Abstract: The present invention is a curable organopolysiloxane composition containing (A) a compound shown by the following average composition formula (1), wherein R1 represents an aliphatic unsaturated group, R2 represents a monovalent hydrocarbon group, R3 represents an aliphatic hydrocarbon group, Ar represents an aryl group, and “n” and “m” represent positive numbers which satisfy n?1, m?1, and n+m?10, (B) a hydrogen atom-containing organic silicon compound having at least two silicon atom-bonded hydrogen atoms per one molecule while not having an aliphatic unsaturated group, and (C) a hydrosilylation catalyst which contains a platinum group metal. Thereby, there can be provided a curable organopolysiloxane composition which can give a cured product having high transparency, high refractive index, and excellent thermal shock resistance; an optical device sealing material; and an optical device.

Abstract: There is disclosed a silicone resin composition includes (A-1) a ladder structure-containing polyorganosiloxane having a ladder structure and having two or more alkenyl groups in one molecule, (B-1) a ladder structure-containing hydrogen polyorganosiloxane having a ladder structure and having hydrogen atoms that are bonded to two or more silicon atoms in one molecule, and/or (B-2) a hydrogen polyorganosiloxane having two or more hydrogen atoms that are bonded to silicon atoms in one molecule. As a result, there is provided the silicone resin composition as a light-emitting device protective material having a high transparency, heat resistance, light resistance and gas barrier.

Abstract: The present invention relates to a two-component sealant comprising a first part and a second part wherein a) the first part (X) comprises: (i) a polyalkyleneoxide polymer having one or more unsaturated end groups (ii) an addition reaction catalyst b) the second part (Y) comprises: (i) an organosiloxane comprising one or more Si—H groups. The present invention also relates to medical devices used in connection with the sealant, mixing devices for delivering and mixing the first part and the second part of the sealant, and methods for applying the sealant.

Abstract: One aspect of the present invention provides a polymer having repeating units represented by the formulas (1-1), (1-2) and (1-3) and weight-average molecular weight of from 3,000 to 500,000, as determined by GPC using tetrahydrofuran as a solvent, reduced to polystyrene. Another aspect of the present invention provides an adhesive composition comprising (A) the polymer, (B) a thermosetting resin, and (C) a compound having flux activity. Further, the present invention provides an adhesive sheet having an adhesive layer made of the adhesive composition, a protective material for a semiconductor device, which has the adhesive layer, and a semiconductor device having a cured product obtained from the adhesive composition.

Abstract: Provided is a metallosiloxane compound (A) prepared by reacting a bifunctional silane compound (S1), a monofunctional silane compound (S2), a boron compound (M), and optionally H2O in a molar ratio of [the silane compound (S1)]:[the silane compound (S2)]:[the boron compound (M)]:[H2O] of n:m:k:a, where n, m, k, and a satisfy all conditions (i), (ii), and (iii), in which the metallosiloxane compound has at least one Si—H bond or C2-10 alkenyl group per molecule, and the conditions (i), (ii), and (iii) are expressed as follows: (i) n>0, m>0, k>0, a?0; (ii) m/n?0.5; and (iii) (n+m)/k?1.8.

Abstract: The invention provides a curable silicone resin composition comprising: (A) an organopolysiloxane containing an aromatic group having two or more alkenyl groups, and having a viscosity at 25° C. of 10 to 1,000,000 mPa·s, (B) an organopolysiloxane having a resin structure, comprising 10 to 80 mol % of a SiO4/2 unit, 1 to 80 mol % of a (R1)2SiO2/2 unit, and 1 to 60 mol % of a (R2)3SiO1/2 unit, and containing a SiOH group in a range of 0.1 to 5.0 mol %, (C) an organohydrogenpolysiloxane having two or more SiH group, and among whole substituents bonded to the silicon atom, 20 to 80 mol % is a phenyl group, and a SiO4/2 unit is less than 5 mol %, and (D) a platinum group metal catalyst, and the component (B) is contained in an amount of 20 to 80% by mass based on a sum of the component (A) and the component (B).

Abstract: The object of the invention is an electrode for a Li-ion battery, which contains a crosslinked polyether-siloxane copolymer (V), which can be prepared by crosslinking of siloxane macromers (S) having the average general formula (1): HaR1bSiO(4-a-b)/2??(1), where R1 is a monovalent, SiC-bonded C1-C18 hydrocarbon radical which is free of aliphatic carbon-carbon multiple bonds and a and b are nonnegative integers, with the proviso that 0.5<(a+b)<3.0 and 0<a<2, and that at least two silicon-bonded hydrogen atoms are present per molecule, by means of polyether macromers (P) containing at least two alkenyl groups per molecule and optionally further compounds (W) containing alkenyl groups, with polyethylene glycols functionalized by one allyl group being excepted from the compounds (W) as binder; and also a process for preparing a crosslinked polyether-siloxane copolymer (V) as binder for the electrode in a Li-ion battery in a crosslinking step.

Abstract: A temporary adhesive for which temporary adhesion and subsequent detachment are simple. The temporary adhesive composition includes: (A) an organopolysiloxane having a weight-average molecular weight of at least 15,000, obtained by a hydrosilylation reaction between (A1) and (A2) described below, and (B) an organic solvent having a boiling point of not more than 220° C., wherein (A1) is an alkenyl group-containing organopolysiloxane having a weight-average molecular weight exceeding 2,000, comprising 35 to 99 mol % of T siloxane units and 1 to 25 mol % of M siloxane units, and in which alkenyl groups bonded to silicon atoms represent at least 2 mol % of all the organic groups bonded to silicon atoms, and (A2) is a specific organohydrogenpolysiloxane having at least two silicon atom-bonded hydrogen atoms or a specific hydrosilyl group-containing compound.

Abstract: A liquid silicone rubber coating composition is provided. The composition comprises (A) an organopolysiloxane having at least 2 alkenyl groups bonded to silicon atoms per molecule; (B) an organohydrogenpolysiloxane having at least 2 hydrogen atoms bonded to silicon atoms per molecule; (C) an addition reaction catalyst; (D) a fine powder silica; (E) an organic compound represented by the following general formula (1): wherein R1 is a monovalent hydrocarbon group and n is an integer of 2 to 10; (F) an organosilicon compound having an epoxy group and an alkoxy group bonded to a silicon atom in the molecule; and (G) either one or both of a titanium compounds and a zirconium compounds. When used for the silicone rubber coating layer on air bag base fabric, excellent low burning speed defined by FMVSS-302 is realized and the cured coating layer exhibits low surface tackiness with high anti-blocking property.

Abstract: A silicone emulsion composition is provided comprising organopolysiloxane, organohydrogenpolysiloxane, surfactant, and water. Two organopolysiloxanes of different type are blended, whereby a cured silicone coating is improved to be fully adherent to plastic film and lightly peelable from pressure-sensitive adhesive. By limiting the SiH content of organohydrogenpolysiloxane, the composition is improved in shelf stability. A specific surfactant is used to control the size of emulsion particles so as to improve wettability to plastic film.

Abstract: A silicone resin composition contains a first organopolysiloxane having, in one molecule, both at least two ethylenically unsaturated hydrocarbon groups and at least two silanol groups; a second organopolysiloxane having, in one molecule, at least two hydrosilyl groups without having an ethylenically unsaturated hydrocarbon group; a hydrosilylation catalyst; and a hydrosilylation retarder.

Abstract: The present invention relates to an organopolysiloxane elastomer having a silicon-bonded sugar alcohol-modified group and having a crosslinked three-dimensional network structure comprising a carbon-silicon bond in the crosslinking portion. The organomodified organopolysiloxane elastomer of the present invention has, for example, affinity with various oil agents, has excellent viscosity-improving characteristics, gelification characteristics, and emulsification characteristics, imparts excellent tactile sensation—in particular, an excellent tactile sensation characterized by smoothness with a velvet-like thickness—and imparts an excellent sensation during use.

Abstract: The present invention provides a triblock copolymer and a viscoelastic biostable foam comprising the same.

Abstract: A silicone resin is obtained by allowing a cage octasilsesquioxane having a group represented by formula (1) below, to react with an alkenyl group-containing polysiloxane containing an alkenyl group having a molarity smaller than the molarity of the hydrosilyl group of the cage octasilsesquioxane in the presence of a hydrosilylation catalyst: (where R1 represents a monovalent hydrocarbon group, R2 represents hydrogen or a monovalent hydrocarbon group, and the molar ratio of monovalent hydrocarbon group: hydrogen in R2 in the cage octasilsesquioxane as a whole is, as an average value, in a range of 6.5:1.5 to 5.5:2.5).

Abstract: A polymer composite composition wherein at least one of the constituents is a silicone ionomer and the other constituent is polymer.

Abstract: An organopolysiloxane which forms a cured product having a high refractive index, high transparency, and excellent heat resistance when subjected to a hydrosilylation reaction and which is represented by the following average unit formula: (R13SiO1/2)a(R12SiO2/2)b(R2SiO3/2)c(SiO4/2)d wherein, R1 are alkyl groups, alkenyl groups, phenyl groups, or hydrogen atoms; R2 is a group represented by R1 or a condensed polycyclic aromatic group or a group containing a condensed polycyclic aromatic group, but at least one of R1 or R2 in a molecule is an alkenyl group or a hydrogen atom, at least one R2 in a molecule is a condensed polycyclic aromatic group or a group containing a condensed polycyclic aromatic group; and a, b, c and d are numbers that satisfy: 0.01?a?0.8, 0?b?0.5, 0.2?c?0.9, 0?d<0.2 and a+b+c+d=1.

Abstract: A composition for an encapsulant, an encapsulant, and an electronic device, the composition including an adhesion-promoting agent, the adhesion-promoting agent including an epoxy group in an amount of about 2.0 to about 5.0 mmol/g, at least one first polysiloxane that includes a hydrogen bound to a silicon at a terminal end thereof, and at least one second polysiloxane that includes an alkenyl group bound to a silicon at a terminal end thereof.

Abstract: Silicone-laminated substrate, including glass cloth, and cured product of silicone resin composition—with which the glass cloth is filled and a surface of the glass cloth is coated. The silicone resin composition includes: (A) an organopolysiloxane having a resin structure of specific siloxane units, (B) an organohydrogenpolysiloxane having a resin structure of specific siloxane units, (C) a platinum group metal-based catalyst, and (D) a filler. The silicone-laminated substrate exhibits excellent mechanical properties, flexibility and workability, has minimal surface tack, and is easy to handle. The silicone-laminated substrate is produced by impregnating a glass cloth with the silicone resin composition dissolved or dispersed in a solvent, subsequently evaporating the solvent from the glass cloth, and subjecting the composition impregnated into the glass cloth to heat-curing under compression-molding conditions.

Abstract: The moisture and gas barrier properties of an organopolysiloxane having at least two substituents which are able to undergo crosslinking reactions per molecule shall be improved. This is achieved by providing an organopolysiloxane wherein at least 10 mol % of all substituents are represented by formula (1) wherein q is an integer from 0 to 5 and R1, R2, R3 each independently are methyl or ethyl groups. Furthermore, the invention is directed to a composition based on the aforementioned organopolysiloxane and to the use of the organopolysiloxane and of the composition.

Abstract: A solventless addition-curable pressure sensitive silicone adhesive composition is provided. The composition comprises (A) an alkenyl group-containing polydiorganosiloxane; (B) a condensation product of (a) a polydiorganosiloxane having hydroxyl group or an alkoxy group on opposite ends of the molecular chain and (b) a polyorganosiloxane containing R13SiO1/2 unit and SiO2 unit as critical components and also a HOSiO3/2 unit in the molecule; (C1) a polyorganohydrosiloxane having at least three SiH groups per molecule; (C2) a polydiorganohydrosiloxane having SiH group on opposite ends; and (D) a platinum group metal catalyst. Use of the present composition enables production of a pressure sensitive adhesive agent having flexibility, pressure sensitive adhesiveness, and heat resistance, and the present composition is particularly effective for use as a buffer member having pressure sensitive adhesiveness.

Abstract: The present invention relates to an organopolysiloxane elastomer having a group having a siloxane dendron structure bonded to a silicon atom, and having a crosslinked structure that includes a carbon-silicon bond in the crosslinking portion, and relates to a glycerin derivative-modified organopolysiloxane elastomer having a siloxane dendron structure bonded to a silicon atom and a hydrophilic group bonded to a different silicon atom from the silicon atom, and having a crosslinked structure that includes a carbon-silicon bond in the crosslinking portion.

Abstract: Composite materials contain a silicone addition crosslinkable silicone elastomer composition comprising an organopolysiloxane having aliphatic unsaturation, an Si—H functional cyclic organopolysiloxane, a hydrosilylation catalyst, together with specific adhesion promoters, applied to a substrate material.

Abstract: A process for forming a new group of siloxane-based compositions by a one-step co-hydrolysis and the compositions formed thereof. The siloxane-based compositions being functionalized with a carbon-carbon double (C?C) bond and a silicon-hydrogen (Si—H) bond. The C?C bond and hydrogen (H) each being attached directly to a silicon (Si) atom of the silicon-oxygen (Si—O) backbone of the siloxane-based composition. The C?C bond may be from a vinyl or an aromatic radical like a phenyl substituent. The C?C bond substituent provides the functionality needed for forming crosslinkages through standard dehydrocoupling catalysts without the need for siloxane fluids or organic compounds containing alkyl or aryl functional groups. The process provides for varying proportions of silanes as starting monomers to tailor the desired silicon, carbon, hydrogen and oxygen ratios in the siloxane-based compositions or resins.

Abstract: The present invention relates to a curable composition. A curable composition may be provided; which shows excellent processability and workability; which shows excellent light extraction efficiency, crack resistance, hardness, thermal shock resistance and adhesive strength after curing; and which has excellent reliability and long-term reliability under high-temperature and/or high-moisture conditions. Also, turbidity and surface stickiness may be prevented in the cured product.

Abstract: There is provided silicone gel-forming composition comprising a unique combination of polyorganosiloxane and organohydrogenpolysiloxane, which can produce silicone gel with improved hysteresis.

Abstract: A curable composition is provided. A cured product showing excellent light extraction efficiency, crack resistance, hardness, thermal shock resistance and adhesive strength after a curing, as well as showing excellent processability and workability is provided. Also, surface stickiness may be prevented in the cured product without causing turbidity etc.

Abstract: A curable coating composition that exhibits improved cure and adhesion to various substrates, especially synthetic textiles used in the manufacture of air bags, and good air pressure holding performance.

Abstract: An objective of the present invention is to provide a curable silicone composition of the present invention exhibiting superior adhesive properties with respect to a poor-adhesive resin such as PPS, even if the composition is cured at a relatively low temperature for a short period. The aforementioned objective of the present invention is achieved by a curable silicone composition comprising: (A) an organopolysiloxane having at least two alkenyl groups in a molecule, (B) an organopolysiloxane having at least two silicon-bonded hydrogen atoms in a molecule, (C) a hydrosilylation-reaction catalyst, and (D) an acid anhydride having an alkoxy group bonding to a silicon atom or an alkoxyalkoxy group bonding to a silicon atom.

Abstract: The invention relates to the production of nitrone-bearing siloxanes and their use as additives for radiation-curable coatings.

Abstract: A silicone resin composition includes a cage octasilsesquioxane; a polysiloxane containing alkenyl groups at both ends containing an alkenyl group having the number of moles smaller than the number of moles of the hydrosilyl group of the cage octasilsesquioxane; a hydrosilylation catalyst; a hydroxyl group-containing polysiloxane, organohydrogenpolysiloxane, or a polysiloxane containing alkenyl groups at side chain.

Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time, and having no whitening and surface stickiness.

Abstract: Provided is a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions in a long time and having no whitening and surface stickiness.

Abstract: The present application relates to a curable composition. A curable composition may be provided; which shows excellent processability and workability; which shows excellent light extraction efficiency, crack resistance, hardness, thermal shock resistance and adhesive strength after curing; and which has excellent reliability and long-term reliability under high-temperature and/or high-moisture conditions. Also, turbidity and surface stickiness may be prevented in the cured product.

Abstract: A curable composition of ionic silicones includes a silicone having the formula M1aM2bM3cD1dD2eD3fT1gT2hT3iQj having ionic groups and crosslinking functional groups. The composition can further include polyorganosiloxane having the average compositional formula R26nR27o(OH)pSiO(4-n-o-p)/2, organohydrogenoligosiloxane or organohydrogenpolysiloxane that has the average compositional formula HqR28rSiO(4-q-r)/2 a transition metal catalyst and other components such as UV stabilizer, cure accelerator, pigment, dye, antimicrobial agent, biocide, surfactant, functional or non-functional filler, conductive filler, finely divided surface treated/untreated metal oxides, clay, plasticizers, tackifiers, mold release agents, adhesion promoters, compatibilizers, pharmaceutical excipients, surfactants or antistatic agents.

Abstract: Silicone elastomer spherical particles having a volume mean particle size of 0.1-100 ?m are coated with a polyorganosilsesquioxane and washed with alcohol or a mixture of alcohol and water. The coated fine particles are water repellent so that they are non-dispersible in water and float on water.

Abstract: The present invention relates to a liquid hydrosilicone resin and a preparation process thereof. The average composition of the liquid hydrosilicone resin is represented by the following formula: (R1R2R3SiO1/2)M.(R4R5SiO2/2)D. (R6SiO3/2)T.(SiO4/2)Q wherein R1 to R6 are identical or different radicals independently selected from the group consisting of organic groups and a hydrogen atom, with the proviso that at least one of R1to R6 is a hydrogen atom bonded directly to a silicon atom. The liquid hydrosilicone resin is obtained by dispersing a hydrosilicone oil, a hydroxyl silicone resin and a dehydrogenation catalyst in a solvent to form a dispersion, allowing the dispersion to react, and then removing the solvent and the catalyst.

Abstract: The present invention relates generally to electrolyte materials. According to an embodiment, the present invention provides for a solid polymer electrolyte material that has high ionic conductivity and is mechanically robust. An exemplary material can be characterized by a copolymer that includes at least one structural block, such as a vinyl polymer, and at least one ionically conductive block with a siloxane backbone. In various embodiments, the electrolyte can be a diblock copolymer or a triblock copolymer. Many uses are contemplated for the solid polymer electrolyte materials. For example, the novel electrolyte material can be used in Li-based batteries to enable higher energy density, better thermal and environmental stability, lower rates of self-discharge, enhanced safety, lower manufacturing costs, and novel form factors.

Abstract: The present invention provides a novel modified-polysiloxane, method for producing the same, and a cosmetic containing the same. The aforementioned modified-polysiloxane exhibits a reduced viscosity and superior operationability as compared with conventional polyoxyalkylene-modified polysiloxanes and polyglycerol-modified polysiloxanes. In addition, since the modified-polysiloxane is hardly oxidized in air, hardly produce allergenic compounds such as formates, and aldehydes such as formaldehyde, during storage over time, an increased environmental compatibility can be exhibited. In addition, the modified-polysiloxane of the present invention exhibits a reduced hydrolysis property and is stable. In the modified-polysiloxane of the present invention, the terminal hydroxyl groups of a polyglycerol-modified polysiloxane are partially blocked with hydrocarbon groups.

Abstract: This application relates to a curable composition and its use. The curable composition may exhibit excellent processibility and workability. The curable composition has excellent light extraction efficiency, crack resistance, hardness, thermal and shock resistance and an adhesive property after curing. The curable composition may provide a cured product exhibiting stable durability and reliability under severe conditions for a long time and having no whitening and surface stickiness.

Abstract: The present invention is directed toward a series of polyglycerol polyesters that have silicone terminal groups with tunable ascetics and performance in cosmetic formulation. These novel silicone containing polyglycerol polyesters are designed to be multidimensional. Multidimensional is meant that the polymer contains a variety of groups containing different chemical and physical properties covalently bonded together. The physical properties of the current invention can be tuned rapidly by controlling the ratio of fatty groups, as well as the cross-linker used. Tuned here is meant the ability to adjust the physical properties to a desired value. The resulting polyglycerol polyesters have outstanding aesthetics and physical properties.

Abstract: A transparent siloxane resin composition for optical applications is provided including: (1) a vinyl-oligosiloxane hybrid prepared by a non-hydrolytic condensation reaction of an organoalkoxysilane having a vinyl group or a mixture of an organoalkoxysilane having a vinyl group and a metal alkoxide with an organosilanediol; (2) an organohydrosilicone compound having two or more silicon-bonded hydrogen atoms; and (3) a metal catalyst. The resulting transparent siloxane resin exhibits excellent light transmittance, light resistance and heat resistance, has refractive index and hardness suitable for optical applications, including optical devices, displays, LEDs or the like, and experiences little contraction during processing.

Abstract: A polysilane-polysilazane copolymer contains a polysilane unit of formula (I), and a polysilazane unit of formula (II), where each R1 and each R2 are each independently selected from H, Si, and N atoms, R3 is selected from H, Si, or C atoms, a?1, b?1, and a quantity (a+b)?2. The polysilane-polysilazane copolymer may be formulated in a composition with a solvent. The polysilane-polysilazane copolymer may be used in PMD and STI applications for trench filling, where the trenches have widths of 100 nm or less and aspect ratios of at least (6). The polysilane-polysilazane copolymer can be prepared by amination of a perchloro polysilane having (2) or more silicon atoms per molecule with a primary amine.

Abstract: Provided is a silicon-containing curable composition which includes a prepolymer (A) containing two or more Si—H groups in one molecule, which is obtained by subjecting one or more kinds of a cyclic siloxane compound (?) represented the following formula (1) and one or more kinds of a compound (?) represented by the following formula (2), to a hydrosilylation reaction; a cyclic siloxane compound (B) containing, in one molecule, two or more carbon-carbon double bonds that are reactive with Si—H groups; a polysiloxane compound (C) which is different from the prepolymer (A) and the cyclic siloxane compound (B); and a hydrosilylation catalyst (D). In formula (1), R1 to R3 each represent an alkyl group having 1 to 6 carbon atoms, or a phenyl group; a represents a number from 2 to 10; and b represents a number from 0 to 8. In formula (2), n represents the number 1 or 2.

Abstract: Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient and selective dehydrogenative silylation and crosslinking catalysts.

Abstract: A method of forming an antireflective coating on an electronic device comprising (A) applying to an electronic device an ARC composition comprising (i) a silsesquioxane resin having the formula (PhSiO(3-X)/2(OH)x)mHSiO(3-x)/2(OH)x)N(MeSiO(3-x)/2(OH)x)p where Ph is a phenyl group, Me is a methyl group, x has a value of 0, 1 or 2; m has a value of 0.05 to 0.95, n has a value of 0.05 to 0.95, p has a value of 0.05 to 0.95, and m+n+p?1; and (ii) a solvent; and (B) removing the solvent and curing the silsesquioxane resin to form an antireflective coating on the electronic device.

Abstract: The present invention relates to novel amine terminated cycloaliphatic polysiloxanes, and preparations thereof. More particularly, the invention provides several reaction schemes for the synthesis of amino-functionalized cyclo-aliphatic silicones and the products produced by the reaction schemes. In one embodiment of the invention, an amine functionalized silicone is prepared through a base-catalyzed ring-opening reaction. In another embodiment of the invention, an amine functionalized silicone is prepared through the hydrosilation of a silicone oligomer through the blocking and deblocking of an amine terminated in a vinyl group.

Abstract: Novel silicon compounds containing a siloxane or silane moiety and at least one moiety derived from a furfuryl alcohol, and methods for their synthesis, are provided. The novel compounds may be used as surface modifying agents, surfactants, defoamers, and as monomers for silicone polymerization.

Abstract: Compositions for use in tri-layer applications are described herein, wherein the composition has a matrix and includes: a formulated polymer comprising at least one type of silicon-based moiety forming the matrix of the polymer, a plurality of vinyl groups coupled to the matrix of the polymer, and a plurality of phenyl groups coupled to the matrix of the polymer, at least one condensation catalyst, and at least one solvent. Tri-layer structures are also contemplated herein that comprise an organic underlayer (first layer), antireflective compositions and/or films contemplated herein (second layer) and a photoresist material (third layer) that are coupled to one another.

Abstract: Methods and systems are provided for a dry silicone gel in a closure or interconnect system. The dry silicone gel may be made by reacting a crosslinker, a chain extender, and a vinyl-terminated polydimethylsiloxane. The reaction may be conducted in the presence of a catalyst. In certain embodiments, the dry silicone gel may comprise: (1) a hardness between 100 g and 300 g, (2) a stress relaxation between 30% and 60% when subjected to a deformation of 50% of the original size of the gel, (3) a compression set between 4% and 20% after 50% strain has been applied to the gel for 1000 hours at 70° C., and/or (4) less than 10% oil bleed out under compression of 1.2 atm after 60 days at 60° C.

Abstract: Provided are a curable composition and its use. The curable composition can exhibit excellent processability and workability. The curable composition exhibits excellent light extraction efficiency, hardness, thermal and shock resistance, moisture resistance, gas permeability, and adhesiveness, after curing. In addition, the curable composition can provide a cured product that exhibits long-lasting durability and reliability even under harsh conditions and that does not cause whitening or surface stickiness.