Method for preparing biodegradable composite plasticiser

Abstract

The invention discloses a preparation process for a compound plasticizer, in particular to a preparation method for a compound plasticizer by utilizing the biodegradation. The invention uses the primary products of renewable and biodegradable vegetable oil as the raw materials, the raw materials are stirred under the condition of the temperature being controlled between 0 and 50 DEG C, the iodinevalue of the mixed vegetable oil is controlled between 100 and 150 through different preparation portions of different vegetable oil, the viscosity is controlled between 250MPa.s and 380MPa.s, the acid value is controlled below 2.0, and compound materials are prepared; the compound materials are added with phosphoric acid, alkali, etc, and finally are treated by hydrogen peroxide, formaldehyde, etc. to obtain the product. The preparation method has the advantages of clean and environment-friendly production process, non-toxicity and biodegradability of the product, no harm to the environment and good performance of the product. The preparation method can be widely used in various occasions with vegetable oil.

Description

technical field [0001] The invention relates to a preparation process of a composite plasticizer, in particular to a preparation method utilizing a biodegradable composite plasticizer. technical background [0002] Although phthalates and terephthalates plasticizers have occupied a majority position in the market for a long time, due to the serious social and environmental hazards of these products and the constraints of non-renewable raw materials and high cost prices, It will eventually be replaced by new environmentally friendly and renewable plasticizers. Since the 1990s, there have been non-toxic plasticizer products produced by epoxidation reaction using edible vegetable oil such as soybean oil as the main raw material, which has injected new vitality into the plasticizer industry. However, this plasticizer product also has serious problems: one is that the technical index of the existing epoxy soybean oil product in my country is low, and there are various defects in...

AI Technical Summary

Problems solved by technology

However, this plasticizer product also has serious problems: one is that the technical index of the existing epoxy soybean oil product in my country is low, and there are various defects in product performance, which cannot completely replace adjacent Phthalate and terephthalate plasticizer products can only be replaced by a small part, and cannot fundamentally eliminate social and environmental hazards; secondly, due to the excessive reliance on the use of stabilizers and cations in the production process of such products Refractory additives such as exchange resins cause great difficulties to the later separation process and increase production costs. Due to the existence of the above composite particles, the final product cannot be biodegraded; the third is that the main production raw materials of such products are edible Soybean oil competes for human grain and oil resources, restricting the sustainable development of the industry