Provided are a polyhedral oligomeric silsesquioxane and a preparation method thereof, more particularly, a polyhedral oligomeric silsesquioxane itself which has a low refractive property and enables formation of a coating layer with excellent chemical and mechanical properties, and provides excellent adhesive strength for the surfaces of various substrates, and a preparation method thereof.

The present invention provides a prepreg for a coreless substrate including a thermosetting resin composition containing (a) (meth)acrylic elastomer, (b) an amine compound having at least two primary amino groups, and (c) a maleimide compound having at least two N-substituted maleimide groups, and a coreless substrate using the same, a method of manufacturing the coreless substrate, and a semiconductor package.

A vulcanizate prepared by a method including introducing an elastomer, a filler, and a mercapto-functional siloxane to form a masterbatch, where the mercapto-functional siloxane is selected from the group consisting of poly(dimethylsiloxane-co-mercaptopropylmethylsiloxane) and dimethoxy mercapto propyl terminated siloxanes, introducing a curative to the masterbatch to form a vulcanizable composition, and subjecting the vulcanizable composition to curing conditions.

The present invention provides a prepreg for a coreless substrate including a thermosetting resin composition containing (a) (meth)acrylic elastomer, (b) an amine compound having at least two primary amino groups, and (c) a maleimide compound having at least two N-substituted maleimide groups, and a coreless substrate using the same, a method of manufacturing the coreless substrate, and a semiconductor package.

Disclosed is an active energy ray curable hot melt silicone composition that is non-flowable at 25 C. and has a viscosity of 1,000 Pa.Math.s or less at 100 C. The active energy ray curable hot melt silicone composition comprises: (A) a mixture of (A1) an organopolysiloxane having an aliphatic unsaturated bond-containing organic group and (A2) an organopolysiloxane optionally having an aliphatic unsaturated bond-containing organic group, (B) a compound having at least two mercapto groups in a molecule, and (C) a photoradical initiator. A cured product and a method of making a film are also disclosed.

A polycarbonate article comprises: a substrate comprising a poly(carbonate-bisphenol arylate ester) composition that comprises, based on the total weight of the poly(carbonate-bisphenol arylate ester) composition, 90 to 99.9 wt. %, preferably 95 to 99.9 wt. % of a poly(carbonate-bisphenol arylate ester), and 0.1 to 10 wt. %, preferably 0.1 to 5 wt. % of an additive comprising at least one of a processing aid, a heat stabilizer, an antioxidant, and an ultra violet light absorber; and a siloxane urethane acrylate coating disposed on at least a portion of a surface of the substrate, the siloxane urethane acrylate coating having a thickness of greater than or equal to 8 micrometers; wherein the article has a pencil hardness of 2H or harder when measured according to ASTM D3363-00 at 1,000 g force on the siloxane urethane acrylate coating.

To provide an antifouling article having an antifouling layer formed on the surface of an organic material using a fluorinated compound, wherein the antifouling article is excellent in antifouling properties and has durability such as abrasion resistance with respect to the antifouling properties.

An antifouling article comprising: a substrate, at least a portion of the surface thereof being made of an organic material; a primer layer disposed on the surface made of the organic material; and an antifouling layer disposed on the primer layer; wherein: the primer layer is a layer formed by using a first silane compound which has a hydrolyzable silyl group, and a reactive organic group (a reactive organic group (A)) that is a group having a linking group and a reactive group, or a reactive group other than a hydrolyzable group; the absolute value of the difference between the SP value of the organic material and the SP value of the reactive organic group is from 0 to 3.0 (J/cm.sup.3).sup.1/2; and the antifouling layer is a layer formed by using a second silane compound having a perfluoropolyether group and a hydrolyzable silyl group.

Disclosed is an active energy ray curable hot melt silicone composition that is non-flowable at 25 C. and has a viscosity of 1,000 Pa.Math.s or less at 100 C. The active energy ray curable hot melt silicone composition comprises: (A) a mixture of (A1) an organopolysiloxane having an aliphatic unsaturated bond-containing organic group and (A2) an organopolysiloxane optionally having an aliphatic unsaturated bond-containing organic group, (B) a compound having at least two mercapto groups in a molecule, and (C) a photoradical initiator. A cured product and a method of making a film are also disclosed.

Coating compositions including about 50-80% by weight of a water-based silicone elastomer composition, about 0.5-4.0% by weight of a silane adhesion promoter, about 0.02-0.5% by weight of a silicone surfactant, and about 10-50% by weight water are disclosed herein. Also included are methods of preparing the coating compositions and methods of using the coating compositions.

The present invention relates to a formulation technology that forms an omniphobic, slippery gel coating The formulation technology makes use of the cross-linking between two hydrophobic polymer reagents, solvated in a hydrophobic polymer lubricant, as they are combined and deposited on a substrate.