37results about How to "Excellent initial adhesion" patented technology

The invention relates to a two-sided differential adhesive tape. The two-sided differential adhesive tape comprises a first release film, a first adhering layer, a polyester film, a second adhering layer and a second release film in turn from top to bottom, wherein a fluorine plastic release film is served as the first release film; the first release film is adhered to the first adhering layer; the polyester film is arranged between the first adhering layer and the second adhering layer; a single-silicon release film is served as the second release film; the second release film is adhered under the second adhering layer. According to the invention, the mixture of sodium bicarbonate particle and carbon powder is added, so that the radiating mode in the adhering layer can be effectively improved and the radiating effect can be obviously promoted. A novel two-sided differential adhesive tape with an excellent radiating function is supplied.

Disclosed is an adhesive for laminated sheets comprising a urethane resin obtainable by blending: (A) an acrylic polyol; (B) at least one selected from carboxylic acids and carboxylic anhydrides; and (C) an isocyanate compound, wherein the acrylic polyol (A) is obtainable by the polymerization of a polymerizable monomer, has a glass transition temperature of from -35 to 20 degrees centigrade, and has a hydroxyl value of from 0.5 to 40 mgKOH/g. The adhesive for laminated sheets is excellent in initial adhesion to a film, peel strength after aging and hydrolysis resistance for a long time under high temperature when a laminated sheet is produced, and wherein the adhesive does not impart an adverse effect to the appearance of the laminated sheet and the lamination process of films while improving the curability. The laminated sheet is suitably prepared using the adhesive for laminated sheets. An article comprising the laminated sheet can be prepared using the laminated sheet.

The invention discloses a preparation method of a polyamide polyamine-polyether amine cylinder adhesive. The method comprises the following steps: under the protection of introduced nitrogen, firstlycarrying out condensation polymerization on an alkenyl amine derivative, grease and dibasic acid or corresponding dibasic ester under normal pressure, then continuously carrying out condensation polymerization under a vacuum condition until the molecular weight is not increased any more, and adding water to form an aqueous solution of a polyamide polyamine intermediate; and adding branched polyether amine into the aqueous solution, carrying out a closed reaction, heating to carry out a cross-linking reaction, finally adding an organic acid to terminate the reaction, and adding water to diluteto obtain the polyamide polyamine-polyether amine cylinder adhesive. The cylinder adhesive prepared by the invention has good adhesion, flexibility, water solubility, uniformity, durability and the like, and the use of epoxy chloropropane is avoided.

The invention discloses a UV photosensitive adhesive, the UV photosensitive adhesive comprises the following components by mass percent: 10%-15% of star SIS, 10%-15% of poly-terpene A, 1%-5% of poly-terpene B, 0.5 per mill-0.8 per mill of a light stabilizer, 1 per mill-4 per mill of an ageing agent, 3 per mill-20 per mill of hollow microspheres, and 60 per mill-75 per mill of a solvent. The UV photosensitive adhesive rapidly reaches the higher bonding strength at the room temperature, is excellent in adherence to substrates like PO (Propylene Oxide) and PVC (Polyvinyl Chloride), can resist the high temperature of 100 DEG C within a short period of time, and is soft, the initial viscosity is quite excellent, and the ageing-resistant performance is excellent. A UV protective film applyingthe UV photosensitive adhesive for a wafer not only has an obvious visbreaking effect after the UV-irradiation, but also can tackify a rubber pressure sensitive adhesive before the pressure sensitiveadhesive.

The invention relates to a base coating composition for non-ferrous metal, which can exhibit excellent initial stage adhesion, interlayer adhesion, recoating performance and scratch resistance in the coating of non-ferrous metal by containing polyester polyhydric alcohol resin, acrylic acid polyhydric alcohol resin, melamine resin, epoxy resin and the balance of a solvent, and a coating object.

A multi-lamellar tissue-adhesive sheet comprises a structural layer or laminate conjoined to a tissue-contacting layer. The structural layer or laminate comprises one or more synthetic polymers having film-forming properties, and the tissue- contacting layer of material contains tissue-reactive groups. The synthetic polymers having film-forming properties are preferably biodegradable polyesters, and the tissue-reactive groups are most preferably NHS-ester groups.

It is provided that a resin composition for sealing electrical electronic components which is not susceptible to gelation even when stagnant under high temperature conditions, and which are excellent in initial bond strength to an aluminum material, and which exhibits superior durability under a cooling and heating cycle load and the like. It is also provided that a sealed electrical electronic component with the resin composition for sealing electrical electronic components. A resin composition for sealing electrical electronic components, containing a crystalline polyester-based elastomer (A), a phenol-modified xylene resin (B1) and/or a phenol resin (B2), and a polyolefin resin (C), and having a melt viscosity of 5 dPa·s or more and 3000 dPa·s or less when dried to a water content of 0.1% or less, heated to 220° C., subjected to a pressure of 1 MPa, and extruded through a die with a hole diameter of 1.0 mm and a thickness of 10 mm.

The invention relates to a cold-patch additive material and a preparation method and application thereof. The material is prepared from 17%-20% of trichloroethylene, 11%-16% of SBS, 9%-13% of EVA, 42%-46% of diesel and13%-21% of clean oil; during preparation, the SBS is added into the trichloroethylene until no solid residues exist to obtain a prepolymer A, the EVA is added into the diesel until no solid residues exist to prepare a prepolymer B, the prepolymer A and the prepolymer B are poured into the clean oil to prepare the cold-patch additive material; when a modified asphalt mixture is prepared, the cold-patch additive material accounts for 10%-14%, asphalt accounts for 72%-80%, and a diluent accounts for 10%-14%. The cold-patch additive material and the preparation method and application thereof have the advantages that a capsule technology and a polymer thickening and reinforcing technology are introduced, the storage performance, workability, initial strength, durability and bonding performance of the modified asphalt mixture can be improved, and it is ensured that the modified asphalt mixture has excellent performance.

The invention discloses an optical polyester film and an optical laminated polyester film.At least one face of a biaxially oriented base film of the optical polyester film is coated with a bottom coating containing an adhesive and anti-adhesion particles, and the adhesive is prepared from, by weight, waterborne ultraviolet light cured polyurethane resin 40-90%, waterborne polyester resin 9-40% and epoxy resin 1-20%.The polyester film layer has excellent initial adhesion to an optical functional layer, also has good adhesion under the conditions of high temperature and high humidity, meanwhile has high transparency and excellent adhesion resistance and is suitable for the fields of LCD, PDP and other display devices.

The invention provides an adhesive sheet. The adhesive sheet has the advantages of excellent weatherability, good initial adhesiveness, excellent peeling property and good age adhesiveness even the adhesive sheet is in the ageing process after outdoor exposure or high temperature preservation, and good stress relaxation property. The adhesive sheet is obtained through forming an adhesive layer on at least one side of a substrate layer, the substrate includes at least one layer selected from a white series layer and a black series layer, the adhesive layer is formed through an adhesive containing a propylene series copolymer (A) and a resin (B), the propylene series copolymer (A) includes propylene and C2-12 alpha-olefin except propylene as copolymerization components, and the resin (B) comprises at least one selected from a crystalline olefin blocked C-B-C thermoplastic elastomer (B represents a conjugated diene polymer block and C represents a crystalline polyolefin block) hydride, homopolymerized polypropylene, an ethylene/alpha-olefin biopolymer, a propylene/alpha-olefin biopolymer, low density polyethylene, high density polyethylene and straight-chain low density polyethylene.

The invention discloses a hot melt polyurethane adhesive for bonding a honeycomb panel. The hot melt polyurethane adhesive is prepared from the following raw materials in percentage by mass: 40-50% ofpolymer polyols, 15-25% of modified rosin resin, 10-20% of EVA, 1-5% of an additive and 15-20% of polyisocyanate; the modified rosin resin is prepared by reacting linear even carbon polyols and adipic acid in different proportions to obtain polyester polyol with different molecular weights, and then esterifying the polyester polyol with rosin acid to obtain the modified rosin resin with the molecular weight of 500-1500; and the molecular weight of the EVA is 90,000-110,000. According to the hot melt polyurethane adhesive, the initial adhesive force is excellent, the opening time is appropriate, the adhesive force on a base material is good, and final adhesive strength is excellent.

The invention provides a low-pressure paste additive, belongs to the technical field of paperboard production, and specifically relates to a low-pressure paste additive. The low-pressure paste additive comprises starch, an antifoaming agent, sodium metasilicate pentahydrate, polyvinyl alcohol, sodium carboxymethylcellulose, ethoxylated dipentaerythritol, acrylic acid, maleic anhydride, ethynyl diol, a filling material and dioctyl pyrophosphate. According to the invention, a mixed paste has excellent shear-force resistance and heat resistance, and the stable viscosity of the paste is maintainedin the process of recycling, so the paste has great stability; a molecule in an additive can replace a hydroxyl group in a starch molecule, so stable crosslinking is formed; the starch molecule is encircled by an additive molecule, and capacities of resisting heat and shear force are reinforced, so the viscosity stability of the paste is maintained in the process of recycling; thus, the situationthat continuous size decrease and sharp viscosity decrease of the starch molecule due to shearing and heating during recycling causes poor bonding is reduced or avoided.

An objective of the invention is to provide an undercoat. The undercoat has excellent initial-stage adhesion, acid-resisting adhesion, and alkali-resisting adhesion with a base material and a copper film. The invention relates to an undercoat of a base material with a copper film. The undercoat contains acrylic copolymer (A) with hydroxyl, alkyl ester groups, nitrile groups, and required primary amide groups, polyisocyanates (B) at least containing three isocyanate groups, an active energy line aggregate compound (C) at least containing three carbon-carbon double bond groups, and a reactive alkoxy silyl group compound (D) represented by a formula (1): X1-Si(R1)a(OR2)3-A, wherein in the formula (1), X1 is a group containing the following functional groups, the functional groups react with at least a group selected from a group formed by hydroxyl, isocyanate groups, and groups containing polymeric carbon-carbon double bonds, R1 represents hydroxyl with 1-9 hydrogen or carbon number, R2 represents hydroxyl with 1-8 carbon number, and a represents 0, 1, or 2.

The invention relates to the field of operating gowns, and particularly discloses a waterproof and breathable operating gown material, a preparation method thereof and an operating gown. The waterproof and breathable operating gown material comprises the following raw materials: 40-50 parts of soybean protein fibers; 50 to 60 parts of linen fiber; 25-45 parts of a cellulose acetate membrane; 30 to 40 parts of a coating agent; 10 to 15 parts of microporous lignocellulose micro powder; 15 to 20 parts of a net film type adhesive; and 3-5 parts of an antibacterial agent. The preparation method comprises the following steps: S1, blending the soybean protein fibers and the linen fibers to obtain the base layer; the preparation method comprises the following steps: adding microporous lignocellulose micro powder and an antibacterial agent into a coating agent, calendaring a cellulose acetate membrane, coating the surface of the calendaring cellulose acetate membrane with a coating material, and drying to obtain a functional layer; and S2, uniformly laying the net film-shaped adhesive on the surface of the base layer, and compounding the functional layer on one side of the base layer through hot pressing to obtain the waterproof and breathable operating coat material. The fabric has the advantage of good air permeability.