749results about "Amide/imide polymer adhesives" patented technology

A modified creping adhesive composition, comprising an adhesive component and at least one terpene modifier, and its use in the production of creped paper products by a process which includes the steps of adhering a paper web to the surface of a drying cylinder and separating the paper web from the drying cylinder with a creping blade.

An easily adhesive polyester film is provided which is used for protection of the back side of a solar cell, the adhesive polyester film comprising a polyester film and a resin film situated on a surface of the polyester film, the resin film comprising a crosslinking agent and a resin selected from the group consisting of a polyester resin having a glass transition point of 20 to 100° C., an acrylic resin having a glass transition point of 20 to 100° C., a combination of the resins and a combination of at least one of the resins and a polyvinyl alcohol having a saponification degree of 70 to 90 mol %. This film has excellent adhesion to EVA while having excellent mechanical properties, heat resistance and moisture resistance.

An object of the invention is to provide a pressure-sensitive adhesive sheet. Provided is an acrylic polymer for use in a pressure-sensitive adhesive composition for a touch screen panel, the acrylic polymer being obtained by copolymerizing monomer components comprising (a) a (meth)acrylic acid ester monomer having a C_1-12 hydrocarbon group, (b) a hydroxy group-containing (meth)acrylic acid ester monomer, (c) an amide group-containing monomer, and (d) a vinyl ester monomer. The acrylic polymer has an acid value of 0.1 mg KOH/g or less, a weight-average molecular weight of 400,000 to 2,000,000, a Tg of −80 to 0° C., and a permittivity of 3 to 6.

PCT No. PCT/JP96/02685 Sec. 371 Date Mar. 25, 1998 Sec. 102(e) Date Mar. 25, 1998 PCT Filed Sep. 18, 1996 PCT Pub. No. WO97/12010 PCT Pub. Date Apr. 3, 1997A delayed-tack adhesive composition exhibiting a high tack strength even for adherends made of non-polar materials such as polyethylene and polypropylene, which comprises a (co)polymer prepared by the use of a radical-polymerizable monomer having a straight-chain or branched alkyl group having 9 to 18 carbon atoms and a plasticizer being solid at ordinary temperatures.

An object of the invention is to provide an optical pressure-sensitive adhesive that is for use in pressure-sensitive adhesive attached optical films and so on, includes an acrylic copolymer and is less likely to cause display unevenness in the peripheral portion of a display screen. An optical pressure-sensitive adhesive, comprising: an acrylic copolymer containing alkyl (meth)acrylate (a1) and N-(2-hydroxyethyl)(meth)acrylamide (a2) as a monomer unit.

A radiation-curable desiccant-filled adhesive/sealant composition comprising a radiation-curable resin, one or more desiccant fillers, one or more photoinitiators or photosensitizers, and optionally, one or more inorganic or organic fillers.

The present invention relates to hotmelt adhesive compositions which comprise at least one thermoplastic polyolefin (P) which is solid at 25° C., and also at least one amide (A) of the formula (I) or (II).

These hotmelt adhesive compositions are suitable more particularly for the adhesive bonding of polyolefin films. More particularly it is possible to form assemblies of a substrate (S) and polyolefins bonded with a hotmelt adhesive.

The invention relates to cation adhesive emulsion, a method for making the same and a use of the same. The adhesive emulsion is generated through the reaction of the following compositions: soft monomer, hard monomer, crosslinking monomer, compound emulsifier of cation and nonionic emulsifier and initiator. When made, a mixed body of the soft monomer, the hard monomer and the crosslinking monomer and an initiator aqueous solution are added in the emulsifier and distilled water to carry out reaction; and the cation adhesive emulsion is made after cooling down and filtration. The aqueous latex not only has a simple making method, but also can be used in textile fabric coating dyeing, textile fabric function finish or the gluing fixative during nano material afterfinish; moreover, the aqueous latex can be used as the film former of an aqueous coating material.

This invention provides a pressure-sensitive adhesive composition that exhibits excellent pressure-sensitive adhesive properties after crosslinking treatment, does not cause lifting or lifting upon heat treatment or treatment under high-humidity conditions particularly even in the case of a pressure-sensitive adhesive layer having a reduced layer thickness, and has excellent durability. A pressure-sensitive adhesive layer formed using the pressure-sensitive adhesive composition, and a process for producing the same are also provided. Further, an optical member with pressure-sensitive adhesive comprising the pressure-sensitive adhesive layer and an image display using the same are provided. The pressure-sensitive adhesive composition is characterized by comprising 100 parts by weight of an (meth)acrylic polymer and 0.02 to 2 parts by weight of a peroxide, and 0.02 to 2 parts by weight of an isocyanate crosslinking agent, the (meth)acrylic polymer comprising as monomer units 50 to 98% by weight of an (meth)acrylic monomer represented by general formula CH₂═C(R₁)COOR₂, wherein R₁ represents hydrogen or a methyl group and R₂ represents an alkyl group having 2 to 14 carbon atoms, and 0.1 to 35% by weight of a nitrogen-containing monomer.

The present invention relates to an acrylic pressure sensitive adhesive composition, specifically, an acrylic pressure sensitive adhesive composition having improved anti-static properties, comprising acrylic copolymers, chelating agent which may form a bond with metal ion; and alkali metal salts, and prevent whitening appearance under high temperature and humidity condition as well as static electricity without change of the durability, transparency, and adhesion.

The invention is based on the discovery that a remarkable improvement in the performance of maleimide thermosets can be achieved by incorporating amide-extended maleimides into an adhesive formulation. Amide-extended maleimides described herein can be used to toughen bismaleimide thermosetting materials without sacrificing any thermal stability. Amide-extended maleimides are readily prepared by reacting a bismaleimide with an appropriate amine via the well-known Michael addition reaction. Acylation of the resulting secondary amines provides the amide-extended maleimide. The acylating agent can also be used to introduce polymerizable functional groups into the backbones of these thermoset monomers. Amide-extended acrylate and methacrylate monomers can also be prepared.

Terpolymer compositions of vinyl caprolactam (VCL), dimethylaminopropyl methacrylamide (DMAPMA) and hydroxyethyl methacrylate (HEMA) are described to coat substrates for use in computer printers, and provide advantageous print quality thereon.

The present invention provides an optical pressure-sensitive adhesive sheet in which white turbidity is not caused by humidification and durability is excellent as well. The present invention provides an optical pressure-sensitive adhesive sheet, comprising: a pressure-sensitive adhesive layer in which a moisture ratio after storage under an environment of 60° C. and 95% RH for 120 hours is 0.65 wt % or more, and a shear storage elastic modulus at 85° C. which is measured by a dynamic viscoelastic measurement is 5.0×10⁴ to 5.0×10⁵ Pa, wherein a peeling distance measured by the constant-load peel test is 30 mm or less when an adherend is a polyethylene terephthalate plate, and the peeling distance measured by the following constant-load peel test is 30 mm or less when the adherend is an acrylic plate.

The present invention relates to one-component moisture-curing compositions comprising at least one isocyanate-containing polyurethane polymer P which has a mean molecular weight of at least 4000 g/mol, and at least one polyaldimine ALD of the formula (I) or (II), where the content of isocyanate groups is at most 3.5% by weight, based on the sum of the isocyanate-containing constituents present in the composition. The compositions are suitable especially as sealants and are notable for good low-temperature performance.

A pressure-sensitive adhesive composition includes: 100 parts by mass of a polymer (A) having a glass transition temperature lower than 0° C.; and 0.05 parts by mass to 20 parts by mass of a (meth)acrylic polymer (B) having a weight average molecular weight (MwB) of 1000≦MwB<30000 that contains, as monomer units, both a (meth)acrylic monomer having an alicyclic structure represented by the following general formula (1) and a monomer having a polyoxyalkylene skeleton:

CH₂═C(R¹)COOR²  (1)

[wherein R¹ represents a hydrogen atom or a methyl group and R² represents an alicyclic hydrocarbon group having an alicyclic structure.]

Compositions and methods are described for a temporary coating and adhesive with adjustable acidity for use in coating work units as a planarization coating over high topography and also for affixing thin units onto a carrier whereby such compositions provide sufficient properties to support a manufacturing process, and upon completion, the compositions are removed by an aqueous detergent that dissolves and releases the work unit within a rapid time frame without harm to its integrity. The temporary adhesive provides a tunable acidity based upon Lewis acid represented as its acid dissociative constant, K_a, where it is preferred to have K_a≧1×10⁻⁶ (pK_a≦6), more preferred K_a≧1×10⁻⁵ (pK_a≦5), and most preferred K_a≧1×10⁻⁴ (pK_a≦4). The temporary coating and adhesive may be applied and cured in a variety of ways that meet the needs of the work unit and objectives of the manufacturing process. The invention provides benefits of flexibility and reduced cost when establishing practices to handle difficult work units in the manufacture of semiconductors and flat panel displays.