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Preparation method of nontoxic plasticizer

A production method and plasticizer technology, applied in the field of biomass plasticizer production, can solve the problems of difficult biodegradation, high production cost, environmental pollution, etc., and achieve the effects of low product cost, easy operation, and simple production process

Inactive Publication Date: 2007-02-28
罗春妹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But they have the following problems: ①It has poor compatibility with plastics such as PVC (polyvinyl chloride), and must be used in combination with phthalates such as DOP to have a better effect, that is, it can only be used as a substitute for PVC. Secondary plasticizers, generally 1-3% are added to PVC resin, the problem of toxicity and difficult biodegradation caused by phthalate plasticizers can only be alleviated but not fundamentally solved;② With vegetable oil as raw material, the production cost is relatively high
Anhui Agricultural Science and Technology Network (http: / / www.ahnw.gov.cn / 2006nykj / Show.asp?ContentID=%7B23E4B56C-76E1-4148-9A93-255COB6B97D8%7D) discloses a Method for preparing non-toxic plasticizer by methoxylation. Although this plasticizer overcomes the problem of poor compatibility with plastics, its preparation process requires a large amount of chlorine gas, which seriously pollutes the environment. Therefore, Large-scale industrial production has not yet been seen

Method used

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  • Preparation method of nontoxic plasticizer
  • Preparation method of nontoxic plasticizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: in the enamel kettle of 5000 liters, charge coefficient is by 0.75, and material weight ratio is by fatty acid methyl ester: hydrogen peroxide: organic acid: catalyst: complex stabilizer=1: (0.30.6): (0.1-0.12): (0.005-0.006): (0.0010.003), the organic acid adopts formic acid, the concentrated sulfuric acid is used as the catalyst, and urea is used as the stabilizer to ensure that peroxyformic acid has certain stability under the reaction environment; Put fatty acid methyl ester, formic acid, sulfuric acid and urea into the enamel kettle first, heat up to 48°C while stirring, stop heating, and start to drop hydrogen peroxide with a concentration of 35%; since it is an exothermic reaction, use cooling The temperature of the water is adjusted to keep the temperature in the kettle at 50-70°C; the time for adding hydrogen peroxide is controlled at 3.5-4.5 hours, and the temperature is kept for 3-4 hours after the addition is completed, so that the epoxidation r...

Embodiment 2

[0020] Embodiment 2: the organic acid is replaced with acetic acid formic acid, other technical parameters and operation steps are the same as in embodiment 1, and the finished product of non-toxic plasticizer is obtained.

Embodiment 3

[0021] Embodiment 3: the concentration of hydrogen peroxide is 25%, and the time of adding hydrogen peroxide is controlled at 2.5-3.5 hours, and after dropping, it is incubated for another 4-6 hours. Plastic products.

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Abstract

The invention discloses a nontoxic plasticizer preparing method, which is characterized by the following: using fatty acid formic ester as raw material; using peroxide as oxygen giver; using organic acid as oxygen carrier; using acid as catalyst; using complex compound as stabilizing agent; treating by epoxidation. The invention has good compatibility and low volatility, which has no toxicity.

Description

1. Technical field [0001] The invention relates to a production method of an organic chemical product plasticizer, in particular to a production method of a biomass plasticizer. 2. Background technology [0002] In the organic chemical industry, in order to improve the processing performance of plastics and rubber, it is necessary to add a certain proportion of plasticizers. At present, phthalate plasticizers are widely used, such as DOP (dioctyl phthalate), because it contains aromatic rings, it is not easy to biodegrade, because it is toxic, the scope of use is greatly limited, and it is non-renewable petrochemical products. There have been many related reports on the research and production of non-toxic plasticizers in China. For example, soybean oil, cottonseed oil, rice bran oil, rapeseed oil, linseed oil and other vegetable oils are used as raw materials to obtain a non-toxic, non-toxic plasticizer through epoxidation. Odorless plasticizer and heat stabilizer, it has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K11/00C08L27/06
Inventor 罗春妹
Owner 罗春妹
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