High-performance alcohol/water-based printing ink and preparation method thereof

Abstract

The invention relates to intaglio printing ink for plastic and especially to high-performance alcohol / water-based printing ink and a preparation method thereof. The high-performance alcohol / water-based printing ink comprises polyurethane grafted polyacrylate copolymer prepared through a reaction between polyacrylate with hydroxy groups and polyurethane perpolymer with isocyanate as its end group, alcohol / water-soluble acrylic acid ester copolymer, alcohol / water-soluble polyurethane resin, organic / inorganic pigments, a dispersant, an adhesion promoter, polyethylene wax and a mixed solvent. According to the invention, excellent performance of the polyurethane grafted polyacrylate copolymer enables the intaglio alcohol / water-based printing ink for plastic to have good alcohol / water-solubility and solvent release; introduction of polyurethane and synergism of the polyurethane grafted polyacrylate copolymer allow the ink to have good adhesive force on a variety of plastic film substrates (BOPP, PET, PA, PVC, PE, PC, etc.); the ink has a good printing effect, strong adaptability, adapting to a variety of laminating adhesives (ester soluble type and alcohol soluble type) and high bonding strength and can be used for printing of various plastic substrates; the ink is cheaper and environment-friendlier compared to pure polyurethane printing ink and has better performance and stronger printing adaptability compared to pure acrylic acid ester copolymer printing ink; the ink provided in the invention has a wide application prospect in the field of intaglio printing for plastic.

Description

technical field

[0001] The invention relates to a plastic gravure ink, especially a high-performance alcohol water-based ink and a preparation method thereof. technical background

[0002] In recent years, with the continuous improvement of people's living standards, it not only drives the rapid growth of the packaging industry, but also promotes the continuous development of plastic gravure ink technology and market. At present, plastic gravure ink has been widely used in plastic packaging, such as various plastic film substrate packaging in food, medicine, agricultural and sideline products, daily necessities and other industries, and its application range covers almost all packaging fields. In order to adapt to the pursuit of "green and environmental protection" in social development, plastic gravure ink companies and related research institutions have been committed to the research and development of "green" inks in recent years, in order to use clean, pollution-free or ...