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Plasticizing system for PVDC products

A plasticizing system and product technology, which is applied in the field of food packaging materials, can solve problems such as excessive SMLSML values, achieve low esterification reaction temperature, and reduce preparation time

Pending Publication Date: 2021-08-31
河南科圣新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a plasticizing system for PVDC products, which solves the problem that SML(T) and SML values ​​exceed the standard in the existing plasticizer system

Method used

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  • Plasticizing system for PVDC products

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This example provides a plasticizing system for PVDC products, which consists of the following raw materials in parts by weight: 40 parts of diisononyl cyclohexane 1,2-dicarboxylate, 30 parts of dioctyl terephthalate , 15 parts of epoxidized soybean oil, 14 parts of acetyl tributyl citrate, and 1 part of ethoxylated castor oil.

[0022] Wherein, the preparation method of described dioctyl terephthalate comprises the steps:

[0023] (1) After mixing and stirring isocyanate and isopropyl titanate, add diethanolamine, mix and stir, and vacuum defoam at 18°C ​​for 40 minutes to obtain a catalyst; the weight ratio of isocyanate and isopropyl titanate is 0.4:1, and the The weight ratio of isocyanate to the diethanolamine is 0.7:1;

[0024] (2) Take octanol and ethylene glycol and add them to the reaction kettle, then add terephthalic acid and catalyst, stir evenly, heat slowly, keep stirring during the heating process, the stirring speed is 35r / min, the temperature rises to ...

Embodiment 2

[0028] This example provides a plasticizing system for PVDC products, which consists of the following raw materials in parts by weight: 45 parts of diisononyl cyclohexane 1,2-dicarboxylate, 25 parts of dioctyl terephthalate , 18 parts of epoxy soybean oil, 10 parts of acetyl tributyl citrate, 2 parts of ethoxylated castor oil.

[0029] Wherein, the preparation method of described dioctyl terephthalate comprises the steps:

[0030] The preparation method of dioctyl terephthalate comprises the steps:

[0031] (1) After mixing and stirring isocyanate and isopropyl titanate, add diethanolamine, mix and stir, and vacuum defoam at 15°C for 50 minutes to obtain a catalyst; the weight ratio of isocyanate and isopropyl titanate is 0.3:1, and the The weight ratio of isocyanate to the diethanolamine is 0.8:1;

[0032] (2) Take octanol and ethylene glycol and add them to the reaction kettle, then add terephthalic acid and catalyst, stir evenly, heat slowly, keep stirring during the heat...

Embodiment 3

[0036] This example provides a plasticizing system for PVDC products, which consists of the following raw materials in parts by weight: 40 parts of diisononyl cyclohexane 1,2-dicarboxylate, 35 parts of dioctyl terephthalate , 12 parts of epoxidized soybean oil, 12 parts of acetyl tributyl citrate, 1 part of ethoxylated castor oil.

[0037] Wherein, the solubilizer is ethoxylated castor oil.

[0038] Wherein, the preparation method of described dioctyl terephthalate comprises the steps:

[0039] The preparation method of dioctyl terephthalate comprises the steps:

[0040] (1) After mixing and stirring isocyanate and isopropyl titanate, add diethanolamine, mix and stir, and vacuum defoam at 20°C for 30 minutes to obtain a catalyst; the weight ratio of isocyanate and isopropyl titanate is 0.5:1, and the The weight ratio of isocyanate to the diethanolamine is 0.6:1;

[0041] (2) Take octanol and ethylene glycol and add them to the reaction kettle, then add terephthalic acid and...

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Abstract

The invention discloses a plasticizing system for PVDC products, and belongs to the technical field of food packaging materials. The plasticizing system comprises the following raw materials in parts by weight: 30-55 parts of di-isononyl-cyclohexane-1,2-dicarboxylate, 25-50 parts of dioctyl terephthalate, 15-40 parts of an auxiliary plasticizer and stabilizer and 1-5 parts of a solubilizer. By adopting the plasticizing system disclosed by the invention, under the condition of not changing existing processing conditions, use performance and appearance performance of PVDC, SML (T) and SML detection values of substances (comprising 20 substances such as DBS, ESO, DINCH, DOTP and the like) with SML (T) grouping numbers of 32 are both less than or equal to 60 mg / kg, and the SML detection value of ethoxylated castor oil is less than or equal to 42 mg / kg, so that the requirements of GB9685-2016 National Food Safety Standards for Use of Additives for Food Contact Materials and Products are met.

Description

technical field [0001] The invention relates to the technical field of food packaging materials, in particular to a plasticizing system for PVDC products. Background technique [0002] Plasticizer is a polymer material additive widely used in industrial production, also known as plasticizer. The role of the plasticizer is mainly to weaken the secondary bond between the resin molecules, increase the mobility of the resin molecular bond, reduce the crystallinity of the resin molecule, increase the plasticity of the resin molecule, make it more flexible, easy to process, and can be used legally Industrial use, widely present in food packaging, cosmetics, medical equipment, and environmental water bodies. Such as plastic wrap, food packaging, toys, etc. [0003] At present, the PVDC products used for food contact packaging use DBS (dibutyl sebacate) as the main plasticizing system; according to the requirements of GB9685-2016 "National Food Safety Standard for Food Contact Mat...

Claims

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Application Information

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IPC IPC(8): C08L27/08C08L91/00C08K5/12C08K5/11
CPCC08L27/08C08L91/00C08L2205/025C08K2201/014
Inventor 谷金河谷景昊
Owner 河南科圣新材料科技有限公司
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