摘要:
Provided is a non-electroconductive flux capable of enhancing productivity and impact resistance of a connected structure to be obtained and suppressing occurrence of solder flash. The non-electroconductive flux according to the present invention contains an epoxy compound, an acid anhydride curing agent, and an organophosphorus compound.
摘要:
Embodiments of this invention are directed to bio-based epoxy compositions, and method of their preparation and use. Other embodiments are directed to cured bio-based epoxies, and manufactured articles having bio-based epoxy coatings, adhesives, or composites.
摘要:
This invention outlines a method for synthesizing a blended resin system in a one pot reaction that may utilize, for example, bio-based anhydrosugars such as isosorbide as a principle component to produce isosorbide dimethacrylate and other monomeric materials for thermosetting applications. This invention establishes a one-pot procedure for reacting a hydroxy group containing compound with methacrylic anhydride in the first step and using the by-product methacrylic acid to react with glycidyl ethers to form additional methacrylate compounds in the second step. This methodology can be formulated to produce a wide array of resin systems that have controlled ratios of hydroxy group containing compound/cross-linker/reactive diluent. Additionally, the novel resin systems may be partially to fully bio-based, promoting global sustainability and reducing costs, and when free radically polymerized have properties that meet or exceed their petroleum derived counterparts.
摘要:
Provided is an encapsulation method not causing molding failures such as filling failures and flow marks when collectively encapsulating a large-area silicon wafer or substrate with a resin composition. Specifically, provided is a method for encapsulating a semiconductor element-mounted base material, using a curable epoxy resin composition containing: an epoxy resin (A), a curing agent (B), a pre-gelatinizing agent (C) and a filler (D). The semiconductor element-mounted base material is collectively encapsulated under conditions of (a) molding method: compression molding, (b) molding temperature: 100 to 175° C., (c) molding period: 2 to 20 min and (d) molding pressure: 50 to 350 kN.
摘要:
A resin composition for transparent substrates comprises an epoxy resin (A) and a curing agent (B), wherein the curing agent (B) comprises a cyclohexane tricarboxylic anhydride.
摘要:
Fatty acid polyester derivatives of polyglycosides formed from a polyol having between 2 and 10 hydroxy functions, the 2 hydroxy functions or at least 2 of these hydroxy functions being bound to the anomeric carbon of a reducing carbohydrate that is identical or different for each hydroxy group and selected from the monosaccharides and disaccharides, in which at least one of the other hydroxy groups of the monosaccharide or the disaccharide is esterified by a lipid derivative bearing at least one double bond optionally originating from a vegetable or animal oil, from a mixture of vegetable or animal oils, the double bond or the at least one of the double bonds of the lipid derivative being functionalized by a group selected from the epoxy, amine, alcohol and acid groups, and use thereof in particular in reaction formulations for the production of polymer materials.
摘要:
Disclosed are organic, UV resistant epoxy resins derived largely from vegetable oil. More specifically, the present invention provides a virtually non-toxic, hypoallergenic UV resistant resin that gives off substantially no VOCs or disagreeable odors. The composition comprises a vegetable oil-based polyfunctional carboxylic acid, a cycloaliphatic anhydride, and an epoxy compound either of bicyclic difunctional epoxy resin, epoxidized vegetable oil or epoxidized polymer chains. The composition further comprises a catalyst and a wetting agent. In its cured state the material is leather like and exhibits high tensile strength as well as unusually high, totally reversible elongation. In an alternative embodiment, the resin comprises a cyclic anhydride. With increased amounts of cyclic anhydride, increased heat distortion temperature is exhibited while maintaining a high reversible elongation and high tensile strength In an additional alternative, an increased amount of Chromium III Octoate is used and in another alternative Phosphoric Acid.
摘要:
A fluxing-encapsulant material and method of use thereof in a thermal compression bonding (TCB) process is described. In an embodiment, the TCB process includes ramping the bond head to 250° C.-300° C. at a ramp rate of 50° C./second-100° C./second. In an embodiment, the fluxing-encapsulant material comprising one or more epoxy resins having an epoxy equivalent weight (EEW) of 150-1,000, a curing agent, and a fluxing agent having a mono-carboxylic acid or di-carboxylic acid and a pKa of 4-5.
摘要:
There is provided a composition for functioning as an effective additive for an epoxy resin that is a solid at room temperature and has a high storage stability, and a method thereof. The composition of the present invention is a basic silane coupling agent organic carboxylate composition obtained by first synthesizing an organic carboxylate of a basic silane coupling agent by reacting a basic silane coupling agent and an organic carboxylic acid, and subsequently heating and mixing the organic carboxylate of the basic silane coupling agent with a compound exhibiting a good affinity for the basic silane coupling agent or organic carboxylic acid and having a softening point or melting point of 40° C. or greater.
摘要:
The present invention relates to a transparent powder coating dispersion comprising a solid, pulverulent component A and an aqueous component B, component A being a powder coating material comprising a) at least one epoxy-containing binder having a content of from 30 to 45%, preferably from 30 to 35%, by weight of glycidyl-containing monomers, with or without a content of vinylaromatic compounds, preferably styrene, b) tris(alkoxycarbonylamino)triazine and polycarboxylic acids, preferably straight-chain aliphatic dicarboxylic acids and/or carboxy-functional polyesters, as crosslinking agents, component B being an aqueous dispersion comprising a) at least one nonionic thickener.