Water-based soybean oil-rosin based hyperbranched polyester, and preparation method and application thereof

Abstract

The invention provides water-based soybean oil-rosin based hyperbranched polyester, and a preparation method and application thereof. The preparation method comprises the following steps: under the protection of nitrogen, stirring rosin, soybean oil, and maleic anhydride or fumaric acid according to a mass ratio of 10:(2-8):(1-5) at a temperature of 180-200 DEG C for 2 hours for carrying out a reaction; then adding glycerol to enable the hydroxyl-carboxylic ratio to be 0.3-1.5, adding a catalyst, carrying out a reaction at a temperature of 180-220 DEG C for 1 hour, then carrying out a reactionat a temperature of 220-230 DEG C for 1 hour, and finally carrying out a reaction at a temperature of 230-270 DEG C for 1-10 hours to obtain the water-based soybean oil-rosin based hyperbranched polyester. The water-based soybean oil-rosin based hyperbranched polyester can be widely applied to the industries of water-based coatings, water-based adhesives, high-molecular film materials and the like. A colloidal solution prepared from the soybean oil-rosin based hyperbranched polyester can be directly applied to the field of water-based materials. The water-based soybean oil-rosin based hyperbranched polyester disclosed by the invention has cheap and green raw materials, is simple in process and is easy for industrial production.

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...

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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.

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