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Preparation method for coating PVDC (polyvinyl dichloride) waterborne emulsion

A water-based, emulsion technology, applied in coatings and other directions, can solve the problems of affecting the thermal stability and anti-yellowing ability of products, unsuitable for industrialized large-scale production, poor thermal stability and anti-yellowing ability, etc., and achieve impact resistance. High strength, not easy to crack, strong anti-yellowing ability

Active Publication Date: 2018-08-17
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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  • Preparation method for coating PVDC (polyvinyl dichloride) waterborne emulsion
  • Preparation method for coating PVDC (polyvinyl dichloride) waterborne emulsion
  • Preparation method for coating PVDC (polyvinyl dichloride) waterborne emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0036] (1) Prepare reaction materials for use

[0037] The raw material formula is as follows:

[0038]

[0039]

[0040] (2) Configure the initiator aqueous solution: Weigh 0.005kg of ammonium persulfate (APS), use 2kg of deionized water to make ammonium persulfate aqueous solution I, for use; weigh 0.02kg of sodium metabisulfite (SMBS), use 3kg of deionized The water is mixed into sodium metabisulfite aqueous solution for use; 0.017kg of ammonium persulfate (APS) is weighed and 3kg of deionized water is used to make ammonium persulfate aqueous solution II for use;

[0041] (3) Premix solution: 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 Sodium sulfate, 0.41kg potassium dodecyl carboxylate, 0.82kg sodium pentadecylbenzene sulfonate, 0.02kg sodium bicarbonate, 0.02...

Embodiment 2

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

[0047] (1) Prepare reaction materials for use

[0048] The raw material formula is as follows:

[0049]

[0050]

[0051] (2) Prepare the initiator aqueous solution: Weigh 0.017kg of ammonium persulfate (APS), use 2kg of deionized water to prepare ammonium persulfate aqueous solution I, for use; weigh 0.01kg of sodium metabisulfite (SMBS), use 3kg of deionized The water is prepared into an aqueous solution of sodium metabisulfite for standby; 0.008 kg of ammonium persulfate (APS) is weighed, and 3 kg of deionized water is used to prepare an aqueous solution of ammonium persulfate II for standby;

[0052] (3) Premixed solution: mix 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, 0.34kg of sodium lauryl sulfate, 0.34kg of alcohol ether carboxylate, 0.34kg of potassium lauryl carboxylate,...

Embodiment 3

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

[0058] (1) Prepare reaction materials for use

[0059] The raw material formula is as follows:

[0060]

[0061]

[0062] (2) Prepare the initiator aqueous solution: weigh 0.007kg of ammonium persulfate, use 2kg of deionized water to prepare ammonium persulfate aqueous solution I, for use; weigh 0.014kg of sodium metabisulfite (SMBS), use 3kg of deionized water to prepare Sodium metabisulfite aqueous solution, ready for use; Weigh 0.012kg of ammonium persulfate (APS), and use 3kg of deionized water to prepare an ammonium persulfate aqueous solution II, ready for use;

[0063] (3) Premixed solution: mix 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 potassium pentadecyl carboxylate, 0.02kg potassium bicarbonate, 0.01kg ammonium acetate and 4.4kg deion...

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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 specifically relates to a method for preparing a PVDC aqueous emulsion for coating. Background technique [0002] PVC, PET, nylon, PCT and other hard films have uniform thickness, good sealing performance, fast heat sealing, easy molding, low price, UV resistance and radiation resistance. They have been widely used in tablets, capsules, injections, oral liquids and other drugs. Internal and external packaging, but PVC, PET, nylon, PCT and other rigid films have defects such as poor barrier properties, resulting in easy oxidation and failure of drugs. As a plastic packaging material, PVDC has the advantages of portability, no dissolution of harmful substances, direct contact with food and drugs, high barrier properties, low price and convenient promotion. It has been widely used in the field of pharmaceutical and food packaging. At present, PVDC emulsions are widely used in the food and pharmaceut...

Claims

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Application Information

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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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