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Method for preparing modified aliphatic ester plasticizer

A fatty acid ester and fatty acid methyl ester technology, which is applied in the field of preparation of modified fatty acid ester plasticizers, can solve the problems affecting the performance of PVC products, non-renewable, easy to precipitate, etc., and achieve good flame retardancy and plasticization effect of effect

Inactive Publication Date: 2011-03-30
浙江嘉澳环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The most widely used varieties of flame-retardant PVC plasticizers are chlorine-containing plasticizers, such as chlorinated paraffins. However, in recent years, chlorinated paraffin products have been detected to contain carcinogens such as short-chain chlorinated paraffins. Prohibited by the European Union and other countries; and the raw material of chlorinated paraffin products comes from petroleum, which is not renewable; moreover, the compatibility of chlorinated paraffins is the worst in the field of plasticizers, and it is prone to precipitation during use, which affects the performance of PVC products

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Select fatty acid methyl esters with ester content of 96%wt, flash point of 115°C, acid value of 0.4mg / KOH / g, and iodine value of 75gI / 100g. After heating to 50°C, it will account for 30% of the mass of the ester, and the concentration will be 50%. Hydrogen peroxide and industrial formic acid with a concentration of 4% and 85% of the mass of the ester are mixed evenly, and added dropwise to the fatty acid methyl ester, and the reaction temperature is controlled to be kept at 60°C. The mass fraction of fatty acid methyl ester is controlled at about 0.02%. Stir and react under normal pressure for about 8 hours. After standing for about 2 hours, separate the oil layer and the water layer. The oil enters the drying kettle for dehydration and then pumps it into the chlorination reaction kettle. Heat it to 100°C. Open the chlorine valve to vent chlorine and adjust the flow rate of the rotor. count up to 150 3 / h. Adjust the cooling water flow rate until the temperature gaug...

Embodiment 2

[0026] Select fatty acid methyl esters with an ester content of 96%wt, a flash point of 110°C, an acid value of 0.4mg / KOH / g, and an iodine value of 75g I / 100g. After heating to 50°C, the mass fraction is 40%, and the concentration is 50%. Hydrogen peroxide and industrial formic acid with a mass fraction of 4.5% and a concentration of 85% are mixed evenly, and added dropwise to fatty acid methyl ester, and the reaction temperature is controlled at 60°C. At the same time, a mixed catalyst is added every 1-2 hours, and the total amount of addition is controlled at the fatty acid methyl ester. The mass fraction of methyl ester is about 0.02. Stir and react under normal pressure for about 8 hours. After standing for about 2 hours, separate the oil layer and the water layer. The oil enters the drying kettle for dehydration and then pumps it into the chlorination reaction kettle. Heat it to 96°C, open the chlorine valve to let chlorine flow, and adjust the rotor flow rate. Count up t...

Embodiment 3

[0029] Select the fatty acid methyl ester with an ester content of 96%wt, a flash point of 110°C, an acid value of 0.4mg / KOH / g, and an iodine value of 75gI / 100g. After heating to 50°C, add hydrogen peroxide with a mass fraction of 30% and a concentration of 50%. Mix evenly with industrial formic acid with a mass fraction of 5% and a concentration of 85%, add dropwise to fatty acid methyl ester, control the reaction temperature at 60°C, and add mixed catalyst every 1-2 hours at the same time, the total amount added is controlled at fatty acid methyl ester The ester mass fraction is about 0.02. Stir and react under normal pressure for about 8 hours. After standing for about 2 hours, separate the oil layer and the water layer. The oil enters the drying kettle for dehydration and then pumps it into the chlorination reaction kettle. Heat it to 120°C. Open the chlorine valve to let the chlorine flow, and adjust the flow rate of the rotor. count up to 150 3 / h. Adjust the cooling w...

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Abstract

The invention discloses a method for preparing a modified aliphatic ester plasticizer. Aliphatic methyl ester (or ethyl ester) is subjected to epoxidation reaction and then subjected to chlorine addition and chlorine substitution reaction, the tail gas is treated by adopting a secondary tail gas absorption device, and a calcium chloride byproduct (a water treatment agent) is manufactured. The method has the advantages that: the process is clean; and the modified aliphatic ester plasticizer has the properties of epoxy groups and chlorine ions, and has the properties of light resistance, heat resistance, stability and flame resistance as a plasticizer product. The product of the invention can be widely applied to polyvinyl chloride (PVC) tubes, profiles, PVC films and artificial leather polyurethane (PU) products with flame-resistant requirements, and plays a good role in resisting flame and plasticizing.

Description

technical field [0001] The present invention relates to a kind of preparation technology of modified fatty acid ester plasticizer, specifically refers to carry out chlorine addition and chlorine substitution reaction after fatty acid methyl ester (or ethyl ester) through epoxidation reaction, make modified Preparation method of fatty acid ester plasticizer. technical background [0002] PVC products are very convenient to use, but their Achilles' heel is that they are flammable. In recent years, major fire accidents in public places and residential buildings have occurred frequently, which not only endanger the safety of people's lives and property, but also affect social stability, which has attracted great attention from the government and competent departments. On the one hand, the cost of professional flame retardants is high. Taking PVC as an example, its raw material price is 5,000-6,000 yuan per ton, while the price of flame retardants is usually around 20,000 yuan p...

Claims

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Application Information

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IPC IPC(8): C11C3/00C08K5/1515C08L27/06C08L75/04
Inventor 沈健章金富王艳涛沈海平
Owner 浙江嘉澳环保科技股份有限公司
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