Unlock instant, AI-driven research and patent intelligence for your innovation.

One-component removable water-based pressure-sensitive adhesive and preparation method thereof

A single-component, pressure-sensitive adhesive technology, applied in the field of pressure-sensitive adhesives, can solve problems such as storage stability, poor centrifugal stability, human health hazards, organic volatilization, etc., to achieve improved centrifugal stability and storage stability, and reduce curing Speed, no effect of organic matter volatilization

Active Publication Date: 2021-08-31
上海宗特化工有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, volatile organic compounds such as toluene and benzene are used as solvents. These solvents will directly volatilize into the atmosphere during use to pollute the environment and endanger the health of workers. Therefore, many foreign government departments have issued laws and regulations to restrict the use of volatile organic compounds. Residual solvents are harmful to human health
At present, the two-component solvent-based pressure-sensitive adhesive used in mainstream removable stickers has environmental protection problems, and a large amount of organic matter volatilizes. In addition, the solvent-type uses isocyanate curing agent, which has a fast curing speed and must be cured after adding Use up within 2-3 hours after dose, inconvenient to use
[0004] The one-component removable water-based pressure-sensitive adhesive is coated on the release paper and dried, and then laminated with PP synthetic paper, coated paper, and PET film. The one-component removable water-based pressure-sensitive adhesive is prone to residual glue. Or its peel strength is very low, and at the same time, it spreads on the release paper, and its storage stability and centrifugal stability are poor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • One-component removable water-based pressure-sensitive adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0103] The second aspect of the present invention provides a method for preparing the above-mentioned one-component removable water-based pressure-sensitive adhesive, comprising the following steps:

[0104] S1: Take 6 / 13 parts by weight of distilled water and put it into an emulsification kettle, add an emulsifier, then add a comonomer, and emulsify to obtain an emulsion;

[0105] S2: Put the buffer and the remaining 7 / 13 parts by weight of distilled water in the reaction kettle, add 1 / 44 volume of the emulsion in step S1, heat up, and add 1 / 5 parts by weight of the initiator;

[0106] S3: Mix the remaining four-fifths of the weight of the initiator into the remaining forty-three-forty-fourths volume of the emulsion in step S1, add it dropwise to the reaction kettle, keep the temperature after the dropwise addition, cool down to room temperature, and add moistening solution in turn. Wet agent, defoamer, adjust the pH to 7.5-8.5 with ammonia water, and compound glue to obtain ...

Embodiment 1

[0116] Example 1 provides a one-component removable water-based pressure-sensitive adhesive. In parts by weight, the raw materials for the preparation of the one-component removable water-based pressure-sensitive adhesive include 1 part of emulsifier and 80 parts of comonomer , 0.02 parts of buffer, 0.2 parts of initiator, 0.05 parts of wetting agent, 0.05 parts of defoamer, 50 parts of distilled water;

[0117] Described emulsifier is sodium dodecyl diphenyl ether disulfonate (CAS No. is 7575-62-4), and the trade mark is

[0118] The comonomer is isooctyl acrylate (CAS No. 103-11-7), methyl methacrylate, styrene, N-methylolacrylamide (CAS No. 924-42-5), methyl A mixture of acrylic acid and glycidyl methacrylate (CAS No. 106-91-2); said isooctyl acrylate, methyl methacrylate, styrene, N-methylol acrylamide, methacrylic acid, methyl The mass ratio of glycidyl acrylate is 92.5:2:1:1:1.5:2;

[0119] Described buffering agent is sodium bicarbonate;

[0120] Described initiator ...

Embodiment 2

[0128] Example 2 provides a one-component removable water-based pressure-sensitive adhesive. In parts by weight, the raw materials for the preparation of the one-component removable water-based pressure-sensitive adhesive include 5 parts of emulsifier and 120 parts of comonomer , 0.1 part of buffer, 1 part of initiator, 0.2 part of wetting agent, 0.2 part of defoamer, 80 parts of distilled water;

[0129] The emulsifier is sodium dodecyl diphenyl ether disulfonate (CAS No. 7575-62-4);

[0130] Described comonomer is with embodiment 1;

[0131] Described buffering agent is sodium bicarbonate;

[0132] Described initiator is ammonium persulfate;

[0133] Described wetting agent is with embodiment 1;

[0134] Described defoamer is with embodiment 1.

[0135] The preparation method of the one-component removable water-based pressure-sensitive adhesive is the same as that in Example 1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of pressure-sensitive adhesives, in particular to a single-component removable water-based pressure-sensitive adhesive and a preparation method thereof. In parts by weight, the raw materials for the preparation of the one-component removable water-based pressure-sensitive adhesive include at least 1-5 parts of emulsifier, 80-120 parts of comonomer, 0.02-0.1 part of buffer, and 0.2-1 part of initiator. 0.05-0.2 parts of wetting agent, 0.05-0.2 parts of defoamer, 50-80 parts of distilled water. The one-component removable water-based pressure-sensitive adhesive prepared by the invention not only solves the problem of thickening caused by long-term use, but also solves the problem of adhesion to the substrate after drying, and can not only ensure higher peel strength but also No glue residue; the one-component removable water-based pressure-sensitive adhesive prepared by the invention is green and environmentally friendly, has no volatilization of organic matter, can reduce the curing speed, is convenient to use, and the water-based pressure-sensitive adhesive will not spread on the release paper, At the same time, the centrifugal stability and storage stability are significantly improved.

Description

technical field [0001] The invention relates to the field of pressure-sensitive adhesives, in particular to a single-component removable water-based pressure-sensitive adhesive and a preparation method thereof. Background technique [0002] Pressure-sensitive adhesive refers to a type of adhesive that can be bonded to an adherend under external pressure. At present, it is widely used in industries such as sealing tape, labels, protective tape and decorative panels. The peel strength of the pressure-sensitive adhesive mainly depends on the adhesion of the polymer and the adhesion of the colloid to the bonding surface. There is also the right balance. Traditional pressure-sensitive adhesive products have poor cohesion, poor adaptability to substrates of different polarities, and poor temperature resistance, resulting in defects in product adhesion and weather resistance, especially for water-based products. [0003] The application market of adhesives for removable self-adh...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C09J133/08C09J133/12C08F220/18C08F220/14C08F212/08C08F220/58C08F220/06C08F220/32C08F2/26C09J7/38
CPCC08F2/26C08F220/14C08F220/18C09J133/064C09J7/385
Inventor 周波陈永良
Owner 上海宗特化工有限公司