Presently described are optical stacks comprising a first optical film comprising a plurality of structures comprising an optically active portion designed primarily to provide optical gain and optionally an optically in-active bonding portion disposed on a first surface bonded to a second optical film with a light-transmissive adhesive layer such that a portion of the structures penetrate the adhesive layer and a separation is provided between the adhesive layer and the first surface. In one embodiment, the optical stacks exhibit a combination of high peel strength and high retained brightness, particularly after aging. The adhesive layer preferably comprises an interpenetrating network of the reaction product of a polyacrylate component and a polymerizable monomer and the adhesive layer has an elastic modulus ranging from 100 to 2000 MPa at 25° C.

Provided are: an acrylic adhesive sheet having a porous structure including a plurality of pores and having a water vapor transmission rate of 2,000 g/m.sup.2.Math.24 h to 3,500 g/m.sup.2.Math.24 h at 24° C. and 25% RH, and a porosity of 10% to 60%; and a medical adhesive tape including the same.

Provided are: an acrylic adhesive sheet having a porous structure including a plurality of pores and having a water vapor transmission rate of 2,000 g/m.sup.2.Math.24 h to 3,500 g/m.sup.2.Math.24 h at 24° C. and 25% RH, and a porosity of 10% to 60%; and a medical adhesive tape including the same.

A laminated core includes a plurality of electrical steel sheets stacked in a thickness direction, the electrical steel sheet includes an annular core back part and a plurality of tooth parts that protrude from the core back part in a radial direction and are disposed at intervals in a circumferential direction of the core back part, a fastening part is provided in a portion of the core back part corresponding to the tooth part, and an adhesion part is provided in the tooth part.

The invention provides a composition for forming an easy-to-detach thin resin film, the composition being characterized by including a urethane (meth)acrylate compound, and a first polymerizable composition containing an ethylenic unsaturated monomer having a tert-butoxy group and a radical polymerization initiator, or a polymer of a second polymerizable composition containing the ethylenic unsaturated monomer having a tert-butoxy group, wherein the amount of the ethylenic unsaturated monomer having a tert-butoxy group is 5 mass % or more and less than 95 mass % with respect to the sum of the amount of the urethane (meth)acrylate compound and the total amount of the monomer(s) contained in the first polymerizable composition or the second polymerizable composition.

The present invention relates to a permanently attached UHF band RFID tire tag and a manufacturing method thereof, and more specifically, the present invention relates to a permanently attached UHF band RFID tire tag and a manufacturing method thereof, which is attached to a tire surface during the manufacturing process of a tire in a high-temperature and high-pressure environment, enabling the management of tire manufacturing history from the beginning of the production to product shipment, and thereafter, the durability is maintained even in the flexing motion of a tire that occurs while the tire is installed and operated in a vehicle such that chip damage of a tag and tag detachment from the tire do not occur, and therefore, it enables RFID communication to be performed without obstacles until the end of a tire life.

The present invention relates to a permanently attached UHF band RFID tire tag and a manufacturing method thereof, and more specifically, the present invention relates to a permanently attached UHF band RFID tire tag and a manufacturing method thereof, which is attached to a tire surface during the manufacturing process of a tire in a high-temperature and high-pressure environment, enabling the management of tire manufacturing history from the beginning of the production to product shipment, and thereafter, the durability is maintained even in the flexing motion of a tire that occurs while the tire is installed and operated in a vehicle such that chip damage of a tag and tag detachment from the tire do not occur, and therefore, it enables RFID communication to be performed without obstacles until the end of a tire life.

A pressure sensitive adhesive composition is described that comprises a (meth)acrylic polymer comprising polymerized units of (meth)acrylic ester monomer having a Tg less than 0° C. and ethylenically unsaturated monomer comprising a pendent functional group crosslinked with an amine or carboxylic acid group of at least one amino acid. Also described are aqueous pressure sensitive adhesive compositions, adhesive-coated articles, and methods.

A pressure sensitive adhesive composition is described that comprises a (meth)acrylic polymer comprising polymerized units of (meth)acrylic ester monomer having a Tg less than 0° C. and ethylenically unsaturated monomer comprising a pendent functional group crosslinked with an amine or carboxylic acid group of at least one amino acid. Also described are aqueous pressure sensitive adhesive compositions, adhesive-coated articles, and methods.

The present teachings contemplate a method comprising coating a poly(vinyl chloride) material with a composition including a dicarbonyl compound, a cyanoacrylate compound, or a combination thereof and a viscosity modifying agent so that the composition has a viscosity of from about 50 cps to about 2500 cps; wherein the coated poly(vinyl chloride) material is capable of adhering to a second material without the use of a primer.