A kind of water-based soybean oil-rosin base hyperbranched polyester and its preparation method and application

Abstract

The invention provides a kind of water-based soybean oil-rosin-based hyperbranched polyester and its preparation method and application. The mass ratio is 10:2~8:1~5, stirring and reacting at 180°C~200°C for 2 hours; then adding glycerol to make the hydroxyl carboxyl ratio 0.3~1.5, adding a catalyst, first reacting at 180°C~220°C for 1 hour, Then react at 220° C. to 230° C. for 1 hour, and finally react at 230° C. to 270° C. for 1 to 10 hours to obtain water-based soybean oil-rosin-based hyperbranched polyester. Water-based soybean oil-rosin-based hyperbranched polyester can be widely used in water-based coatings, water-based adhesives, polymer film materials and other industries. The soybean oil-rosin-based hyperbranched polyester of the present invention is prepared into a colloidal solution, which can be directly applied to the water-based field. The raw material of the invention is cheap and green, the process is simple, and the industrial production is easy.

Description

technical field [0001] The invention relates to the preparation of a hyperbranched polyester, in particular to a water-based soybean oil-rosin-based hyperbranched polyester and a preparation method and application thereof. Background technique [0002] With the development of science and technology, the needs of people's health and environmental protection, the development of new water-based environmentally friendly materials is an inevitable trend of development. Rosin and its derivatives have always been important components of traditional coatings, inks and adhesives in the past. It has remarkable characteristics in film formation, viscosity increase and brightness improvement, and its usage is relatively large. In recent years, new materials such as water-based coatings, inks and adhesives have emerged, and rosin and its derivatives are basically not involved in these new materials. With the increasing depletion of petroleum resources, the feasibility of large-scale app...

AI Technical Summary

Problems solved by technology

[Thermosetting Resins, 2013,28(2):1-5] used triglycidyl maleopimarate and maleopimaric acid as raw materials to synthesize hyperbranched polyester, and then modified it with epichlorohydrin. However, the content of terminal hydroxyl groups of hyperbranched polyester obtained by this method is low, the hydrophilicity is poor, and the modified chlorine element in the later stage is not easy to handle, which is easy to cause serious pollution

Sun Liting et al. [Forest Products Chemistry and Industry; 2013,33(3):1-6] used maleopimaric acid and glycidyl alcohol as raw materials to prepare hyperbranched polyester, which had too many rosin rigid phenanthrene ring structures , resulting in extremely poor hydrophilicity and cannot be used in water-based fields

Zhang Haibo et al [Thermosetting Resins, 2015,30(5): 20-23] used maleopimaric acid and polyethylene glycol as raw materials to prepare water-soluble hyperbranched polyester, but the polyester is in a liquid state and is difficult to self-cure to form The coating film is not suitable for direct application as the main resin. It can be used as a component in the formulation of water-based paint and water-based adhesives (such as macromolecular surfactants and emulsifiers, etc.), but use acryloyl chloride to polish its ends. After curing and modification, it can be directly used as a light-curing main resin. However, the modification process using acryloyl chloride is complicated and the pollution is not easy to handle.

Images