Alcohol-soluble composite film adhesive and preparation method thereof

Abstract

The invention discloses an alcohol-soluble composite film adhesive and a preparation method thereof, belonging to the field of an adhesive. The adhesive is prepared from the following components in percentage by weight: acrylate polymer, tackifying resin and solvent, wherein the acrylate polymer is polymerized from 20-50wt% of acrylate hard monomer, 40-70wt% of acrylate soft monomer and 1-10wt% of acrylate functional monomer by a solution polymerizing method under the actions of an initiator and the solvent. The glass transition temperature of the acrylate polymer is -10 to -40 DEG C. As the acrylate hard monomer and the acrylate soft monomer are reasonably matched, and a certain acrylate functional monomer is matched to participate into the polymer, the molecular chain of the acrylate polymer in the composite film adhesive has multiple chemical bond structures of -COH, -OH, -NH and the like, multiple intermolecular action force can be formed, the adhesive can be adhered to various composite materials with good adhesion property and wide adhesion range. The prepared composite film adhesive can use the alcohol as the main solvent and has the advantages of little toxicity and low cost.

Description

technical field

[0001] The invention belongs to the technical field of adhesives, and in particular relates to an alcohol-soluble laminating adhesive and a preparation method thereof. Background technique

[0002] With the rapid development of the printing and packaging industry, laminating technology is widely used in the field of printing and packaging. Therefore, the demand for laminating glue is increasing in quantity and type.

[0003] At present, most of the laminating adhesives used in China are two-component polyurethane adhesives. Due to the need to strictly proportion the adhesives during use, and the remaining adhesives after each production cannot be reused every other day, resulting in waste and loss. Whether it is rubber type or polyacrylate type, single-component laminating adhesives mostly use toluene and ethyl acetate as solvents. Toluene is a toxic solvent that must be completely evaporated during the laminating process, which not only affects the operation...