Benzene-free ketone-free food grade thermoplastic resin and preparation method thereof

A thermoplastic resin, benzene-free and ketone-free technology, applied in the field of environmental protection paint preparation, can solve the problems of insufficient control of raw materials and processes, unsatisfactory products, etc., and achieve excellent effects of fast drying and good alcohol resistance

Inactive Publication Date: 2017-06-13
汕头市金森源化工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing printing inks used for coating food-grade utensils, due to insufficient raw materials and process control, lead to the presence of harmful and toxic substances such as ketones and benzene in resin products, resulting in products that cannot meet the requirements of Class A materials in the "Hazardous Substance Standards" Control requirements, control requirements for 1A, 1B and 2 carcinogenic, teratogenic and reproductive toxic substances, highly toxic or toxic substances

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A kind of benzene and ketone-free food-grade thermoplastic resin, its weight component raw materials include: methyl methacrylate 43kg, butyl acrylate 3 kg, butyl methacrylate 3 kg, methacrylic acid 1 kg, over 0.3 kg of oxy-2-ethylhexyl ester and 49.7 kg of n-propyl acetate.

[0024] The preparation of the benzene-free and ketone-free food-grade thermoplastic resin comprises the following steps:

[0025] (1) Put 35kg of n-propyl acetate into the reactor, raise the temperature of the reactor to 105°C, and keep the temperature until the dropwise addition of the mixed components in step (2) is completed;

[0026] (2) Take 0.3g of 2-ethylhexyl peroxide; the monomer composed of methyl methacrylate, butyl acrylate, butyl methacrylate and methacrylic acid, and the remaining Initiator peroxide-2-ethylhexyl, stirred to mix evenly to obtain a mixed solution;

[0027] (3) Add the above mixed solution dropwise into the reaction kettle at a constant speed of V=0.14kg / min. After co...

Embodiment 2

[0033] A kind of benzene and ketone-free food-grade thermoplastic resin, its weight component raw materials include: methyl methacrylate 480 kg, butyl acrylate 35 kg, butyl methacrylate 35 kg, methacrylic acid 15 kg, over Oxidation-2-ethylhexyl 4kg, n-propyl acetate 431kg.

[0034] The preparation of the benzene-free and ketone-free food-grade thermoplastic resin comprises the following steps:

[0035] (1) Put 323kg of n-propyl acetate into the reaction kettle, raise the temperature of the reaction kettle to 108°C, and keep the temperature until the dropwise addition of the mixed components in step (2) is completed;

[0036] (2) Take 4g of 2-ethylhexyl peroxide; the monomer composed of methyl methacrylate, butyl acrylate, butyl methacrylate and methacrylic acid, and the remaining initiator Agent peroxide-2-ethylhexyl, stirred to mix evenly to obtain a mixed solution;

[0037] (3) Add the above mixed solution dropwise to the reaction kettle at a constant speed of V=1.58kg / min...

Embodiment 3

[0043] A kind of benzene and ketone-free food-grade thermoplastic resin, its weight component raw materials include: methyl methacrylate 380 kg, butyl acrylate 25 kg, butyl methacrylate 25 kg, methacrylic acid 5 kg, over Oxidation-2-ethylhexyl 2kg, n-propyl acetate 563kg.

[0044] The preparation of the benzene-free and ketone-free food-grade thermoplastic resin comprises the following steps:

[0045] (1) Put 210kg of n-propyl acetate into the reactor, raise the temperature of the reactor to 108°C, and keep the temperature until the dropwise addition of the mixed components in step (2) is completed;

[0046] (2) Take 2g of 2-ethylhexyl peroxide; mix monomers composed of methyl methacrylate, butyl acrylate, butyl methacrylate, and methacrylic acid, and the remaining initiator Agent peroxide-2-ethylhexyl, stirred to mix evenly to obtain a mixed solution;

[0047] (3) Add the above mixed solution dropwise into the reaction kettle at a constant speed of V=1.32kg / min. After compl...

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Abstract

The invention discloses a benzene-free ketone-free food grade thermoplastic resin and a preparation method thereof. The benzene-free ketone-free food grade thermoplastic resin comprises the following components by weight percent: 38-48wt% of methyl methacrylate, 2.5-3.5wt% of butyl acrylate, 2.5-3.5wt% of butyl methacrylate, 0.5-1.5wt% of methacrylic acid, 0.2-0.4wt% of peroxide-2-ethyl hexyl acrylate and 43.1-56.3wt% of n-propyl acetate. The benzene-free ketone-free food grade thermoplastic resin provided by the invention looks water-white, clear and transparent, can meet the requirements for food hygiene and safety, has no damage to human health and has the characteristics of excellent quick-drying effect, high hardness, excellent alcohol resistance, and the like.

Description

technical field [0001] The invention relates to a food-grade thermoplastic resin, a preparation method and a preparation process thereof, and belongs to the field of environmental protection paint preparation. Background technique [0002] Thermoplastic resin coating refers to a type of coating that uses thermoplastic resin as the main film-forming substance. The coating is dried by solvent volatilization to form a film. The dried paint film becomes soft when heated and hardens when cooled. Food containers and packaging usually need to be printed. For the sake of human health, food-grade printing ink coatings that meet food hygiene requirements must be used. [0003] The existing printing inks used for coating food-grade utensils, due to insufficient raw materials and process control, lead to the presence of harmful and toxic substances such as ketones and benzene in resin products, resulting in products that cannot meet the requirements of Class A materials in the "Hazardou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/06C09D133/12
CPCC08F220/14C09D133/12C08F220/1804C08F220/06
Inventor 邹广昌严水昌
Owner 汕头市金森源化工股份有限公司
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