions useful in coating, sealants, adhesive and many other applications.
摘要:
An anchoring adhesive includes effective amounts of an isocyanurate compound and a vinyl ester compound that react and cure to form a composition having high compressive strength, high tensile strength and low shrinkage. The anchoring adhesive can be used to firmly bond anchor pins to boreholes in concrete, steel, wood, and other substrates.
摘要:
A method for improving the cohesive strength at elevated temperature of a die attach adhesive formulation of a liquid curable resin, initiator, and filler, comprises adding to the adhesive formulation an aromatic bismaleimide resin powder that does not dissolve in the curable resin.
摘要:
There are provided a method for forming a polybenzimidazole coating on a surface of a substrate, and a method for forming a polybenzimidazole film. The method for forming a polybenzimidazole coating comprises the steps of: coating a solution containing a polybenzimidazole prepolymer onto a surface of a substrate; and heating the coated substrate to cyclize the prepolymer and thus to form a cured coating on the surface of the substrate. The method for forming a polybenzimidazole film comprises separating the cured coating, formed by the above method, from the substrate.
摘要:
In accordance with the present invention, there are provided adhesive formulations containing small amounts of bleed control agent, which render the invention compositions extremely resistant to resin bleed. Several different types of bleed control agents are contemplated for use in the practice of the present invention, e.g., cationic surfactants, tertiary amines, tertiary phosphines, amphoteric surfactants, polyfunctional compounds, and the like, as well as mixtures of any two or more thereof.