5466results about "Pressure sensitive film/foil adhesives" patented technology

The invention relates to the technical field of folding screen supporting films, and particularly discloses a double-layer buffering supporting film for a flexible folding display screen and a preparation method of the double-layer buffering supporting film. The double-layer buffer supporting film for the flexible folding display screen sequentially comprises a release film layer, a first adhesive layer, a first stainless steel layer, a second adhesive layer, a second stainless steel layer and a protective film layer from top to bottom, the first adhesive layer and the second adhesive layer are prepared by curing the same pressure-sensitive adhesive composition; the pressure-sensitive adhesive composition is prepared from the following raw materials: acrylate copolymer, hydrogenated rosin glyceride, hyperbranched polyesteramide-dopamine conjugate, acylhydrazone bond modified siloxane, a curing agent and a silane coupling agent; the protective film layer comprises the following raw materials: PET particles, nano silicon dioxide, an ethylene-vinyl acetate copolymer and an antioxidant. The double-layer buffer supporting film has the advantages of being high in supporting rigidity and interlayer peel strength, and serious folds caused by long-term repeated folding of the folding screen can be relieved.

The invention relates to the technical field of preparation of a ceramic silica gel composite belt for a power battery of a new energy automobile, in particular to a super-high-temperature-resistant and impact-resistant ceramic silica gel composite belt for an automobile and a preparation method of the super-high-temperature-resistant and impact-resistant ceramic silica gel composite belt. The phase change toughening effect of the core-shell structure filler is generally utilized to generate pressure stress, inhibit crack propagation and improve fracture toughness through volume change during phase change, meanwhile, the core-shell structure filler is subjected to thermal expansion coefficient gradient structure design, interface stress in the core-shell structure filler at high temperature is relieved, thermal stress concentration is avoided, thermal shock resistance is improved, and the service life of the core-shell structure filler is prolonged. And the ceramic layer is prevented from cracking, so that the ceramic layer has good high-temperature resistance and flame retardance, flame spreading can be effectively prevented, and thermal runaway of the power battery is prevented.

The invention discloses a high-temperature-resistant antistatic protective film for a polaroid and a preparation method of the high-temperature-resistant antistatic protective film. The high-temperature-resistant antistatic protective film for the polaroid is characterized in that the high-temperature-resistant antistatic protective film for the polaroid is formed by compounding a PET (Polyethylene Terephthalate) base material film, an acrylic acid pressure-sensitive adhesive layer and a release film which are sequentially overlapped, the acrylic pressure-sensitive adhesive is formed by mixing a high-temperature-resistant acrylate polymer, a curing agent, an antistatic agent, a flatting agent and a solvent; the high-temperature-resistant acrylate polymer is prepared from an acrylate soft monomer, an acrylate hard monomer, an acrylate functional monomer, a heat-resistant monomer, polyhedral oligomeric silsesquioxane and an initiator through free radical polymerization in a solvent. The preparation method comprises the following steps: coating an acrylic acid pressure-sensitive adhesive on a PET (Polyethylene Terephthalate) base material film, heating and curing to form an acrylic acid pressure-sensitive adhesive layer, covering a release film, and curing to obtain the high-temperature-resistant antistatic protective film for the polaroid. The protective film provided by the invention has the characteristics of low stripping force, low climbing after high temperature, scratch resistance, good antistatic property and the like, and is suitable for being used as a surface protective film of a polaroid.

The specification relates to a wash-off label (100, 200) comprising a face (101, 301) and a pressure sensitive adhesive (102, 302) adjoined to the face, wherein the face (101, 301) comprises corona discharged filmic material and the pressure sensitive adhesive (102, 302) has a composition including at least one acrylic polymer comprising acrylic monomer(s) and / or non-acrylic comonomer(s) having a carbonyl group capable of undergoing a crosslinking reaction, amount of the acrylic monomer(s) and / or non-acrylic comonomer(s) having a carbonyl group capable of undergoing a crosslinking reaction being from 0.1 to 5 wt. % of monomer composition, and a crosslinking agent with dihydrazide functionality, amount of the crosslinking agent being from 20 to 150% with respect to the amount of the carbonyl groups capable of undergoing a crosslinking reaction. The wash-off label (100, 200) is detachable from a surface when exposed to an alkaline washing solution at a temperature of 85 degrees C. the detachability being such that the pressure sensitive adhesive (102, 302) remains attached to the face (101, 301). Further, the specification relates to a labelled item and use of the wash-off label for labelling an item. Still further, the specification relates to a label laminate web and a method of manufacturing the wash-off label as well as to a pressure sensitive adhesive composition for a wash-off label.

To provide: an adhesive composition which has excellent low viscosity when adjusted to a predetermined non-volatile content, and which, when used in an adhesive sheet, exhibits excellent releasability and is less likely to cause lifting or peeling from an adherend even after exposure to a high-temperature environment or a high-temperature and high-humidity environment; and an adhesive sheet employing the same.SOLUTION: An adhesive composition comprises an acrylic polymer (A) and a curing agent (B). The acrylic polymer (A) is a copolymer of a monomer mixture containing respective specific amounts of specific monomers (a1) and (a2). The amount of the curing agent (B) added is 0.01-5 pts.mass based on 100 pts.mass of the acrylic polymer (A). The gel fraction of an adhesive layer composed of the adhesive composition is 55-90%.SELECTED DRAWING: Figure 1

The purposes of the present invention is: to provide an adhesive composition which has excellent adhesive force and holding properties in addition to excellent low dielectric properties; to provide an adhesive tape which has an adhesive layer that contains the adhesive composition; to provide a resin molded body which is molded from a resin composition that comprises the adhesive composition; to provide a composite structure which comprises the adhesive tape; to provide an automobile member which comprises the resin molded body or the composite structure; and to provide a method for producing a resin molded body using the composite structure.　The present invention provides an adhesive composition which contains: an acrylic copolymer that has a constituent unit derived from a (meth)acrylic acid alkyl ester, a constituent unit derived from an olefin-based polymer that has a polymerizable unsaturated double bond at an end thereof, and a constituent unit derived from a polar functional group-containing monomer; and a styrene-based elastomer that contains at least one substance selected from the group consisting of a block copolymer which has a block derived from a styrene-based monomer and a block derived from a conjugated diene-based monomer, and a hydrogenated product of the block copolymer.

Provided is an agglutinant for pellicles that can reduce residues stuck onto an exposure original plate when a pellicle is peeled from the exposure original plate after being used in lithography, and also provided are a pellicle, an exposure original plate with a pellicle, a method for regenerating an exposure original plate, and a peeling residue reduction method.

A foaming adhesive sheet includes a first adhesive layer, a substrate, and a second adhesive layer, in this order, wherein the first adhesive layer and the second adhesive layer contain a curable adhesive agent; at least one of the first adhesive layer and the second adhesive layer further contains a foaming agent; a tack of the first adhesive layer is 0 gf or more and less than 10 gf; a tack of the second adhesive layer is 10 gf or more and 500 gf or less; and a loop stiffness is 50 mN / 10 mm or more.

Provided is an adhesive sheet for fixing a polishing pad for high-precision CMP processing, which is easy to adjust the reattachment position, has excellent air permeability, and also has excellent adhesive physical properties, and is a double-sided adhesive sheet for fixing the polishing pad to a surface plate. 【Solution means】 An adhesive sheet for fixing a polishing pad to a surface plate, comprising an adhesive layer A on one surface of a sheet-shaped base material, and an adhesive layer B on the other surface of the sheet-shaped base material, the surface of the adhesive layer A that is not in contact with the sheet-shaped base material has irregularities, and in the Bekk smoothness test, the smoothness of the said surface calculated | required on the following condition 1 is 1-100 second, the smoothness of the said surface calculated | required on the following condition 2 is 15-1125 second, An adhesive sheet for fixing a polishing pad, characterized by the above. Condition 1: The time until the pressure changes from -50.7 kPa to -48.0 kPa. Condition 2: The time until the pressure changes from -50.7 kPa to -29.3 kPa.

A linerless wash-off label (100) comprising a paper-based face (101, 201) and pressure sensitive adhesive (102) is provided. The paper-based face (101, 201) comprises a base paper (206) and a release layer (203), and the release layer (203) and the pressure sensitive adhesive (102) are arranged on opposite sides of the base paper (206). The pressure sensitive adhesive (102) comprises a water-based acrylic emulsion polymer composition, the pressure sensitive adhesive (102) is sensitive to washing conditions, and the base paper (206) comprises wet strength resin and has water absorptiveness of from 10 to 30 g / m2 when measured according to an ISO standard 535 (contact time 60 s). Further, a label product roll comprising the linerless wash-off labels (100) as well as a labelled item comprising an item and a linerless wash-off (100) label are provided. Still further, use of the linerless wash-off label (100) and method of manufacturing a linerless wash-off label web for providing the linerless label product roll are provided.

The invention discloses a breathable dotted adhesive tape and a preparation method thereof, and relates to the field of adhesive tapes. The breathable dotted adhesive tape comprises a base material layer and a pressure-sensitive adhesive layer, the base material layer is obtained by weaving blended and intertwined yarns according to honeycomb weave to obtain base cloth and then treating the base cloth through a burnt-out process, the base material layer is provided with a concave area and a convex area, and the porosity of the base material layer is 10-50%; the pressure-sensitive adhesive layers are distributed in a dotted manner, and are only distributed in the concave areas of the base material layer to serve as ventilation channels of the dotted adhesive tape. The breathable point-shaped adhesive tape has good breathability, pasting stability and mechanical strength, normal breathing of skin and water evaporation are guaranteed, and better viscosity and durability can be obtained. In addition, a proper amount of drug sustained-release components can be doped into the pressure-sensitive adhesive layer, the drug sustained-release rate can be regulated and controlled, and the composite material is suitable for the fields of medical dressings and sports protection.

To provide an adhesive laminated film having excellent heat resistance and capable of suppressing peeling in high temperature environments and further to provide a method for producing an adhesive laminated film having excellent heat resistance and capable of suppressing peeling in high temperature environments.SOLUTION: There is provided an adhesive laminated film having a base material layer and at least one or more adhesive layers on both surfaces of the base material layer, wherein the adhesive laminated film has a 10% weight loss temperature of 425°C or more and the adhesive laminated film has a water absorption rate of 0.60% or less when left to stand for one day under conditions of 23°C and 50%RH.SELECTED DRAWING: None

The invention provides a fluorine-containing acrylate pressure-sensitive adhesive as well as a preparation method and application thereof, and the fluorine-containing acrylate pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 30-70 parts of a soft monomer; 10 to 40 parts of a hard monomer; 1-40 parts of a fluorine-containing monomer; 1-10 parts of a functional monomer; 0.1 to 0.3 part of a thermal initiator; 100 to 300 parts of a solvent; the fluorine-containing monomer comprises any one or a combination of at least two of trifluoroethyl acrylate, hexafluorobutyl acrylate, hexafluorobutyl methacrylate, hexafluoroisopropyl acrylate, octafluoroamyl acrylate, dodecafluoroheptyl acrylate, dodecafluoroheptyl methacrylate and tridecafluorooctyl methacrylate. The wafer cutting adhesive tape prepared from the fluorine-containing acrylate pressure-sensitive adhesive provided by the invention has relatively good stripping performance, high temperature resistance and hydrophobicity.

The invention discloses a preparation method of a vehicle-mounted OCA optical adhesive, and belongs to the technical field of optical adhesive materials. The vehicle-mounted OCA optical adhesive comprises an optical light release film, an acrylic adhesive layer and an optical heavy release film which are sequentially arranged from top to bottom, the preparation method comprises the following steps: mixing and stirring an acrylic pressure-sensitive adhesive, 2-ethylhexyl acrylate, isobornyl acrylate, acryloylmorpholine, dodecyl ester, N-vinyl pyrrolidone, a bridging agent and a photoinitiator, filtering, and defoaming to obtain an acrylic adhesive; and coating a release film with the obtained acrylic adhesive, and irradiating the release film with a halogen lamp to obtain the vehicle-mounted OCA optical cement. The vehicle-mounted OCA optical adhesive prepared by the invention has better high-temperature-resistant and high-temperature-resistant and high-humidity-resistant effects, is simple in preparation process and is suitable for large-scale production.

The invention belongs to the technical field of anti-icing and deicing, and provides an anti-icing and deicing coating, a preparation method thereof and an anti-icing and deicing composite film. The anti-icing and deicing coating comprises a filling phase and a continuous phase, wherein the filling phase is bulges arranged in an array; the continuous phase is used for filling gaps among the bulges arranged in the array; the filling phase is formed by curing a low-modulus coating (the elastic modulus after curing is 10-500MPa); and the continuous phase is formed by curing a high-modulus coating (the elastic modulus after curing is greater than or equal to 1.5 GPa). According to the anti-icing and deicing coating disclosed by the invention, the high-modulus continuous phase and the low-modulus filling phase are combined, so that the defect of poor wear resistance of a coating formed by only utilizing a single low-modulus material is overcome; meanwhile, the low-modulus filling phase is limited to be formed by the protrusions arranged in an array mode, gaps of the low-modulus filling phase are filled with the high-modulus continuous phase, a high-modulus and low-modulus alternating structure is formed, and the ice adhesion strength of the coating is reduced through a crack propagation mode.

Provided is an adhesive composition from which an adhesive layer having excellent heat-resistant durability can be formed. This adhesive composition comprises a (meth)acrylic resin, a crosslinking agent, a silane compound, and an ionic compound, wherein: the (meth)acrylic resin contains, as monomer units, an alkyl (meth)acrylate having a homopolymer glass transition temperature of lower than 0ºC, an alkyl (meth)acrylate having a homopolymer glass transition temperature of at least 0ºC, and a monomer having a polar group; and the ionic compound contains a cyano group-containing anion.

The invention discloses a water-based acrylate pressure-sensitive adhesive emulsion as well as a preparation method and application thereof, and the preparation method comprises the following steps: S1, providing an acrylate pre-emulsion A and an initiator solution B; s2, dropwise adding a part of the acrylate pre-emulsion A into the initiator solution B, and carrying out a heating reaction to obtain a polymer A emulsion; s3, providing a monomer composition B, and mixing the rest of the acrylate pre-emulsion A and the monomer composition B to obtain an acrylate pre-emulsion B; and S4, dropwise adding the acrylate pre-emulsion B into the polymer A emulsion, and heating for reaction to obtain the water-based acrylate pressure-sensitive adhesive emulsion. The water-based acrylate pressure-sensitive adhesive emulsion prepared by the preparation method disclosed by the invention has relatively good adhesiveness, mobility and PVC shrinkage resistance after being coated on a PVC base material.

The invention relates to the technical field of adhesive tapes, and particularly discloses a UV (ultraviolet) visbreaking anti-acid adhesive tape for thinning flexible glass and a preparation process of the UV visbreaking anti-acid adhesive tape. A UV viscosity-reducing acid-resistant adhesive tape for thinning flexible glass comprises a base material layer, a pressure-sensitive adhesive layer and a release film layer which are stacked in sequence, and the pressure-sensitive adhesive layer is prepared from the following raw materials: 85-120 parts by mass of an acrylate copolymer, 3-5 parts by mass of a cross-linking agent, 1.5-2.5 parts by mass of a photoinitiator, 2-5 parts by mass of an acid-resistant nano filler and 0.2-0.4 part by mass of an amine catalyst; the acrylate copolymer is prepared from the following raw materials in parts by mass: 20-30 parts of an imidazolinyl-containing monomer, 15-25 parts of a large-steric-hindrance alkyl-containing monomer, 45-55 parts of a flexible monomer and 5-10 parts of a carboxyl-containing monomer. The UV visbreaking acid-resistant agent prepared by the invention has relatively good acid resistance and reliable UV visbreaking and high initial bonding balance.

To provide a pressure-sensitive adhesive sheet capable of suppressing heavy peeling even when using an aqueous pressure-sensitive adhesive composition.SOLUTION: A pressure-sensitive adhesive sheet according to an embodiment of the present invention includes: a base material; and a pressure-sensitive adhesive layer formed of a water-dispersible pressure-sensitive adhesive composition containing a water-dispersible polymer, wherein a surface concentration of a carboxyl group on a surface of the pressure-sensitive adhesive layer obtained by an X-ray photoelectron spectroscopy (ESCA) gas phase chemical modification method is a detection limit value or less.SELECTED DRAWING: Figure 1

The present disclosure relates to an adhesive tape for a semiconductor manufacturing process, the adhesive tape being attached on a lower surface of a semiconductor package on which a plurality of protrusion electrodes are formed. The adhesive tape is configured to include a first base film, a first adhesive layer containing an acrylic-based copolymer, the first adhesive layer being stacked on top of the first base film, a second base film containing a metal material in such a manner as to be deformed and then kept deformed during each process in a manner that corresponds to a topology of the lower surface of the semiconductor package, the second base film being stacked on top of the first adhesive layer, and a second adhesive layer containing silicon having a spiral network structure, the second adhesive layer being on top of the second base film.

The purpose of the present invention is therefore to provide a thermally conductive composite tape which is in a form of sheet and, therefore, easy to handle, excellent in strength and electrical insulation, easily stick to an element or heat release-member, and shows strong adhesion to the heat-release member. The present invention provides a thermally conductive composite comprising a first thermally conductive adhesive layer, a reinforcing layer (A) layered on one surface of the first thermally conductive adhesive layer, and a second thermally conductive adhesive layer layered on a free surface of the reinforcing layer (A), wherein the first and second thermally conductive adhesive layers comprise, independently of each other, a silicone composition comprising the following components (a) to (e): 100 parts by mass of (a) linear or branched organopolysiloxane, 1,000 to 3,000 parts by mass of (b) thermally conductive filler, 100 to 500 parts by mass of (c) silicone resin, 1 to 10 parts by mass of (d) organohydrogenpolysiloxane, and 0.5 to 5 parts by mass of (e) organic peroxide.

A flexible display device example includes a display panel including an active area, a non-active area, and a bending area and having one edge that is bent in a rear direction to have a predetermined curvature, first and second back plates disposed on a rear surface of the display panel, a metal plate disposed on a rear surface of the first back plate and an adhesive member disposed between the metal plate and the second back plate, and including a support layer, a first adhesive layer and a third adhesive layer disposed on an upper portion of the support layer, and a second adhesive layer disposed on a lower portion of the support layer, wherein the third adhesive layer may include a conductive material and may have conductivity. Thus, fixing force of a bending portion may increase, thereby preventing cracks in the bending portion that may occur during drop evaluation.

The invention provides a preparation method of an acid and alkali resistant acrylate adhesive and a preparation method of a pressure-sensitive adhesive tape. The preparation method comprises the following steps: mixing 30-60 parts of an acrylate soft monomer, 10-30 parts of an acrylate hard monomer, 2-10 parts of an acrylate functional monomer, 0.01-0.5 part of an initiator and a solvent; supplementing an initiator, and carrying out heat preservation reaction; diluting to obtain acrylic resin; adding a curing agent and mixing to obtain an acrylate adhesive precursor; adding 1-10 parts of polybenzoxazole fibers, 1-10 parts of a silane coupling agent and a solvent to obtain an acid and alkali resistant acrylate adhesive; and coating the acid and alkali resistant acrylate adhesive on a base material to obtain the acid and alkali resistant acrylate pressure-sensitive adhesive tape. The acid and alkali resistant acrylate adhesive and the pressure-sensitive adhesive tape prepared by the invention have excellent acid and alkali resistance, the acid and alkali resistant pressure-sensitive adhesive tape can effectively protect an electronic element from being corroded by acid and alkali, the edge of the pressure-sensitive adhesive tape is free of upwarp and bubbles, and no adhesive residue exists after a film is uncovered.

The invention relates to the technical field of functional label paper, in particular to degradable bio-based hot-melt pressure-sensitive adhesive label paper and a preparation method thereof.The degradable bio-based hot-melt pressure-sensitive adhesive label paper comprises a base material layer, a hot-melt pressure-sensitive adhesive layer and a release layer; 30-50 parts of the base material layer is a polylactic acid / bamboo fiber / nanocellulose composite film; 40-60 parts of the adhesive layer contains poly (butylene adipate-butylene terephthalate) and the like, and contains a composite toughening agent; and 5-10 parts of a release layer is a beewax / chitosan / montmorillonite coating. The mechanical and adhesive properties of the label paper are improved, and the label paper is good in weather resistance, full-degradable, environment-friendly, stable in process, suitable for the fields of food and medicine and capable of supporting industrialization.

The present invention provides a high-temperature easy-to-peel heat-reducing adhesive protective film, comprising a substrate layer, a heat-reducing adhesive layer and a release layer; the heat-reducing adhesive layer comprises the following components calculated by added mass: 60-80 parts of polyacrylate prepolymer; 0.1-0.5 parts of curing agent; 0.1-0.5 parts of catalyst; 1-3 parts of expanded microspheres; 2-10 parts of tackifying resin; 10-20 parts of organic solvent; the present invention also provides a method for preparing a high-temperature easy-to-peel heat-reducing adhesive protective film. The high-temperature easy-to-peel heat-reducing adhesive protective film provided by the present invention overcomes the defects of residual glue, slow viscosity reduction speed, low efficiency, etc. existing in the prior art, improves the viscosity reduction speed of the protective film, thereby improving the efficiency, and can meet the use requirements of temporary fixation of electronic components, surface processing of semiconductor wafers and other fields.

To provide: an adhesive composition which has excellent low viscosity when adjusted to a predetermined non-volatile content, and which, when used in an adhesive sheet, exhibits excellent releasability and is less likely to cause lifting or peeling from an adherend even after exposure to a high-temperature environment or a high-temperature and high-humidity environment; and an adhesive sheet employing the same.SOLUTION: An adhesive composition comprises an acrylic polymer (A) and a curing agent (B). The acrylic polymer (A) is a copolymer of a monomer mixture containing respective specific amounts of specific monomers (a1) and (a2). The amount of the curing agent (B) added is 0.01-5 pts.mass based on 100 pts.mass of the acrylic polymer (A). The gel fraction of an adhesive layer composed of the adhesive composition is 55-90%.SELECTED DRAWING: Figure 1

The specification relates to a face (100, 200) for a direct thermal linerless label. The face (100, 200) comprises a release layer (101, 201), a thermal layer (102, 202), a pre-coat layer (103, 203), a base paper (104, 204), and a barrier layer (105, 205). The base paper (104, 204) has a grammage of from 50 to 90 g / m2 and the barrier layer (105, 205) has a coat weight (dry) of from 0.5 to 3.5 g / m2. Further, a direct thermal linerless label (210), a linerless label product roll comprising direct thermal linerless labels and a labelled item are provided. Also, use of the direct thermal linerless label (210) for labelling an item as well as a method of manufacturing a linerless label web for providing the linerless product roll are provided.

A substrate-conveying support tape includes: a support film; a primer layer provided on the support film; and a temporary fixing material layer provided on the primer layer, in which the support film is a polyimide film, the temporary fixing material layer contains a thermoplastic resin, and the primer layer contains at least one selected from the group consisting of a silane coupling agent having an epoxy group or a ureido group, an epoxy resin, a polyurethane rubber, and an acrylic rubber having an acid value of 5 mgKOH / g or more.

To provide a compound that can increase bond strength of an adhesive composition, particularly can increase bond strength even to an adherend having low polarity, a method for manufacturing the compound, an adhesive composition containing the compound, and an adhesive tape having an adhesive layer containing the adhesive composition.SOLUTION: A compound has at least one kind of constitutional unit (A) selected from the group consisting of constitutional unit (A-1) and constitutional unit (A-1') expressed by the following formula, and a constitutional unit (B) derived from at least one kind monomer (b) selected from the group consisting of terpene-based monomer and vinyl-based monomer. In the formula, R1 severally denotes an aliphatic hydrocarbon group having a hydrogen atom, an aliphatic hydrocarbon group, an aromatic hydrocarbon group, a polar functional group and a polar functional group, or an aromatic hydrocarbon group having a polar functional group, n denotes an integer of 2 or more and 4 or less, and n' denotes an integer of 2 or more and 5 or less.SELECTED DRAWING: None

The present invention relates to foamable pressure-sensitive adhesive formulations for self-adhesive tapes, a foamed pressure-sensitive adhesive layer comprising the pressure-sensitive adhesive formulation, a self-adhesive product comprising at least one layer of the pressure-sensitive adhesive formulation in the form of a foam, respective methods for producing the foamable pressure-sensitive adhesive formulation, the foamed pressure-sensitive adhesive layer and the self-adhesive product, and to the use thereof.