CZ6069U1 - Composition for removing graffiti - Google Patents

Description

Graffiti removal agent

Technical field

The invention relates to a graffiti removal agent which is particularly suitable for removing graffiti from non-porous surfaces.

BACKGROUND OF THE INVENTION Graffiti are unwanted paintings and inscriptions on various buildings, vehicles and other objects. A great problem is the perfect graffiti removal without damaging the original substrate.

In the past, graffiti-removing products based on nitro-thinners or acetone-thinners have not proved to be particularly effective due to their low effectiveness and danger to human health and adverse environmental impacts.

Also, graffiti removal compositions containing dimethylketone, as described, for example, in U.S. Pat. No. 5,484,487, exhibit low efficiency, health and environmental defects, fire and explosion hazards, and generate chemical smog.

The essence of the technical solution

The task of the technical solution is to create even safely usable means for effective removal of graffiti even in a limited number of applications even in closed spaces without special measures, without damaging the surface on which the graffiti was made.

These requirements are met by a graffiti removal composition comprising 6 to 30 wt. parts by weight of a linear ether ester, preferably ethyl 3-ethoxypropionate, 10 to 50 wt. parts by weight of N-methyl-2'-pyrrolidone, 30 to 80 wt. parts of a mixture of dicarboxylic acid esters and 1 to 4 wt. parts of alkylphenol.

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This product removes graffiti from non-porous surfaces with high efficiency without damaging them, is fire-safe and has a relatively low volatility so that it does not produce chemical smog and is environmentally friendly.

In particular for brush application, it is preferred that the dicarboxylic acid esters consist of a mixture of dimethyl succinate, dimethyl adipate and dimethylglutarate, wherein the preparation further comprises 1 to 2 wt. parts of hydroxypropylcellulose. In particular, an advantage of a graffiti removal composition of this composition is that its application can be easily mechanized using available devices.

CZ 6069 Ul

Examples of technical solution

Example 1

The graffiti removal agent consists of 20 wt. parts by weight of ethyl 3-ethoxypropionate, 20 wt. parts by weight of N-methyl-2-pyrrolidone, 50 wt. parts by weight of a mixture of dicarboxylic acid esters and 2 wt. parts of alkylphenol.

The composition has been prepared by sequential addition of the individual components under constant stirring and is particularly suitable for application by a mechanical sprayer.

A continuous layer of the product is sprayed onto the dry surface of the graffiti. After 2 min, the effect is repeated and the dissolved graffiti is wiped with a dry cloth. This is repeated as necessary. After the graffiti has been removed, the surface is washed with water with an ionogenic surfactant preparation.

Example 2

A graffiti removal agent comprising 15 wt. parts by weight of ethyl 3-ethoxypropionate, 28 wt. 60 parts by weight of N-methyl-2-pyrrolidone; parts by weight of a mixture of dimethyl succinate, dimethyl adipate and dimethylglutarate and 1 wt. % by weight of hydroxypropylcellulose, was again prepared by successive addition of the individual components while stirring.

The graffiti removal composition of this composition is particularly suitable for application by a brush or an artificial fiber brush. The composition is applied to the dry surface of the graffiti. After 1 to 4 minutes of treatment at 20 ° C, the treated area is re-coated several times with a brush or brush dipped in a graffiti removal agent. At lower temperatures, the exposure time of the graffiti removal agent is prolonged. This graffiti removal agent is effective up to - 6 C. C. Dissolved graffiti is wiped with a brush or rag soaked in water with the addition of an ionic surfactant.

Claims (3)

CLAIMS 1. Graffiti removal agent, characterized in that it comprises from 6 to 30 wt. parts by weight of a linear ether ester, 10 to 50 wt. % of N-methyl-2-pyrrolidone, 30 to 80 wt. parts of a mixture of dicarboxylic acid esters and 1 to 4 wt. parts of alkylphenol. 2. A composition according to claim 1 wherein the linear ether ester is ethyl 3-ethoxypropionate. -2GB 6069 Ul Composition according to claim 1, characterized in that the dicarboxylic acid esters consist of a mixture of dimethyl succinate, dimethyl adipate and dimethylglutarate, the composition further comprising 1 to 2 wt. parts of hydroxypropylcellulose.