High-binding-power odor-removing water-based vacuum plastic emulsion and preparation method thereof

A vacuum forming, high cohesive technology, applied in the direction of adhesives, adhesive types, graft polymer adhesives, etc. Problems such as instability of the plastic system

Active Publication Date: 2020-06-16
福建华夏蓝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the water-based ethylene-vinyl acetate emulsion is less stable under neutral or weakly alkaline conditions than under weakly acidic conditions, increasing the amount of organic amine neutralizer may cause the water-based vacuum suction plastic system to be unstable
Therefore, some manufacturers use water-based acrylate emulsion instead of water-based ethylene-vinyl acetate emulsion, which can perfectly solve the problem of continuous release of acetic acid and ensure the performance of water-based vacuum plastic. However, due to incomplete polymerization of water-based acrylate emulsion, there is a small amount of acrylate monomer. body residue, although the smell is low, but in essence, it will pose a greater threat to the health of the operator
[0005] For the solvent acetone residue of water-based polyurethane dispersion in water-based vacuum plastic glue, although those skilled in the art have carried out a lot of explorations, there has been no good solution all the time, which is mainly due to the use of acetone method for water-based polyurethane dispersion. Excellent performance and process stability, while other methods at this stage cannot achieve the balance of performance and process stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The preparation method of described high cohesive force deodorant water-based vacuum-absorbing plastic latex is:

[0056] (1) Add 1mol of polyoxyethylene polyoxypropylene ether (EO-40-co-PO-5) into the reactor, heat up to 150°C, vacuumize to remove moisture until the weight ratio of moisture is 0.08%; cool down to 40°C , 2mol hexamethylene diisocyanate was added to the reactor, and the temperature was raised to 60°C. After 8 hours of reaction, 0.4mol was added from 0.1mol methyl acrylate, 0.2mol butyl methacrylate, 0.02mol methacrylic acid and 0.08mol The mixture composed of ethyl acrylate reduces the viscosity of the system. At the same time, 0.1mol 2,2-dimethylol propionic acid is added dropwise, and the temperature is raised to 50°C. After 3 hours of reaction, the temperature is lowered to 35°C; 1.8mol hydroxyethyl acrylate is added dropwise, and the temperature is raised to After reacting at 75°C for 2 hours, the temperature was lowered to 50°C to obtain a double-bo...

Embodiment 2

[0060] The preparation method of described high cohesive force deodorant water-based vacuum-absorbing plastic latex is:

[0061] (1) Add 1 mol of polyneopentyl glycol adipate 1000 (NPGA1000) into the reaction kettle, raise the temperature to 110°C, remove the water by vacuuming until the weight ratio of water is 0.05%; cool down to 40°C, and add 1.7 mol of Phorone diisocyanate was added to the reactor, and the temperature was raised to 100°C. After 1 hour of reaction, 1 mol of 0.3 mol methyl methacrylate, 0.4 mol butyl acrylate, 0.05 mol acrylic acid and 0.25 mol acrylic acid (2-ethyl- The mixture composed of 1-hexyl) ester reduces the viscosity of the system. At the same time, 0.08mol of 2,2-dimethylolbutyric acid is added dropwise, the temperature is raised to 70°C, and the temperature is lowered to 30°C after 0.5 hours of reaction; 3.7mol of methacrylic acid hydroxyl Ethyl ester, heated up to 60°C and reacted for 4 hours, then cooled to 40°C to obtain a double-bond-terminat...

Embodiment 3

[0065] The preparation method of described high cohesive force deodorant water-based vacuum-absorbing plastic latex is:

[0066] (1) Add 1mol polyneopentyl glycol adipate 2500 (NPGA2500) into the reaction kettle, heat up to 130°C, vacuumize to remove moisture until the weight ratio of moisture is 0.09%; cool down to 40°C, add 2.1mol Phenylmethane diisocyanate was added to the reactor, and the temperature was raised to 80°C. After 6 hours of reaction, 0.8mol of 0.3mol of methyl methacrylate, 0.2mol of ethyl acrylate, 0.08mol of acrylic acid and 0.22mol of acrylic acid (2-ethyl -1-hexyl) ester mixture to reduce the viscosity of the system, at the same time dropwise add 0.1mol 2,2-dimethylolbutyric acid, raise the temperature to 70°C, cool down to 30°C after reacting for 0.5 hours; add dropwise 2.5mol hydroxypropyl acrylic acid ester, heated up to 80°C and reacted for 2 hours, then cooled down to 45°C to obtain a double-bond-terminated polyurethane solution;

[0067] (2) Stir 1m...

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PUM

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Abstract

The invention relates to a high-adhesion odor-removing water-based vacuum plastic emulsion and a preparation method thereof. The main component of the high-adhesion odorless water-based vacuum plasticemulsion is an imidazolyl propionate modified polyurethane compound, imidazolyl propionate has strong surface affinity with low surface tension, the rigidity is large, cohesive energy is high, and high adhesion force can be provided; residual acrylate, imidazole and derivatives thereof are subjected to an addition reaction in the synthesis process; obtained odorless, odorless and non-volatile small molecules can be used as a wetting agent to be rapidly spread on the surface of a base material, meanwhile, one end of the small molecules serving as an interface agent closely acts on the base material, the other end of the small molecules is combined with a polymer containing an imidazole structure, and the adhesive force of the polymer on the surface of the base material is improved. The water-based vacuum plastic emulsion is solvent-free, odorless, high in binding power and simple and convenient in post-treatment.

Description

technical field [0001] The invention relates to a water-based vacuum-absorbing plastic latex with high cohesive force and deodorization and a preparation method thereof. Background technique [0002] Water-based vacuum plastic is widely used in the lamination of PVC, PP and other soft films with MDF, particle board, multi-layer board, wood and other materials. Various color decorations and three-dimensional lines can be printed on the film, and the board produced by vacuum blister technology presents an aesthetic feeling that ordinary boards cannot achieve, and is very popular among people. [0003] Conventional water-based vacuum blisters are made by mixing water-based polyurethane dispersions with water-based ethylene-vinyl acetate emulsions. Water-based polyurethane emulsion is usually synthesized by the acetone method. Although most of the acetone will be distilled out later, there will still be about a small amount of acetone remaining in the system. Although ethylene...

Claims

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Application Information

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IPC IPC(8): C09J151/08C08F283/00C08F218/02C08F220/06C08F220/14C08F220/18C08G18/66C08G18/48C08G18/34C08G18/67C08G18/42
CPCC08F283/008C08G18/348C08G18/4238C08G18/4837C08G18/6659C08G18/6692C08G18/672C08G2170/80C09J151/08C08F220/06C08F220/14
Inventor 邱元进饶长贵陈国栋
Owner 福建华夏蓝新材料科技有限公司
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