摘要:
The invention aims at providing A light-shielding paste which contains a thermoplastic resin and an inorganic member as essential components; A light-shielding paste which contains a thermosetting resin and an inorganic member as essential components; A curable composition which contains, as essential components, (A) an organic compound comprising an organic main chain containing at least two carbon-carbon double bonds reactive with a SiH group in each molecule, (B) a silicon compound having at least two SiH groups in each molecule, (C) a hydrosilylation catalyst, (D) a silane coupling agent and/or an epoxy group-containing compound, (E) a silanol condensation catalyst, and (F) an inorganic member; The above curable composition which further contains (G) silica; The above curable composition which shows such a flow leveling property that when the composition is allowed to stand on a glass substrate inclined at an angle of 80 degrees at 100° C. for 1 hour, the flow-out distance is not longer than 2 cm; A light-shielding paste which comprises the above curable composition; or, A method of forming a light-shielding resin layer on a LED package having an aperture comprising a bottom and sidewalls and formed of a molding resin by a monolithic process with the respective ends of an external positive electrode and an external negative electrode being exposed at a predetermined distance on the aperture bottom which method comprises (1) applying a light-shielding paste to a substrate; (2) bringing the LED package aperture into close contact therewith; and (3) heating the LED package with the aperture facing upward; and thereby the light-shielding paste is allowed to spread along the package sidewalls alone. The curable composition of the invention is excellent in light-shielding ability and is highly resistant to light and, therefore, can be used as a light-shielding paste. Further, the curable composition of the invention is low in fluidity and, therefore, light-emitting diodes with the curing product formed on the LED package sidewalls alone can be obtained by using that curable composition. Furthermore, according to the method of light-shielding resin layer formation according to the invention, it is possible to efficiently apply a light-shielding paste to the LED package sidewalls alone for light-shielding resin layer formation, whereby the productivity is markedly improved.
摘要:
A curable composition providing a cured product having a silicon type interpenetrating polymer network, which comprises (A) a silsesquioxane ladder polymer, (B) a silicon compound having at least two SiH groups per molecule, (C) a silicon compound having at least two vinylsilyl groups per molecule and (D) a neutral platinum catalyst; and a process for producing a molded article comprising heating the curable composition under a controlled temperature for synchronously causing hydrolysis and condensation of the alkoxysilyl group and/or silanol group and hydrosilylation.
摘要:
The present invention provides a curable composition providing a curing product having excellent adhesive properties and high transparency, or a curing product having high toughness and transparency.A curable composition which contains (A) an organic compound containing at least two carbon-carbon double bonds reactive with a SiH group in each molecule, (B) a silicon compound having at least two SiH groups in each molecule, (C) a hydrosilylation catalyst, (D) a silane coupling agent and/or an epoxy group-containing compound, and (E) a silanol condensation catalyst. A light-emitting diode sealed with a curing product obtainable by curing said curable composition.
摘要:
The present invention provides a curable composition providing a curing product having excellent adhesive properties and high transparency, or a curing product having high toughness and transparency. A curable composition which contains (A) an organic compound containing at least two carbon-carbon double bonds reactive with a SiH group in each molecule, (B) a silicon compound having at least two SiH groups in each molecule, (C) a hydrosilylation catalyst, (D) a silane coupling agent and/or an epoxy group-containing compound, and (E) a silanol condensation catalyst. A light-emitting diode sealed with a curing product obtainable by curing said curable composition.
摘要:
The invention aims at a curing agent, curable compositions or compositions for optical materials, capable of providing for cured artifacts having laudable heat resistance, optical transparency, and light resistance; optical materials and methods for their production; and liquid crystal displays and LED's made by using the materials. A curing agent, which comprises at least two SiH groups, is obtainable by subjecting an aliphatic organic compound (α1) and an acyclic and/or cyclic polyorganosiloxane (β1) to hydrosilylation reaction. The curing agent is also obtainable by subjecting an organic compound (α2) and a cyclic polyorganosiloxane (β2) to hydrosilylation reaction.
摘要:
A light-shielding paste which contains a thermoplastic resin and an inorganic member as essential components or which contains a thermosetting resin and an inorganic member as essential components is provided. A curable composition and light-shielding paste comprising the composition are provided which contains, as essential components, (A) an organic compound comprising an organic main chain containing at least two carbon-carbon double bonds reactive with a SiH group in each molecule, (B) a silicon compound having at least two SiH groups in each molecule, (C) a hydrosilylation catalyst, (D) a silane coupling agent and/or an epoxy group-containing compound, (E) a silanol condensation catalyst, and (F) an inorganic member. The curable composition can further contain (G) silica. Also provided is a method of forming a light-shielding resin layer on a LED package having an aperture comprising a bottom and sidewalls. The curable composition is excellent in light-shielding ability.
摘要:
A curable composition comprising: component (A), which is an aliphatic organic compound including at least two carbon-carbon double bonds within one molecule, the at least two carbon-carbon double bonds having reactivity with an SiH group; component (B), which is a compound including at least two SiH groups within one molecule; and component (C), which is a hydrosilylation catalyst. The curable composition can be made into an optical material by being previously mixed so as to allow the carbon-carbon double bonds having reactivity with an SiH group to react with some or all of the SiH groups in the composition, thereby causing curing. There is provided a curable composition having a high heat-resistance, a low birefringence, a small coefficient of photoelasticity, a high optical transparency, and toughness; an optical material; a method for producing the same; and a liquid crystal display device incorporating the same.
摘要:
A silicon-containing polymer comprising a structural unit of the formula (1): ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and represent a monovalent organic group having 1 to 20 carbon atoms, and the benzene ring may have a substituent, which has good heat resistance.