493 results about "2-ethylhexyl acrylate" patented technology

The invention relates to an acrylic acid modified hot-melt pressure-sensitive adhesive for a bearing adhesive tape. The acrylic acid modified hot-melt pressure-sensitive adhesive comprises the following raw materials in percentage by weight: 10-20 percent of an SIS rubber elastomer I, 10-20 percent of an SIS rubber elastomer II, 5-10 percent of 2-ethylhexyl acrylate, 0.5-2 percent of methyl methacrylate, 0.2-0.5 percent of hydroxypropyl methacrylate, 5-50 percent of a tackifier, 10-50 percent of a solvent, and 0.5-1 percent of an initiator. The acrylic acid modified hot-melt pressure-sensitive adhesive is high in cohesion, high in adhesion stress, high in ageing resistance, strong in adhesive force on a substrate, and wide in application range. A preparation method of the acrylic acid modified hot-melt pressure-sensitive adhesive comprises the following steps: the materials are weighed: the SIS rubber elastomer I, the SIS rubber elastomer II and a solvent account for the total amount of the solvent are added in a first reaction kettle, and 2-ethylhexyl acrylate, methyl methacrylate, hydroxypropyl methacrylate, the initiator and the rest of the solvent are added in a second reaction kettle to form a mixed solution; the mixed solution is slowly added in the first reaction kettle; the tackifier is added in the first reaction kettle, and the solvent is distilled out; the materials are discharged in heating, and the finished product is obtained. The preparation method is simple in process, and high in the production efficiency and yield.

The invention discloses a method for preparing core-shell emulsion type adhesive which is modified by hydroxyl-terminated acrylic ester and is used in fabric printing and dyeing processes. The adhesive is prepared through the following steps: soft monomers copolymerize with crosslinking monomers and portions of hard monomers to produce core-shell particles; then a small portion of soft monomers and a large portion of crosslinking monomers copolymerize with hard monomers to coat the surface of the core layer, thus obtaining a shell layer and forming stable core-shell type emulsion. One or the mixture of two or more from 2-hydroxyethyl acrylate, hydroxypropyl acrylate, hydrobutyl acrylate and hydrohexyl acrylate is taken as a portion of soft monomers and crosslinking monomers; one or the mixture of two or more from hydroxylmethyl methacrylic acid, 2-hydroxyethyl acrylate methacrylic acid and hydroxypropyl methacrylic acid is taken as a portion of hard monomers and crosslinking monomers; one from butyl acrylate, ethyl acrylate and 2 ethylhexyl acrylate is taken as main soft monomers; one or the mixture of two or more from methyl methacrylate, crylic acid, cinnamene, acrylonitrile and methacrylic acid is taken as the hard monomers; surfactant sodium dodecyl sulfate, sodium dodecyl benzene sulfonate and octyl phenol polyethylene glycol are taken as emulsifying agent; potassium persulfate or ammonium persulfate is taken as initiator; and the copolymer emulsion is produced through emulsion copolymerization. Observed by transmission electron microscopy, the particles of the emulsion have visible core-shell structure and are even in distribution; the emulsion is stable, absolutely has no formaldehyde release both during the machining and using processes; the emulsion can be used both for pigment printing and for pigment dyeing.

The invention discloses a multipolymer type waterproof sealant for construction, wherein raw materials in a prescription based on ratio of part by weight are as follows: vinyl acetate, organic silicone monomer containing unsaturated double bonds, vinyl versatate, butyl acrylate, 2-ethylhexyl acrylate, acrylic acid and de-ionized water. The multipolymer type waterproof sealant has the advantages that the sealant can be used for coating surfaces of substances such as cement components, ceramics, glass, plywoods, shaving boards, palm fiber boards, bamboo slag boards, paper slag boards, composite boards, aluminum-plastic panels, polyvinyl chloride (PVC) boards, fireproof plates, metal, plastics, leather, rubber and the like and has the bonding strength that other waterproof materials cannot reach; the sealant has good stability and the shelf life at 5-35 DEG C. is more than 12 months; and the multipolymer type waterproof sealant for the construction has the advantages of no toxicity, no odor, no pollution, no corrosion, no combustion, no wiredrawing during coating and the like; and the problems of easy combustion, short shelf life, wiredrawing during coating, serious air pollution and the like during applications of solvent type materials, polyester type materials and the like are solved.

The invention provides a preparation method of a low-toxicity and low-odor single-component acrylate pressure sensitive adhesive. An acrylate adhesive is prepared first, main raw materials of the adhesive include 10-15% of butyl acrylate, 5-10% of 2-ethylhexyl acrylate, 10-15% of methyl acrylate, 2-5% of methyl methacrylate, 1-3% of functional monomer, 0-3% of specialty monomer, 50-70% of solvent and 0.05-0.15% of initiator, and a certain amount of curing agent and a certain amount of inhibitor are added after reaction ends. The acrylate pressure sensitive adhesive has the advantages of being high in stripping strength, high in stability and good in pigment / dye compatibility and can be used for the field of car window membranes and the like.

The invention discloses a preparation method of acrylate microemulsion with high solid content. The preparation method comprises the steps: adding an initiator ammonium persulfate (APS) into a mixed solution including distilled water, an emulsifier and a PH regulator, adding mixed monomers including butyl acrylate (BA), ethylene-ethyl acrylate (EEA) and 2-ethylhexyl acrylate (2-EHA) for reaction, and adding a cross-linking modifier, namely, N-Methylol acrylamide (NMA), to prepare the acrylate microemulsion with high solid content. For the microemulsion, the amount of the used emulsifier is low, and the prepared acrylate microemulsion is high in solid content.