MXPA97004086A - Removing composition based on water and ani - Google Patents

Abstract

The present invention relates to paint, varnish or lacquer remover composition, characterized in that it comprises at least the following two constituents: 1) water, 2) anis

Description

COMPOSITION REMOVEDORfl ñ BRSE OF flGUn AND ftNISOL DESCRIPTIVE MEMORY The present invention refers to a demolition co-option, which is to make varnishes, which are known in the art as a lubricant. Paints and varnishes or lacquers are made of two mafia - by deposition or by nickel, or by applying them or applying them by brush or by spraying. They always contain a thickener and are used at temperaure, environment (20 ° 0), and are used for small tasks or for objects that are to be removed which can not be submerged. Removal by the general public, professional removal in consti- tion removal and in aeronautics. Restorers using immersion use cold baths (often based on metal chloride) or hot baths (frequently based on caustic soda.) They are used mostly Q for the removal in a large number of small items (industrial removal). A stripper composition which includes, in volume, from 1 to 20% of a polar polar solvent, such as tlirnotyl sulfoxide (DMSO) or N-rnet and 1 μirrolone (NMP), and 9 < 3 to 80% of 5 ether such as te-t-hydrofuran, is already known to part * of EP 0 0 726 An exciting composition includes, in volume, 1 to 20% of a polar aprotic solvency such as DMSO and NMP and of T. -t M0% of a f * ter that presents a flash point greater than D ° C, a molecular volume less than 150 and a molecule provided with one or more rhetoxy groups is already known from FP 05? ") 119, this ether can be especially anisole, although it is very important in its renovating action, these two However, although it does not have the disadvantage of being very fast, it is the addition of water to solvents or mixtures of solvents considered effective in the removal of paint. 1) at least one organic solvent chosen from ethyl acetate, methyl ketone and toluene, 2) water, 3) at least one thickener and 4) at least one surfactant. compositions is simply proportional to the amount of organic solvent used and no way is less than the effectiveness of the pure solvent. In the remover industry, therefore, there is a need to find other compositions whose cost is lower, but which is at least as affective as the compositions of the prior art. The Applicant has found that aqueous compositions of the water-to-sol type have a paint removal effectiveness that is superior to that of the anisole employed without water.

Very precisely, the present invention is applied to paint, varnish, or lacquer repair compositions, characterized in that it comprises at least the following two components. '• > 1) water, 2) sun ani .. This invention can be used in various areas of paint removal: removal of? Ntu? < ? s by trusting the public in 0 gene l, - professional removal in constructions, - removal of industrial paint, - removal of paint in aeronautics. The constituents are advantageously present in the following proportions: 1) water, from 10 to 90 parts by weight, 2) aniso, from 10 to 30 parts by weight. The constituents are preferably present in the following proportions: 0!) Water, from 70 to 80 parts by weight, 2) anisole, from 20 to 30 parts by weight. The composition according to the invention preferably contains one or a number of other chosen constituents of an activator, a thickener- and a corrosion inhibitor. The activator can be, for example, chosen from rnononoethanol amine, aqueous ammonia at a concentration of 10% forge and acid. rust ico. The weight can, for example, be a compound based on cellulose or a compound poi? Acr? 1 ico. The corrosion inhibitor can be, for example, '-odium benzoate. In addition to the above description, the invention will be better understood with the help of the following examples. In all these examples, unless otherwise indicated, the content of each constituent of the components is shown as a percentage by weight of the basis of the total weight of the item. - 1st.

EXAMPLE 1 Binary composition of water-anisole Paints from the automotive industry were used for the compositions in the industrial sector. The paints are polyester lacquers Herberts Glacier Uhite 38 < 3 supplied by the company Etalon (France). The thickness of the reverse is 35 to 45 microns. The metal panels used are made of phosphated steel and have a rectangular covered surface of 90 x 190 rnm. The performance on these panels can be generalized to other paints that are easier to remove than polyester paints, which is generally the < with gl i zero such i eo, alchemis and ac r i 11 cos. The i? S U 11 ados pa i -ecen in o 1 si gu iente 0uad ro T: TABLE I L5 0 1. - The compositions are ovenified in the form of emulsions. 2.- They are obtained by impregnation of a piece of absorbent cotton at a temperature of 20 ° W. * - Comparative tests.

EXAMPLE 2 0 Microemulsions The panels, the paints and their deposition are identical to those of Example 1. 5 The water-anisole compositions can be formulated as thickened emulsions or as my handcuffed croernulsions. The following formulation was prepared, the constituents being in quantities defined in parts in? - > so: - water 50. h - anisole Ir '- alcohol of ce tona LO - S'unaptol 15 7 - dodecyl' - sodium sulfate 7 - Met hoce11 Diacetone alcohol makes it easier to obtain an icroernulsion as well? A mixture of Sunaptol 16 (ethoxylated surfactant with 16 ethylene oxides, marketed by TCI) and dodecyl sulfate, another surfactant. Methocell is the thickener, It has been found that the formulation is effective due to its removal time of 500 seconds at 20 ° C, as a mixture of sulphate di dioxide / am sol / Met hocell (30/70). / 2 parts by weight) in the same panel removal test reported in example 1.

EXAMPLE 3 Emulsions The following formulation was prepared using Metox OE (Methyloyl ethoxylated with 15 units of ethylene oxide, marketed by Flf ntochem), the constituents being at the same time as the first one: 50 - water 47.5 - Metox 15 OE 2.5 The yield values obtained at 20 ° C are identical to those obtained with the prepared nuclear test without I hocellin but, in a way, with the same amounts of the constituents as in example 2, that is, a time of removal of 600 seconds.

Claims (4)

NOVELTY OF THE INVENTION CLAIMS

1. - Replenishing composition of nails, varnishes or lacquers, characterized in that it comprises at least the following two constituents: 1) water, 2) anisole. 2.- The composition in accordance with the regulation 1, fell actor in which the constituents are present in the following proportions: 1) water, from 10 to 90 parts by weight, 2) amsol, from 10 to 90 parts by weight. 3. The composition according to claim 2, characterized in that the constituents are present in the following proportions: 1) water, from 70 to 80 parts by weight, 2) aniso !, from 20 to 30 parts by weight. 4. The composition according to one of claims 1 to 3, characterized in that it contains one or a number of other constituents selected from an activator, a thickener and a corrosion inhibitor.