A kind of special latex for non-sticking lid of yogurt and its preparation method and application

A seed latex and latex technology, which is applied in the field of polymer materials, can solve the problem of yogurt being easily adhered to the yogurt cover, and achieve the effects of reducing the residual amount of monomers, improving the vacuum desorption effect and uniform particle size distribution.

Active Publication Date: 2017-11-07
HAINAN SHINER IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its innovation lies in: coating a layer of special latex for non-stick yogurt of the present invention on the surface of the yogurt lid to solve the problem that the yogurt is easy to stick to the yogurt lid

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Mixed monomer preparation: mix 80kg of vinylidene chloride, 12kg of methyl methacrylate, 7kg of methyl chlorosilane, 0.3kg of beeswax and 0.7kg of methacrylic acid, stir at high speed for 2 hours, and set aside;

[0022] (2) Emulsifier preparation: dilute 2 kg of sodium paraffin sulfonate with deionized water to 20 kg, stir and mix at high speed, and set aside;

[0023] (3) Initiator preparation: the sodium persulfate 160g is added in deionized water 8kg and stirred and mixed to make an initiator solution, for subsequent use;

[0024] (4) Seed polymerization reaction: Add 64kg of deionized water or soft water, 24g of auxiliary ammonium acetate, 1g of ferrous chloride, and 120g of seed polymerization emulsifier sodium dodecylbenzenesulfonate into a 200L reaction kettle, seal the kettle, and use Nitrogen replacement 5 times, vacuuming, inhalation of 5% (weight) of the mixed monomer prepared in step 1, cold dispersion for 1h, heating up to 45°C, and continuously pumpin...

Embodiment 2

[0028] (1) Mixed monomer preparation: mix 82 kg of vinylidene chloride, 8 kg of methyl methacrylate, 9 kg of phenylchlorosilane, 0.4 kg of beeswax and 0.6 kg of methacrylic acid, stir at high speed for 2 hours, and set aside;

[0029] (2) Emulsifier preparation: dilute 3 kg of sodium paraffin sulfonate with deionized water to 20 kg, stir and mix at high speed, and set aside;

[0030] (3) Initiator preparation: the sodium persulfate 180g is added in deionized water 8kg and stirred and mixed to make an initiator solution, for subsequent use;

[0031] (4) Seed polymerization reaction: Add 64kg of deionized water or soft water, 24g of auxiliary ammonium acetate, 1g of ferrous chloride, and 140g of seed polymerization emulsifier sodium dodecylbenzenesulfonate into a 200L reaction kettle, seal the kettle, and use Nitrogen replacement 5 times, vacuuming, inhalation of 5% (weight) of the mixed monomer prepared in step 1, cold dispersion for 1h, heating up to 45°C, and continuously pum...

Embodiment 3

[0035] (1) Mixed monomer preparation: mix 83kg of vinylidene chloride, 10kg of methyl methacrylate, 6kg of methyl vinyl chlorosilane, 0.4kg of beeswax and 0.6kg of methacrylic acid, stir at high speed for 2 hours, and set aside;

[0036] (2) Emulsifier preparation: dilute 4 kg of sodium paraffin sulfonate with deionized water to 20 kg, stir and mix at high speed, and set aside;

[0037] (3) Initiator preparation: the sodium persulfate 200g is added in deionized water 8kg and stirred and mixed to make an initiator solution, for subsequent use;

[0038] (4) Seed polymerization reaction: Add 64kg of deionized water or soft water, 24g of auxiliary ammonium acetate, 1g of ferrous chloride, and 160g of seed polymerization emulsifier sodium dodecylbenzenesulfonate into a 200L reaction kettle, seal the kettle, and use Nitrogen replacement 5 times, vacuuming, inhalation of 5% (weight) of the mixed monomer prepared in step 1, cold dispersion for 1h, heating up to 45°C, and continuously ...

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Abstract

The invention relates to a special latex for non-stick yogurt and its preparation method and application. The invention adopts a specific formula and process, so that the prepared latex has good barrier performance, prolongs the shelf life of yogurt, and has good waterproof performance , which solves the problem that yogurt is easy to stick to the yogurt lid, and the latex particle size distribution is uniform and has good stability. It can be stored at room temperature for 2 years without demulsification and precipitation. It is safe, environmentally friendly, and can be widely used in the yogurt packaging industry.

Description

technical field [0001] The invention relates to a special latex for non-stick yogurt and its preparation method and application, belonging to the field of polymer materials. Background technique [0002] With the rapid development of the economy and the continuous improvement of the quality of life, yogurt, as a fashionable and healthy drink, is more and more popular among people; and its diversified packaging design has attracted great attention. According to the properties of yogurt and the special purpose requirements of packaging, the selected packaging materials should have high strength, high barrier properties, good high and low temperature resistance, good weather resistance, good adaptability to packaging operations, hygiene and safety, and convenient packaging waste disposal. Etc. Therefore, currently on the market, plastic yogurt cups and yogurt lids made of aluminum foil composite film are very popular. [0003] However, this packaging also has shortcomings, tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/08C08F214/08C08F220/14C08F220/06C08F2/26C08F2/44
Inventor 方勇
Owner HAINAN SHINER IND
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