C09J133/00

Radiation curable primer adhesive
11174414 · 2021-11-16 · ·

The present invention involves a 100% solids, radiation curable adhesive formulation for adhesion to EVA. This formulation may have varying compositions, as discussed in detail herein. However primarily the composition may comprise at least a monomer, and a chlorinated additive. Photo initiators may be used to allow for low temperature UV or other radiation curing. Other additives may be used to enhance functional features in various ways. In use, the present invention may be coated on a surface of EVA and then cured, and may be adhered to a substrate using only a layer of adhesive on the substrate, in contrast to the structures of the prior art, which require at least two sided adhesive application, among other complexities.

Light stable transparent adhesive compositions and methods for use thereof
11174419 · 2021-11-16 ·

Provided herein are high refractive index compositions with excellent light stability, and methods for the use thereof, as well as assemblies and articles prepared using invention formulations and methods.

Light stable transparent adhesive compositions and methods for use thereof
11174419 · 2021-11-16 ·

Provided herein are high refractive index compositions with excellent light stability, and methods for the use thereof, as well as assemblies and articles prepared using invention formulations and methods.

BATTERY AND ELECTRONIC DEVICE COMPRISING SAME

A battery, according to one embodiment of the present invention, may comprise: a pouch; an electrode assembly received in the pouch in a state in which a positive electrode substrate, a negative electrode substrate disposed below the positive electrode substrate, and a separator disposed between the positive electrode substrate and the negative electrode substrate are rolled up together; a first adhesive member for fixing at least one portion of one end of the electrode assembly to the rolled up outer surface of the electrode assembly; and a second adhesive member for providing fixing between the electrode assembly and the pouch at a region other than the region where the first adhesive member is disposed.

Acrylic pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet

The present invention provides an acrylic PSA composition. The acrylic PSA composition comprises an acrylic polymer as its base polymer and at least one species selected among tackifier resins and (meth)acrylic oligomers. The acrylic polymer has a weight average molecular weight higher than 70×10.sup.4. The acrylic polymer has a dispersity (Mw/Mn) below 15.

Acrylic pressure-sensitive adhesive composition and pressure-sensitive adhesive sheet

The present invention provides an acrylic PSA composition. The acrylic PSA composition comprises an acrylic polymer as its base polymer and at least one species selected among tackifier resins and (meth)acrylic oligomers. The acrylic polymer has a weight average molecular weight higher than 70×10.sup.4. The acrylic polymer has a dispersity (Mw/Mn) below 15.

Thermally conductive composite silicone rubber sheet and method for manufacturing same

Provided is a thermally conductive composite silicone rubber sheet formed by laminating an acrylic pressure-sensitive adhesive layer on one side of a non-pressure-sensitive adhesive/high-hardness thermally conductive silicone rubber sheet, wherein the acrylic pressure-sensitive adhesive layer is a cured product of an acrylic pressure-sensitive adhesive composition containing: an acrylic pressure-sensitive adhesive made of a polymer of a monomer mixture in which 5-50 mol % of hydroxyl group-containing monomers are contained in all of the constituent monomers; and 0.05-5 parts by mass of a chelate-based curing agent with respect to 100 parts by mass of the acrylic pressure-sensitive adhesive, and the thermally conductive silicone rubber sheet has a thermally conductive silicone rubber layer which, as a cured product of a thermally conductive silicone composition containing a thermally conductive filler, has a durometer A hardness of 60-96.

Method of forming first protective film
11781033 · 2023-10-10 · ·

A curable resin film of the present invention forms a first protective film (1a) by attaching the curable resin film containing an epoxy-based thermosetting component having a weight-average molecular weight of 200 to 4,000 to a surface (5a) of a semiconductor wafer (5) having a plurality of bumps (51) with an average peak height (h1) of 50 to 400 μm, an average diameter of 60 to 500 μm, and an average pitch of 100 to 800 μm, heating the attached curable resin film at 100° C. to 200° C. for 0.5 to 3 hours, and curing the heated curable resin film, and when longitudinal sections thereof are observed by a scanning electron microscope, a ratio (h3/h1) of an average thickness (h3) of the first protective film (1a) at a center position between the bumps (51) to an average peak height (h1) of the bumps (51), and a ratio (h2/h1) of an average thickness (h2) of the first protective film (1a) at a position being in contact with the plurality of bumps (51) to the average peak height (h1) satisfy a relationship represented by the following expression of [{(h2/h1)−(h3/h1)}≤0.1].

Method of forming first protective film
11781033 · 2023-10-10 · ·

A curable resin film of the present invention forms a first protective film (1a) by attaching the curable resin film containing an epoxy-based thermosetting component having a weight-average molecular weight of 200 to 4,000 to a surface (5a) of a semiconductor wafer (5) having a plurality of bumps (51) with an average peak height (h1) of 50 to 400 μm, an average diameter of 60 to 500 μm, and an average pitch of 100 to 800 μm, heating the attached curable resin film at 100° C. to 200° C. for 0.5 to 3 hours, and curing the heated curable resin film, and when longitudinal sections thereof are observed by a scanning electron microscope, a ratio (h3/h1) of an average thickness (h3) of the first protective film (1a) at a center position between the bumps (51) to an average peak height (h1) of the bumps (51), and a ratio (h2/h1) of an average thickness (h2) of the first protective film (1a) at a position being in contact with the plurality of bumps (51) to the average peak height (h1) satisfy a relationship represented by the following expression of [{(h2/h1)−(h3/h1)}≤0.1].

PRESSURE-SENSITIVE ADHESIVE SHEET, DISPLAY DEVICE AND LAMINATE

To provide a PSA sheet capable of providing good concealment to an adherend whose surface to which the PSA sheet is applied has been processed. Provided is a PSA sheet having a PSA layer. The PSA layer has a light transmittance of 20% or lower and an L* value of 20 or higher and 70 or lower, defined in the L*a*b* color space.