A photocurable silicone composition is disclosed. A cured product of the composition is also disclosed, as well as methods of forming the same. The photocurable silicone composition comprises: (A) a specific organopolysiloxane having alkenyl groups in a molecule; (B) a compound having at least two thiol groups in a molecule; (C) a photoradical initiator having a phosphorus atom; and (D) a specific hydroxyphenyl triazine compound. The composition exhibits excellent curability by LED lamp with wide UV-Visible range as well as metal-halide lamp, and cures to form a cure product exhibiting excellent resistance to light.

Performance requirements of electroactive polymer materials used for transducer devices include dielectric breakdown strength, Young's modulus, dielectric constant, thickness, and electromechanical instability. There are correlation relationships therebetween but definitions of the correlation relationships have not been achieved. Therefore, it is necessary to search for an excellent material by trial and error, which requires a great deal of work. Disclosed herein is a curable elastomer composition that includes a compound having a high dielectric functional group. A cured product of the composition satisfies the following formula:

[00001]$E={\alpha \left(\frac{Y}{{\epsilon }_0{\epsilon }_r}\right)}^{0.5}$

where E is the dielectric breakdown strength in the range of 50 V/μm to 200 V/μm, α is a constant in the range of 0.4 to 0.9, Y is Young's modulus and is in the range of 0.001 MPa to 10 MPa, ε.sub.γ is a specific dielectric constant and is 100 or less, and ε.sub.0 represents the dielectric constant of vacuum.

The present technology provides a UV curable coating composition, methods for forming a photocured coating on a substrate, and articles that include a substrate and a photocured coating. The UV curable coating composition includes an ethylenically unsaturated polymerizable compound, a functionalized siloxane compound, and optionally a micronized inorganic particle(s). The cured coating may provide improved dirt and/or brake dust pick-up resistance.

A single vessel process for producing heteroleptic POSS compositions. The process involves the addition of two or more different organosilanes into a reactor containing a solvent. A base catalyst is added to the reactor to hydrolytically assemble the POSS cage core and statistically distribute the organic groups from the organosilanes around the periphery of the POSS cage core. An acid is then added to neutralize or quench the base catalyst. The product is washed and the remaining solvent is removed to recover the heteroleptic POSS. In some alternate embodiments, the product is filtered to recover the heteroleptic POSS. The heteroleptic POSS compositions produced by this process are able to provide an envelope of desirable effects. The heteroleptic POSS compositions may be used as additives for optimizing the performance attributes of coatings, biological materials, thermoplastics, thermoset, and gel polymer systems. The process also produces homoleptic POSS compositions with improved physical characteristics.

Polymer derived ceramic (PDC) materials, compositions and methods of making high capacity, long cycle, long life battery anodes to improve the performance of batteries of all types, including but not limited to coin cell batteries, electric vehicle (EV) batteries, hybrid electric vehicle (HEV) batteries, plug-in hybrid electric vehicle (PHEV) batteries, battery electric vehicle (BEV) batteries, lithium cobalt (LCO) batteries, lithium iron (LFP) batteries; and lithium-ion (Li) batteries, and lead acid batteries. Silicon is incorporated in the PDC material at a molecular level when reacting a polymer derived ceramic precursor and a silicon hydride constituent or a silicon alkoxide constituent to form a PDC composition useful as a powdered battery anode material. A predetermined amount of divinylbenzene is added as a crosslinker and a modifier to increase free carbon content. The resulting battery anode materials increase the specific capacity of a battery measured in milliampere-hours per gram (mAh/g) and increase the life cycle of a battery while minimizing distortion and stress of the anode structure.

Polymer derived ceramic (PDC) materials, compositions and methods of making high capacity, long cycle, long life battery anodes to improve the performance of batteries of all types, including but not limited to coin cell batteries, electric vehicle (EV) batteries, hybrid electric vehicle (HEV) batteries, plug-in hybrid electric vehicle (PHEV) batteries, battery electric vehicle (BEV) batteries, lithium cobalt (LCO) batteries, lithium iron (LFP) batteries; and lithium-ion (Li) batteries, and lead acid batteries. Silicon is incorporated in the PDC material at a molecular level when reacting a polymer derived ceramic precursor and a silicon hydride constituent or a silicon alkoxide constituent to form a PDC composition useful as a powdered battery anode material. A predetermined amount of divinylbenzene is added as a crosslinker and a modifier to increase free carbon content. The resulting battery anode materials increase the specific capacity of a battery measured in milliampere-hours per gram (mAh/g) and increase the life cycle of a battery while minimizing distortion and stress of the anode structure.

Provided is a curable organopolysiloxane composition which has a particularly excellent effect of improving initial adhesiveness in small amounts and a thin layer with respect to various base materials, in addition to being able to achieve particularly excellent adhesive durability and high adhesive strength after curing. The curable organopolysiloxane composition comprises: (A) an organopolysiloxane having at least two alkenyl groups per one molecule; (B) a trialcoxysilyl containing siloxane having one silicon atom-bonded hydrogen atom and at least one trialcoxysilyl group per one molecule; (C) a chain or cyclic organopolysiloxane having at least two silicon atom-bonded hydrogen atoms per one molecule; (D) a chain organopolysiloxane having at least three silicon atom-bonded hydrogen atoms per one molecule; (E) a catalyst for a hydrosilylation reaction; (F) a catalyst for a condensation reaction; and (G) an adhesion promoter.

A curable particulate silicone composition is disclosed. The composition comprises: (A) hot-melt silicone fine particles having a specific reactive functional group; (B) an inorganic filler; and (C) a curing agent. The content of component (B) is in the range of from 87 to 95 vol. % of the total composition. The curable particulate silicone composition provides a cured product having an average linear expansion coefficient of not greater than 15 ppm/° C. in a range of from 25° C. to 200° C. The curable particulate silicone composition provides a cured product having a very low average linear expansion coefficient over a wide temperature range when cured and is particularly suitable for overmold molding and the like.

A polydiorganosiloxane having both a silicon bonded aliphatically unsaturated group and a silicon bonded poly(meth)acrylate polymer or copolymer, and method for preparation of this polydiorganosiloxane are disclosed. The method preserves the aliphatically unsaturated groups when grafting the poly(meth)acrylate to the polydiorganosiloxane. This polydiorganosiloxane is useful in hydrosilylation reaction curable compositions, such as pressure sensitive adhesive compositions.

A polydiorganosiloxane having both a silicon bonded aliphatically unsaturated group and a silicon bonded poly(meth)acrylate polymer or copolymer, and method for preparation of this polydiorganosiloxane are disclosed. The method preserves the aliphatically unsaturated groups when grafting the poly(meth)acrylate to the polydiorganosiloxane. This polydiorganosiloxane is useful in hydrosilylation reaction curable compositions, such as pressure sensitive adhesive compositions.