阅读说明：本技术 脱漆组合物及其制备方法 (Paint removing composition and preparation method thereof ) 是由 朱会明 林泽聪 王泽继 于 2020-07-07 设计创作，主要内容包括：本申请涉及脱漆技术领域,提供了一种脱漆组合物及其制备方法。本申请提供的脱漆组合物包括醚、氯化钙和溶剂,醚的重量百分含量为50％-60％,氯化钙的重量百分含量为0.2％-0.5％。在本申请提供的脱漆组合物中,醚用于软化漆膜,氯化钙可进一步提高醚的渗透能力,采用氯化钙复配醚,可促进醚渗入到漆膜聚合物分子内部而引起漆膜快速软化溶胀,促进漆膜剥落,从而实现方便有效地脱除旧墙面漆而不损坏墙面的目的,且在使用该脱漆组合物脱除旧墙面漆后可直接涂装新的面漆,方便,省时省力,工作效率高。(The application relates to the technical field of paint removal, and provides a paint removal composition and a preparation method thereof. The paint removing composition provided by the application comprises 50-60 wt% of ether, 0.2-0.5 wt% of calcium chloride and a solvent. In the paint removing composition provided by the application, the ether is used for softening a paint film, the calcium chloride can further improve the penetrating power of the ether, the calcium chloride is used for compounding the ether, the ether can be promoted to permeate into the polymer molecules of the paint film to cause the paint film to be quickly softened and swelled, and the paint film is promoted to be peeled off, so that the aim of conveniently and effectively removing the old wall finish without damaging the wall surface is fulfilled, and a new finish can be directly coated after the old wall finish is removed by using the paint removing composition, so that the paint removing composition is convenient, time-saving and labor-saving, and high in working efficiency.)

1. The paint removing composition is characterized by comprising 50-60 wt% of ether, 0.2-0.5 wt% of calcium chloride and a solvent.

2. A paint stripping composition as claimed in claim 1 in which the ether is selected from propylene glycol butyl ether and/or dipropylene glycol butyl ether.

3. The paint stripping composition as claimed in claim 1, wherein the solvent of the paint stripping composition is water, and the paint stripping composition further comprises an emulsifier, the emulsifier being selected from nonionic surfactants.

4. A paint stripping composition as claimed in claim 3, characterized in that the emulsifier is selected from fatty alcohol polyglycol ethers and/or octanol polyoxyethylene ethers.

5. The paint stripping composition as claimed in claim 1, further comprising a defoamer selected from the group consisting of silicones and/or mineral oils; and/or

The paint stripping composition also comprises a bactericide, wherein the bactericide comprises at least one of 2-bromo-2-nitro-1, 3-propanediol, 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one.

6. A paint stripping composition as claimed in any one of claims 1 to 5, characterized in that the paint stripping composition consists of the following components in percentage by weight, based on the total weight of the paint stripping composition taken as 100%:

7. the paint stripping composition as claimed in claim 6, wherein the paint stripping composition consists of the following components in percentage by weight, based on 100% of the total weight of the paint stripping composition:

8. the paint stripping composition as claimed in claim 6, wherein the paint stripping composition consists of the following components in percentage by weight, based on 100% of the total weight of the paint stripping composition:

9. the paint stripping composition as claimed in claim 6, wherein the paint stripping composition consists of the following components in percentage by weight, based on 100% of the total weight of the paint stripping composition:

10. a method of preparing a paint stripping composition, comprising: dispersing ether and calcium chloride in a solvent, and mixing materials.

Technical Field

The application belongs to the technical field of paint removal, and particularly relates to a paint removal composition and a preparation method thereof.

Background

After the wall paint is coated for a plurality of years during house decoration, the problems of yellowing, dirtying, falling off and the like of a paint film are easy to occur, and the wall surface needs to be renovated at the moment. The original old wall finish paint is required to be removed when the wall surface is renovated, people often use a shovel to directly remove the original finish paint at the moment, and the operation method is low in working efficiency, easily causes the wall surface to be hollow, damages the flatness of the wall surface and influences the secondary refreshing of the wall surface.

The invention well solves the problem, can conveniently and effectively remove the finish paint of the water-based interior wall paint without damaging a putty layer by using the product of the invention, can directly coat the finish paint for the second time, and is convenient, trouble-saving, labor-saving and economical.

Disclosure of Invention

The application aims to provide a paint removing composition and a preparation method thereof, and aims to solve the problem that the wall surface is damaged due to the fact that a shovel is used for directly shoveling old wall finish paint at present.

In order to achieve the purpose of the application, the technical scheme adopted by the application is as follows:

in a first aspect, the present application provides a paint stripping composition comprising 50-60% by weight of ether, 0.2-0.5% by weight of calcium chloride, and a solvent.

In a second aspect, the present application provides a method of preparing a paint stripping composition, the method comprising: dispersing ether and calcium chloride in a solvent, and mixing materials.

The paint removing composition provided by the first aspect of the application comprises ether and calcium chloride with specific weights, wherein the ether is used for softening a paint film, the calcium chloride can further improve the penetrating capacity of the ether, the calcium chloride is adopted to compound the ether, the ether can be promoted to permeate into paint film polymer molecules to cause the paint film to be quickly softened and swelled, and the paint film is promoted to be peeled off, so that the purpose of conveniently and effectively removing the old wall finish without damaging the wall surface is achieved, and a new finish can be directly coated after the old wall finish is removed by using the paint removing composition, so that the paint removing composition is convenient, time-saving and labor-saving, and high in working efficiency.

According to the preparation method of the paint removing composition provided by the second aspect of the application, the ether and the calcium chloride are dispersed in the solvent and mixed, the method is simple, and the operation is simple and convenient. The paint removing composition formed by the method comprises ether and calcium chloride, improves the removing efficiency of the old wall finish, does not damage the wall surface, and is convenient, time-saving, labor-saving and high in working efficiency.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application more clearly apparent, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In this application, the term "and/or" describes an association relationship of associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a is present alone, A and B are present simultaneously, and B is present alone. Wherein A and B can be singular or plural.

The weight of the related components mentioned in the description of the embodiments of the present application may not only refer to the specific content of each component, but also represent the proportional relationship of the weight among the components, and therefore, the content of the related components is scaled up or down within the scope disclosed in the description of the embodiments of the present application as long as it is scaled up or down according to the description of the embodiments of the present application. Specifically, the mass described in the specification of the embodiments of the present application may be a mass unit known in the chemical industry field such as μ g, mg, g, kg, etc.

In a first aspect, embodiments of the present disclosure provide a paint stripping composition, including 50 wt% to 60 wt% of ether, 0.2 wt% to 0.5 wt% of calcium chloride, and a solvent.

The paint removing composition provided by the embodiment of the application comprises ether and calcium chloride with specific weight, wherein the ether is used for softening a paint film, the calcium chloride can further improve the penetrating capacity of the ether, the calcium chloride is adopted to compound the ether, the ether can be promoted to permeate into paint film polymer molecules to cause the paint film to be quickly softened and swelled, and the paint film is promoted to be peeled off, so that the purpose of conveniently and effectively removing the old wall finish without damaging the wall surface is achieved, and a new finish can be directly coated after the old wall finish is removed by using the paint removing composition, so that the paint removing composition is convenient, time-saving and labor-saving, and high in working efficiency.

Specifically, the ether is used as a main active ingredient for softening a paint film, the paint film has certain affinity and permeability, can permeate into the polymer molecules of the paint film to cause the paint film to soften and swell, and the paint film peels off when the internal stress generated along with the continuous increase of the volume of the paint film is greater than the adhesive force between the paint film and a wall body.

In some embodiments, the ether is selected from propylene glycol butyl ether and/or dipropylene glycol butyl ether, preferably propylene glycol butyl ether, which can rapidly soften old wall finishes and can further increase the effectiveness of the stripping composition in removing old wall finishes.

Calcium chloride belongs to strong acid and strong alkali salt, has slight corrosivity on the old wall paint, and can further improve the penetrating capability of ether on a paint film by compounding the calcium chloride with the ether, so that the paint removing composition provided by the embodiment of the application has good removing efficiency on the old wall paint.

In the paint stripping composition provided by the application, the weight of calcium chloride is 0.2-0.5% calculated by 50-60% of the weight of ether, so that the paint stripping composition has good stripping efficiency on old wall finish and prevents the wall surface from being damaged.

Solvents may be flexibly adjusted with reference to techniques conventional in the art, including but not limited to water, organic solvents, and the like, and specifically with reference to the specific composition of the stripping composition.

On the basis of compounding the ether and the calcium chloride with specific weight, the concrete composition of the paint removing composition is further adjusted in the embodiment of the application, so that the comprehensive performance of the paint removing composition is improved.

In some embodiments, the solvent of the paint stripping composition is water, and the paint stripping composition further comprises an emulsifier selected from the group consisting of nonionic surfactants. The emulsifier is added into the paint removing composition to promote the ether and water to be fully and uniformly mixed, so that the stability of a solution system is improved. The emulsifier may be selected as is conventional in the art, and in some embodiments, the emulsifier is selected as a fatty alcohol polyglycol ether and/or octanol polyoxyethylene ether. In a specific embodiment, the emulsifier is fatty alcohol polyglycol ether, and the product model is Genapol X080.

In some embodiments, the paint stripping composition further comprises an anti-foaming agent selected from the group consisting of silicone and/or mineral oil. In a particular embodiment, the defoamer is selected from BYK-024, specifically a hydrophobic solid in polyethylene glycol and a mixture of a defoaming polysiloxane. The defoaming agent is added into the paint removing composition to quickly defoam and reduce the contact angle between the paint removing composition and the paint film of the old wall finish paint, so that the old wall finish paint is fully wetted by the paint removing composition, and the removal efficiency of the old wall finish paint by the paint removing composition is improved.

In some embodiments, the paint stripping composition further comprises a biocide comprising at least one of 2-bromo-2-nitro-1, 3-propanediol, 5-chloro-2-methyl-4-isothiazolin-3-one (CIT), and 2-methyl-4-isothiazolin-3-one (MIT) to improve anti-corrosion performance of the paint stripping composition for storage. In a further embodiment, the biocide is selected from 2-bromo-2-nitro-1, 3-propanediol or a mixture of CIT and MIT.