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Polyvinyl dichloride (PVDC) latex special for slick paper used for food packaging and preparation method thereof and application thereof

A food packaging and glossy technology, which is applied in the direction of textiles and papermaking, papermaking, paper coating, etc., to achieve the effect of improving stability, good wrapping, and good stability

Active Publication Date: 2013-04-24
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Glossy paper can be used as a packaging material because of its soft texture, smooth surface, printability, and low cost. In order to make it meet food packaging standards, it needs to be improved in terms of oxygen resistance, water resistance, and oil resistance. There are few reports on polyvinylidene chloride latex coated glossy paper to improve its oxygen barrier, water barrier, oil resistance and other characteristics.

Method used

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  • Polyvinyl dichloride (PVDC) latex special for slick paper used for food packaging and preparation method thereof and application thereof
  • Polyvinyl dichloride (PVDC) latex special for slick paper used for food packaging and preparation method thereof and application thereof
  • Polyvinyl dichloride (PVDC) latex special for slick paper used for food packaging and preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Special PVDC latex for glossy paper, the total weight of the copolymerization system is 200kg, and the mixed monomer accounts for 110kg;

[0036] Vinylidene chloride 98.45kg;

[0037] Acrylonitrile 11kg;

[0038] Acrylic acid 0.55kg;

[0039] Additives: 24g ammonium acetate and 0.8g ferrous chloride;

[0040] Initiator: 160g of tert-butyl hydroperoxide and 160g of sodium formaldehyde sulfoxylate;

[0041] Mixed emulsifier: 1.2kg for COPS-1 and 0.6kg for 2A-1 emulsifier;

[0042] Seed emulsifier: sodium dodecylbenzenesulfonate 80g;

[0043] The specific operation process is:

[0044] 1) Preparation of raw materials:

[0045] (1) The preparation of mixed monomers, mix above-mentioned vinylidene chloride and acrylonitrile, stir 2h, set aside;

[0046] (2) The preparation of mixed emulsifier, the above-mentioned COPS-1 and 2A-1 emulsifier and acrylic acid are added to 10 parts of water to make emulsifier solution, and set aside;

[0047] (3) the preparation of initi...

Embodiment 2

[0057] Special PVDC latex for glossy paper, the total weight of the copolymerization system is 200kg, and the mixed monomer accounts for 116kg;

[0058] Vinylidene chloride 104.4kg;

[0059] Acrylonitrile 11.37kg;

[0060] Acrylic acid 0.23kg;

[0061] Additives: 30g of ammonium acetate and 1g of ferrous chloride;

[0062]Initiator: 320g of tert-butyl hydroperoxide and 320g of sodium formaldehyde sulfoxylate;

[0063] Mixed emulsifier: 1.4kg for COPS-1 and 1kg for 2A-1 emulsifier

[0064] Seed emulsifier: sodium dodecylbenzenesulfonate 180g;

[0065] The specific operation process is:

[0066] 1) Preparation of raw materials: The preparation of mixed monomers, reactive emulsifiers, and initiators is the same as in Example 1.

[0067] 2) Seed polymerization reaction: add deionized water to the reaction kettle, add additives and seed emulsifier, seal the kettle, replace the air in the reaction kettle with nitrogen three times, vacuumize, inhale 3% mixed monomer of seed mon...

Embodiment 3

[0070] Special PVDC latex for glossy paper, the total weight of the copolymerization system is 200kg, and the mixed monomer accounts for 120kg;

[0071] Vinylidene chloride 111kg;

[0072] Acrylonitrile 8.77kg;

[0073] Acrylic acid 0.23kg;

[0074] Additives: 36g of ammonium acetate and 1.2g of ferrous chloride;

[0075] Initiator: 400g of tert-butyl hydroperoxide and 400g of sodium formaldehyde sulfoxylate;

[0076] Mixed emulsifier: 1.6kg for COPS-1 and 1.4kg for 2A-1 emulsifier;

[0077] Seed emulsifier: sodium dodecylbenzenesulfonate 400g;

[0078] The specific operation process is:

[0079] 1) Preparation of raw materials: The preparation of mixed monomers, reactive emulsifiers, and initiators is the same as in Example 1.

[0080] 2) Seed polymerization reaction: Add deionized water to the reactor, add additives and seed emulsifier, seal the reactor, replace the air in the reactor with nitrogen for three times, vacuumize, inhale 3% mixed monomer, and cold disperse ...

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Abstract

The invention discloses a polyvinyl dichloride (PVDC) latex special for slick paper used for food packaging and a preparation method thereof and application thereof. The PVDC latex is obtained by a mixed monomer, an auxiliary, an initiating agent, a mixed type emulsifying agent and a seeded emulsifying agent, wherein the mixed monomer contains vinylidene chloride, vinyl cyanide and acrylic acid, the mixed type emulsifying agent contains a COPS-1 emulsifying agent and a 2A-1 emulsifying agent, and the seeded emulsifying agent contains sodium dodecyl benzene sulfonate. Due to the facts that according to the PVDC latex, the mixed type emulsifying agent containing reaction type emulsifying agents is adopted, and the acrylic acid is added together with the reaction type emulsifying agents in an emulsion polymerization stage, the prepared PVDC latex is good in stability. Microcrystalline wax which has a function of defoaming enables monomer residual volume in the latex to be lower. The slick paper coated with the PVDC latex is environment-friendly, degradable, good in barrier property and oil resistance, capable of reaching an effect of aluminum foil packaging materials when serving as packaging materials, and capable of being used for food packaging. When coating amount of the latex is 12g / m2, steam transit amount is less than or equal to 3g / m2.24h and oxygen permeability is less than or equal to 7g / m2.24h. When the coating amount is added to be 15g / m2, effects of aluminum foil packaging materials which are used for food packaging can be achieved.

Description

technical field [0001] The invention relates to a PVDC latex, in particular to a special PVDC latex for glossy paper used in food packaging and a preparation method and application thereof, belonging to the field of polymer materials. Background technique [0002] Aluminum foil wrapping paper materials are used in food, cigarettes, and pharmaceutical packaging because of their advantages such as moisture-proof, air-tight, light-shielding, corrosion-resistant, fragrance-preserving, non-toxic, tasteless, and beautiful. However, aluminum foil wrapping paper materials are expensive and difficult to print , non-degradable, technically difficult to recycle, not environmentally friendly. Currently, high-barrier coated packaging films such as polyvinylidene chloride latex coated packaging films have been used in the packaging of cigarettes, medicines, and food. [0003] Glossy paper can be used as a packaging material because of its soft texture, smooth surface, printability, and l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/08C08F220/44C08F220/06C08F2/26D21H19/20
Inventor 方勇邢青涛
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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