摘要:
An object of the present invention is to provide a resin composition that can attain cured products having high flame retardancy, high heat resistance, a small coefficient of thermal expansion, and high drilling processability, a prepreg having the resin composition, a laminate and a metal foil clad laminate having the prepreg, and a printed circuit board having the resin composition. A resin composition, having at least an epoxy silicone resin (A) prepared by reacting a linear polysiloxane (a) having a carboxyl group with a cyclic epoxy compound (b) having an epoxy group such that the epoxy group of the cyclic epoxy compound (b) is 2 to 10 equivalents based on the carboxyl group of the linear polysiloxane (a), a cyanic acid ester compound (B) and/or a phenol resin (C), and an inorganic filler (D).
摘要:
The present invention relates to a preformed dental product comprising a hardenable composition, wherein the hardenable composition comprises a resin system, a filler system, and an initiator system; wherein the hardenable composition is in the form of a hardenable, self-supporting structure having a first shape and sufficient malleability to be reformed into a second shape at a temperature of about 15°C to 38°C.
摘要:
A heat-curable silicone resin-epoxy resin composition that is ideal as a premolded package for a high-brightness LED or solar cell. The composition contains (A) a heat-curable silicone resin, (B) a combination of a triazine derivative epoxy resin and an acid anhydride, or a prepolymer obtained by reaction of them, (C) an inorganic filler, and (D) a curing accelerator. The composition exhibits excellent curability, and yields a uniform cured product that displays excellent retention of heat resistance and light resistance over long periods of time, and suffers minimal yellowing.
摘要:
This invention provides a thermosetting resin composition for light reflection, which, after curing, can realize high reflectance in a range of visible light to near ultraviolet light, has excellent heat deterioration resistance and tablet moldability, and is less likely to cause burrs during transfer molding, and a process for producing the resin composition, and an optical semiconductor element mounting substrate and an optical semiconductor device using the resin composition. The heat curable resin composition for light reflection comprises a heat curable component and a white pigment and is characterized in that the length of burrs caused upon transfer molding under conditions of molding temperature of 100°C to 200°C, molding pressure of not more than 20MPa, and molding time of 60 to 120 sec is not more than 5mmabd the light reflectance after heat curing at a wavelength of 350 nm to 800nm is not less than 80%. The resin composition can be used for constructing the optical semiconductor element mounting substrate and the optical semiconductor device.
摘要:
This invention relates to a coating composition comprising (A) 100 weight parts of at least one epoxy resin; (B) 3-300 weight parts of at least one aminofunctional silicone resin; (C) up to 50 weight parts of at least one organic hardener; (D) up to 100 weight parts of at least one epoxyfunctional silicone resin; and (E) up to 10 weight parts of at least one cure accelerator. The coating compositions of this invention have acceptable moduli (>100MPa ), are tough, flexible, solvent and water resistant over a broad temperature range.