摘要:
The present invention is: a curable composition comprising a component (A) and a component (B) in a mass ratio (component (A):component (B)) of 100:0.3 to 100:40, the component (A) being a silane compound copolymer that is represented by a formula (a-1), and has a weight average molecular weight of 800 to 30,000, €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ(CHR 1 X 0 -D-SiO 3/2 ) m (R 2 SiO 3/2 ) n CHR 1 X 0 -D-SiZO 2/2 ) o (R 2 SiZO 2/2 ) p (CHR 1 X 0 -D-SiZ 2 O 1/2 ) q (R 2 SiZ 2 O 1/2 ) r €ƒ€ƒ€ƒ€ƒ€ƒ(a - 1) wherein R 1 is a hydrogen atom, etc., X 0 is a halogen atom, etc., D is a single bond, etc., R 2 is a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, etc., Z is a hydroxyl group, etc., m and n are independently a positive integer, and o, p, q, and r are independently 0 or a positive integer, and the component (B) being a silane coupling agent that includes a nitrogen atom in its molecule. With the invention, it is possible to provide: a curable composition that produces a cured product that exhibits excellent heat resistance, excellent transparency, and high adhesion; a cured product obtained by curing the curable composition; and a method for using the curable composition as an optical device adhesive, etc.
摘要:
A curable silicone composition which is composed of at least (A) an organopolysiloxane having at least two silicon atom-bonded alkenyl groups in each molecule, (B) an organopolysiloxane having at least two silicon atom-bonded hydrogen atoms in each molecule, (C) at least one fine powder that is selected from the group consisting of fine zinc oxide powders that are surface-coated with an oxide and/or hydroxide of at least one element that is selected from the group consisting of Al, Ag, Cu, Fe, Sb, Si, Sn, Ti, Zr and rare earth elements, fine zinc oxide powders that are surface-coated with an organosilicon compound having no alkenyl group, and fine powders of zinc carbonate hydrates, and (D) a catalyst for hydrosilylation reaction. This curable silicone composition has excellent storage stability, and is cured to form a cured product that is suppressed in yellowing due to thermal aging and that sufficiently suppresses discoloration of a silver electrode or silver plating of a substrate in an optical semiconductor device, said discoloration being caused by a sulfur-containing gas in the air
摘要:
A two-part curable liquid silicone rubber composition is composed of a first liquid composition and a second liquid composition, which are stored separately and yield upon mixing a silicone rubber-forming composition. The silicone rubber-forming composition comprises: (A) a diorganopolysiloxane having an average of at least 2 alkenyl groups in a molecule; (B) a silicon-bonded hydrogen atom-containing organopolysiloxane composed of (B-1) an organopolysiloxane having an average of not more than 2 silicon-bonded hydrogen atoms in a molecule only in side molecular chains and (B-2) an organopolysiloxane having 2 silicon-bonded hydrogen atoms only at both molecular terminals; (C) a calcium carbonate powder; and (D) a platinum-based catalyst. The two-part curable liquid silicone rubber composition provides a cured product with suppressed fluctuations of properties even if the mixing ratio of a first composition and a second composition is changed.
摘要:
The invention provides a two-pack curable polyorganosiloxane composition having an excellent rapid curing property, and methods for producing an adhered article using the compositions. The two-pack curable polyorganosiloxane composition consisting of a first component and a second component, the composition comprising: (A) an alkenyl group-containing polyorganosiloxane that contains two or more alkenyl groups in the molecule; (B) a polyorganohydrogensiloxane that has two or more hydrogen atoms bonded to a silicon atom in the molecule; and (C) a platinum group catalyst, wherein the ratio of the number of the hydrogen atoms bonded to silicon atoms in (B), H B , to the number of the alkenyl groups in (A), Vi A , is 0.5 to 10.0; the content of (C) is 0.5 to 2000 ppm in terms of a platinum group metal; the first component comprises (A) and (C); and the second component comprises (B).
摘要:
Provided is a novel surface protective film that can express sufficiently high antistatic property even without the use of any antistatic agent, can express sufficiently high wettability even without the use of any plasticizer, and is excellent in reworkability (light peelability). The surface protective film includes: a base material layer; and a pressure-sensitive adhesive layer, in which: the pressure-sensitive adhesive layer has a peeling electrification voltage of 0.7 kV or less; and a first wetting rate with respect to an acrylic plate in a surface of the pressure-sensitive adhesive layer, which is brought into contact with an adherend, is 5.0 cm 2 /sec or more.
摘要:
Provided in various embodiments are high viscosity, shear-thinning silicone compositions that can be pattern coated directly onto a substrate and silicone compositions having high-density particles suspended in an adhesive gel. The silicone compositions contain a thixotropic additive, such as a hydrogenated vegetable oil. The silicone compositions may be applied on a substrate for use in medical devices or wound dressings.
摘要:
La présente invention se rapporte à un ruban adhésif (1) en silicone destiné à des applications médicales, comprenant un matériau en feuille (12) à base de fibres intissées, enduit : - sur une face interne (12a) destinée à être au contact de la peau, d'une membrane barrière (14) adhérente au matériau en feuille, à base de polymère de silicone réticulé et d'une couche (16) de gel adhésif de silicone atraumatique et biocompatible, et - sur une face externe (12b), d'une couche (18) d'un polymère anti-adhérent et déperlant à l'eau à base d'un polymère de fluorosilicone ou de fluorocarbone.
摘要:
Provided is a novel surface protective film that can express sufficiently high wettability even when no plasticizer is used, can prevent the formation of a stop mark, and is excellent in reworkability. The surface protective film is a surface protective film, including: a base material layer; and a pressure-sensitive adhesive layer, in which: a gel fraction of the pressure-sensitive adhesive layer is 70% or more; and a first wetting rate with respect to an acrylic plate in a surface of the pressure-sensitive adhesive layer, which is brought into contact with an adherend, is 5.0 cm 2 /sec or more.
摘要:
A one or more component moisture cure Organosiloxane composition that has strength in an uncured state (commonly referred to in the industry as “green strength”) and its uses. The composition comprises an organopolysiloxane polymer having a viscosity of at least 1000 mPa·s at 25° C. and not less than two silicon-bonded hydroxyl groups and/or silicon bonded hydrolysable groups; a suitable catalyst; a cross-linker adapted to react with organopolysiloxane polymer when catalysed with the catalyst; and optionally one or more rheology modifiers and 0 to 10% by weight of the composition of one or more extenders or plasticisers but in particular the composition contains a precipitated calcium carbonate filler in an amount of from 50 to 70 weight % of the total composition.