A swelling tape including a base layer and an adhesive swelling is provided. The adhesive swelling layer contains a water-based self-healing binder. An electrode assembly in which the swelling tape is attached to an outer circumferential surface thereof, and a secondary battery including the electrode assembly are also provided.

A battery packaging material that is excellent in electrolytic solution resistance and ink printing characteristics of the surface. A battery packaging material comprising a laminate having at least a protective layer, a base material layer, a barrier layer, and a heat-sealable resin layer in this order, wherein a maximum value A of absorbance detected in an infrared wavenumber range of 2800 to 3000 cm.sup.−1 and a maximum value B of absorbance detected in an infrared wavenumber range of 2200 to 2300 cm.sup.−1 satisfy the relation: 0.05≤B/A≤0.75, as measured from an outermost surface of the protective layer, using attenuated total reflection Fourier transform infrared spectroscopy.

A fire stopper includes a fire extinguishing agent-containing layer and a resin substrate arranged in this order.

The invention provides an assembly for fuel cell which has an excellent adhesive force in the presence of hot water, and a laminated body which is used for the assembly for fuel cell. The assembly for fuel cell comprises an adhesive resin layer containing a polyolefin having at least one group selected from the group consisting of an acidic group and an acid anhydride group and having an acid value of 0.01 mgKOH/g to 6.5 mgKOH/g; and two or more members bonded with the adhesive resin layer interposed therebetween, wherein at least one of the members is a metal member having a ratio of a dipole term in surface free energy of 0.01% to 5.0%.

Provided is a laminate for an electrochemical device that can advantageously be used as a device member having excellent low-temperature adhesiveness and blocking resistance. The laminate includes a functional layer containing heat-resistant fine particles and adhesive particles and a substrate. The adhesive particles contain an adhesive polymer that includes an aromatic vinyl monomer unit and a wax that has a melting point of lower than 95° C. In plan view of the laminate from a side corresponding to the functional layer, the functional layer includes an adhesion region formed of the adhesive particles and a heat-resistant region formed of the heat-resistant fine particles. The volume-average particle diameter of the adhesive particles is larger than the average stacking direction height of the heat-resistant region.

The invention relates to an acrylonitrile copolymer binder and application thereof in lithium ion battery, belonging to the field of lithium ion battery. The technical problem to be solved by the invention is to provide an acrylonitrile copolymer binder comprising the following structural units in percentage by weight: 78-95% of acrylonitrile unit, 1-10% of acrylic ester unit and 2-15% of acrylamide unit. For the binder of the invention, acrylonitrile monomer is taken as the main body, and acrylic ester monomer, acrylamide monomer or acrylate salt monomer with strong polarity is added to acrylonitrile for copolymerization to enable the flexibility of a polymer membrane, the affinity of an electrolyte and the proper swelling degree in the electrolyte while keeping strong adhesion or intermolecular force of acrylonitrile polymer molecules, so as to fit the periodic volume changes of electrode active materials along with lithium ion intercalation/deintercalation in charging and discharging processes, thereby improving the energy density and cycle performance of the lithium ion battery.

The invention is related to a method for bonding components of a PEM fuel cell with a frame and/or amongst one another, wherefore an adhesive curable by electromagnetic radiation in the range of visible light or UV is applied to the frame and/or the at least one component. The invention is characterized in that the adhesive is activated by the electromagnetic radiation and heated after the frame and/or components are brought into contact; or the frame and/or the components are brought into contact and the adhesive is exposed to electromagnetic radiation for activating and heating; to reduce its viscosity before the adhesive is finally cured. The adhesive is a cationic epoxy which contains water.

A crosslinking adhesive composition containing an acrylic copolymer with 3 parts by mass or more and less than 25 parts by mass of component (A1), having two or more hydroxyl group-containing (meth)acrylate monomers, each of which has a defined molecular structure; 5 parts by mass or more and less than 25 parts by mass of component (A2) having a carboxylic acid group-containing (meth)acrylate monomer; 5 parts by mass or more and less than 30 parts by mass of component (A3) having a (meth)acrylic acid alkyl ester monomer with a defined molecular structure; and 50 parts by mass or more and less than 90 parts by mass of component (A4) having a (meth)acrylic acid alkyl ester monomer having a defined molecular structure, with respect to 100 parts by mass consisting of the sum of components (A1) to (A4).

Disclosed herein is a bio-based copolymer comprising in polymerized form (i) at least one polymerizable bio-based monomer containing one phenolic hydroxyl group which has been derivatized to provide at least one polymerizable functional group which is an ethylenically unsaturated functional group (such as a [meth]acrylate group), where the precursors of the polymerizable bio-based monomers are derived from raw lignin-containing biomass, and (ii) at least one ion-conducting co-monomer other than the bio-based monomer. Also disclosed herein are binders comprising the bio-based copolymer, electrodes comprising the binder, polymer electrolytes comprising the bio-based copolymer and an electrochemical device comprising an electrode in electrical contact with a polymer electrolyte, wherein at least one of the electrode and the polymer electrolyte comprises the bio-based copolymer.

A pressure sensitive adhesive composition containing: a (meth)acrylic ester polymer (A) including an alkyl (meth)acrylate monomer (a1) and a reactive functional group-containing monomer (b) as monomer units that constitute the polymer; and an inorganic filler (C), wherein the carbon number of an alkyl group in the alkyl (meth)acrylate monomer (a1) is 6 or more and the alkyl group is linear. In the pressure sensitive adhesive composition, the inorganic filler can be uniformly dispersed in a short time even when a dispersant is not contained.