Castor oil-based polyurethane acrylate and preparation method as well as application thereof

Abstract

The invention discloses castor oil-based polyurethane acrylate and a preparation method as well as application thereof. The castor oil-based polyurethane acrylate is hexa-functional or octa-functional castor oil-based polyurethane (methyl) acrylate resin. An acrylate radical comprises a methacrylate radical and an acrylate radical, and is suitable for carrying out free radical polymerization. Under the action of a photoinitiator, the resin is irradiated by ultraviolet light and can generate cross linking at a higher speed. A film formation product of the castor oil-based polyurethane acrylate has excellent flexibility and adhesive force; the hardness and the glossiness of a cured film are obviously improved; the castor oil-based polyurethane acrylate can be used as a formula ingredient of a photo-cured coating material, ink, and an adhesive.

Description

technical field [0001] The invention relates to the field of chemical synthesis, and mainly relates to a castor oil-based urethane acrylate and its preparation method and application, in particular to the preparation of a high-functionality castor oil-based urethane (meth)acrylate. Background technique [0002] With the depletion of the world's petrochemical resources and the deterioration of the environment, the world is facing the dual pressure of sustainable economic development and environmental protection. People have deeply realized that the transformation and utilization of biomass resources is an important way for the sustainable development of society in the future. . Natural triglyceride oil-based polymer is a promising green polymer, which has shown great social significance and economic value in the fields of coatings and composite materials. Since it can achieve sustainable development from raw material sourcing to waste recycling, and the whole process is extr...

AI Technical Summary

Problems solved by technology

Mainly divided into three methods, one is the epoxy ring-opening method, and the polyol is prepared by the ring-opening reaction of epoxy triglyceride. It is an ozone oxidation method. In the presence of a catalyst, the double bond on the triglyceride fatty acid chain is oxidatively broken and reduced to a hydroxyl group with ozone. The vegetable oil polyol prepared by this method has a primary hydroxyl group at the chain end, and the polymerization activity is higher. Strong, the conversion rate is close to the theoretical value, but the conditions are relatively harsh; the third is the carbonylation method, the triglyceride double bond undergoes a carbonylation reaction under the catalytic oxidation of rhodium or cobalt complexes to generate branched aldehyde groups, and the latter in Reduction to polyols under the catalysis of Raney nickel, the carbonylation method omits the epoxidation process, but the catalyst price is high, and the process control is relatively complicated

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