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A kind of preparation method of PVDC aqueous emulsion for coating

A water-based, emulsion technology, applied in the direction of coating, etc., can solve the problems that affect the product's thermal stability and anti-yellowing ability, unsuitable for industrial large-scale production, thermal stability, and poor anti-yellowing ability, etc., to achieve impact resistance High strength, not easy to crack, strong anti-yellowing ability

Active Publication Date: 2020-11-13
ZHEJIANG QUZHOU JUSU CHEM IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the process is complicated, the operation is cumbersome, the product has poor thermal stability and anti-yellowing ability, and it is not suitable for industrialized large-scale production
The disadvantage is that the process is complicated, the operation is cumbersome, and the addition of a large amount of rare earth additives increases the cost, which affects the high thermal stability and anti-yellowing ability of the product
The disadvantage is that the preparation method has many steps, is difficult to control, and is not suitable for industrialized large-scale production

Method used

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  • A kind of preparation method of PVDC aqueous emulsion for coating
  • A kind of preparation method of PVDC aqueous emulsion for coating
  • A kind of preparation method of PVDC aqueous emulsion for coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method for coating water-based PVDC emulsion, comprising the following steps:

[0036] (1) Prepare the raw materials for the reaction

[0037] The raw material formula is as follows:

[0038]

[0039]

[0040] (2) Configuration of initiator aqueous solution: Weigh 0.005kg of ammonium persulfate (APS), make ammonium persulfate aqueous solution I with 2kg of deionized water, and set aside; weigh 0.02kg of sodium metabisulfite (SMBS), and use 3kg of deionized water Water is made into sodium metabisulfite aqueous solution, and it is set aside; 0.017kg of ammonium persulfate (APS) is weighed, and 3kg of deionized water is made into ammonium persulfate aqueous solution II, and set aside;

[0041] (3) Configure the premix: mix 49.51kg of vinylidene chloride monomer, 2.91kg of methyl acrylate, 2.91kg of butyl acrylate, 2.33kg of itaconic acid, 0.58kg of acrylic acid, 0.41kg of octadecyl Potassium dodecyl carboxylate of sodium sulfate, 0.41kg, sodium pentad...

Embodiment 2

[0046] A preparation method for coating water-based PVDC emulsion, comprising the following steps:

[0047] (1) Prepare the raw materials for the reaction

[0048] The raw material formula is as follows:

[0049]

[0050]

[0051] (2) Configure the initiator aqueous solution: weigh 0.017kg of ammonium persulfate (APS), and use 2kg of deionized water to prepare ammonium persulfate aqueous solution I, for later use; weigh 0.01kg of sodium metabisulfite (SMBS), and use 3kg of deionized water Water is configured into sodium pyrosulfite aqueous solution, for subsequent use; 0.008kg of ammonium persulfate (APS) is weighed, and 3kg of deionized water is configured into ammonium persulfate aqueous solution II, for subsequent use;

[0052] (3) Configure the premix: 49.2kg of vinylidene chloride monomer, 1.7kg of 2-ethylhexyl acrylate, 2.5kg of methyl methacrylate, 2.5kg of itaconic acid, 0.57kg of acrylic acid, Add 0.34kg of sodium lauryl sulfate, 0.34kg of alcohol ether carbox...

Embodiment 3

[0057] A preparation method for coating water-based PVDC emulsion, comprising the following steps:

[0058] (1) Prepare the raw materials for the reaction

[0059] The raw material formula is as follows:

[0060]

[0061]

[0062] (2) Configure initiator aqueous solution: take by weighing 0.007kg of ammonium persulfate, configure ammonium persulfate aqueous solution I with 2kg of deionized water, and set aside; take 0.014kg of sodium metabisulfite (SMBS), and configure it with 3kg of deionized water Sodium pyrosulfite aqueous solution, for subsequent use; Weigh 0.012kg of ammonium persulfate (APS), and use 3kg of deionized water to configure ammonium persulfate aqueous solution II, for subsequent use;

[0063] (3) Configure the premix: 49.6kg of vinylidene chloride monomer, 1.7kg of ethyl methacrylate, 0.6kg of methyl acrylate, 1.1kg of itaconic acid, 2.9kg of vinyl acetate, 0.7kg of Alcohol ether carboxylate, 0.7kg of potassium pentadecyl carboxylate, 0.02kg of potass...

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Abstract

The invention discloses a preparation method for coating PVDC (polyvinyl dichloride) waterborne emulsion. The method includes the steps: (1) preparing reaction raw materials; (2) preparing initiator water solution; (3) preparing premixed liquid; (4) polymerizing seed emulsion; (5) polymerizing PVDC emulsion; (6) desorbing the emulsion. Hard pieces such as PVC (polyvinyl chloride), PET (polyethylene terephthalate), nylon and PCT (polycaprolactam) are coated with the PVDC waterborne emulsion prepared by the method to prepare composite hard pieces, and the composite hard pieces have the advantages that the composite hard pieces are high impact strength and heat stability, good in barrier property and high in yellow-resistant ability, do not easily generate cracks, cannot dissolve out harmfulsubstances and can directly contact with drugs and the like.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a method for preparing a PVDC aqueous emulsion for coating. Background technique [0002] PVC, PET, nylon, PCT and other hard sheets have uniform thickness, good sealing performance, fast heat sealing, easy molding, low price, anti-ultraviolet and radiation resistance, and have been widely used in tablets, capsules, injections, oral liquids and other medicines Internal and external packaging, but hard sheets such as PVC, PET, nylon, and PCT have defects such as poor barrier properties and easy oxidation failure of drugs. As a plastic packaging material, PVDC has the advantages of portability, no leaching of harmful substances, direct contact with food and drugs, high barrier property, low price, and convenient promotion. It has been widely used in the field of drug and food packaging. At present, PVDC emulsion is widely used in the field of food and pharmaceutical pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D127/08C09D7/65C09D7/63C08F265/06C08F214/08C08F220/14C08F220/18C08F220/06C08F222/02C08F218/08
CPCC08F265/06C08K5/101C08K5/521C08L2201/08C08L2205/03C09D7/63C09D7/65C09D127/08C08L83/04C08L71/02C08K5/523C08F214/08
Inventor 韩金铭尹作柱吴志刚苏兰辉吴宇鹏吕颖琦赵鑫犇马从礼
Owner ZHEJIANG QUZHOU JUSU CHEM IND CO LTD
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