摘要:
A latent fluxing agent comprising a material which liberates phenol or a carboxylic acid containing compound when heated above 140° C. The latent fluxing agent may be incorporated into a thermoset resin, which includes an epoxy resin. The uncured epoxy resin, which includes the epoxy resin, the latent fluxing agent and an epoxy curing agent are useful as an underfill composition in a method for applying a chip die, having one or more solder balls, to a substrate. The method is used to produce an integrated circuit chip that includes a chip die having electrical contacts arranged in a predetermined pattern and capable of providing electrical engagement with a carrier substrate.
摘要:
The present invention provides a one-pack type epoxy resin composition comprising an epoxy resin having at least two epoxy groups in the molecule and a polyguanidine. The one-pack type epoxy resin composition has high storage stability, can be made into a film, is curable at relatively low temperatures, and has high adhesivity.
摘要:
A silica powder surface-treated with and epoxy compound having a plurality of epoxy groups, in which at least one epoxy group of the epoxy compound is ring-opened to bind to the surface of the silica powder and at least a portion of the remaining epoxy groups of the epoxy compound are bonded to amine compounds. The silica powder may be produced by the surface treatment of a silica powder with an epoxy compound and an amine compound successively or with both these compound simultaneously.
摘要:
A composition comprising an epoxy resin and a ketimine compound, wherein the epoxy resin is either (1) an epoxy resin having a content of an epoxy resin having no hydroxyl group in the molecule in a range of more than 90 mol % to 100 mol % or less, (2) an epoxy resin wherein hydroxyl groups are capped with an isocyanate group-containing compound, (3) an epoxy resin wherein hydroxyl groups are capped with an alkoxysilyl group-containing compound, or (4) an epoxy resin containing an alkoxysilyl group-containing compound which is capable of capping hydroxyl groups of the epoxy resin. When either of the those epoxy resins is used and also the ketimine compound having high steric hindrance is used, a one-pack epoxy resin composition having good curing property and particularly excellent storage stability can be provided.
摘要:
A curable composition useful for repairing worn surfaces on housings comprising an admixture of: (1) a mixture of (a) an one-component epoxy resin, (b) solvent and (c) reactive diluent, wherein said epoxy resin is present in a major amount in said mixture; (2) graphite powder; and (3) polytetrafluoroethylene powder.
摘要:
A polymer composition comprises at least one thermoplastic polymer selected from the group formed by polyetherimides and polysulphones and at least one epoxy resin modified by at least one aromatic polyamine. The epoxy resin is formed from at least one polyepoxide containing at least 2 epoxy groups in its molecule and the aromatic polyamine contains at least two primary amine groups in its molecule and preferably at least one alkyl substituent containing 1 to 12 carbon atoms located alpha to one of the amino groups. The molar ratio of the polyamine to the epoxy is such that, each amino group corresponds to 1.6 to 2.6 epoxy groups. The thermoplastic polymer content is preferably about 15% to 98% by weight with respect to the total weight of the polymer composition; the amount of epoxy resin modified by at least one aromatic polyamine is about 2% to 85% by weight with respect to the total weight of the polymer composition. These polymer compositions can be prepared in the molten state, without a solvent, at a temperature of about 100° C. to 250° C.
摘要:
Disclosed are a resin dispersion and a cationic electrodeposition coating composition including the same, in which the dried coating film of the electrodeposition paint is lead-free and has an epoxy-acrylic double-layered structure for displaying excellent properties, and in which an organic solvent content can be minimized. A resin dispersion of a cationic electrodeposition includes an aqueous dispersion prepared by the following processes. The resin dispersion includes a cationic electrodeposition resin, deionized water, an acid for neutralization, a reaction product of manganese phosphate and an acid diluted in an deionized water to 10%, and a cationic surfactant. The cationic electrodeposition resin can be prepared in the presence of an organic solvent from (a) a cationic electrodeposition synthetic resin produced by an epoxy-amino addition reaction (b) an acrylic cationic electrodeposition resin having an amino group (c) a fatty acid ester resin synthesized by an esterfication reaction of styrene-allylalcohol copolymer and fatty acid and (d) blocked polyisocyanatecuring agent. The cured film has an epoxy-acrylic double-layered structure to give a high functionality, for improving properties such as weather-resistance, yellowing resistance, etc.
摘要:
The invention provides polyepoxide-based adhesives containing cycloaliphatic-containing polyepoxide resin, aromatic polyepoxide resin, and 9,9-bis(3-methyl-4-aminophenyl)fluorene. The adhesives provide improved peel and shear strength.
摘要:
The invention is a reactive hot melt adhesive composition comprising a cationically polymerizable compound, on the average per molecule, having one or more cyclic ether groups such as epoxy groups, a phthalate diester compound expressed by the following formula (2) and a cationic photo-initiator: wherein in the formula (2), R5 indicates (ChH2hO)iH and R6 indicates (CkH2kO)lH or (CkH2kO)lCkH2k+1, provided that h, i, k and l each are an integer of 1 or more. The present invention provides a reactive hot melt adhesive, in which a curing reaction progresses under application of actinic radiation.
摘要:
A crystallized epoxy resin which is easy to blend with a hardener or the like is a crystallized product of an epoxy resin derived from 4,4′-dihydroxy-3,3′,5,5′-tetramethylbiphenyl and an epihalohydrin, and the ratio of an endotherm between 50° C. and 130° C. to an endotherm between 80° C. and 125° C., measured by raising the temperature at a rate of 10° C. per minute using a DSC device, is 1.03 or more.