JPS605969A - Release composition and peeling-off of old wall - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Generally, after more than 10 years have passed in a house, the interior walls such as fiber walls inside the house become old, deteriorating the aesthetic appearance and at the same time deteriorating the livability of the house. This makes it necessary to remove the front wall and repaint it.

Conventionally, so-called smudge removal methods have been used, such as scraping off dirt while it is dry, applying water with a brush, or spraying water using a mist sprayer to absorb moisture and swell before scraping off.

If it gets wet, it will fall on the floor, staining the floor, and you will have to raise the rice cake.Also, it is difficult to absorb moisture evenly, so if you scrape it off while it is dry, dust will stand up and stain furniture and fittings. Trouble arises.

Therefore, it was quite a tedious job to move the furniture and fixtures to a separate room, raise the tatami mats, and clean them up.

In view of this situation, the present inventor has arrived at the present invention, which improves the peel strength of the front wall.

That is, an object of the present invention is to provide a method by which a front wall can be easily peeled off, and a stripping agent composition used therein. composition and for this composition 50-30
In this method, a gel-like material made by adding 0 times as much water and mixing it uniformly is applied uniformly to the front wall (L1) and is peeled off together with the front wall after the water has permeated.

The water-absorbing resin used in the present invention is polyacrylate.

Starch-acrylonitrile graft copolymer and its hydrolyzate, carboxymethyl cellulose.

Polyvinyl alcohol, methyl (meth)acrylate
These include crosslinked products such as a hydrolyzate of vinyl acetate copolymer and a cellulose-sodium acrylate graft copolymer, among which a crosslinked product of polyacrylate can exhibit excellent effects. Both are insoluble in water and can absorb and contain several hundred times as much water, and this water can be applied to the front wall to moisten it. I'm doing it. Of course, the peeling effect of the present invention can be achieved with the water-absorbing resin alone, but it is difficult to apply it on old walls in terms of handling, and the water-absorbing resin is colorless and difficult to distinguish, so it is desirable to mix in a suitable powder or granules.

It is usually mixed with inorganic powders such as talc, calcium chloride, gypsum, ore powder, but it is not limited to these, and sand, wall clay, etc. can also be used, and wood powder, plastic powder, grain flour, etc., which are limited to inorganic substances, can also be used. You can also do that.

The mixing method with these powders is not particularly limited, and ordinary mixing methods such as a stirring bar, mixer, and blender may be used.

To the thus mixed composition, add 50 to 300 times as much water and use a stirring rod or a stirrer such as a hand mixer to mix it uniformly to form a gel-like substance, then proceed in the same manner as when painting walls. Apply it on the front wall with a trowel or spatula.

The amount of water added at this time varies depending on the type of wall to be peeled, the time required for peeling, etc., but it is usually appropriate to use 50 to 300 times as much water, preferably 100 to 150 times as much water. If there is too little water, it will not be possible to provide sufficient moisture to the front wall, and if there is too much water, it will be difficult to apply it evenly.Of course, the amount of water depends on the amount of water absorbent resin that forms the composition, and it is normal for the water absorbent resin. It is desirable to add 200 to 800 times more water.

As mentioned above, the water-absorbing resin can contain several hundred times as much water, and this water permeates the front wall, making it easy to peel off. Moreover, unlike the conventional method of applying C water using a brush or sprayer, it does not become sticky and can be removed in a relatively smooth and dehydrated state. Although its mechanism of action is not fully understood, after 5 to 3 hours, preferably 10 to 30 minutes, after applying it to the front wall, it becomes integrated with the stripping agent composition of the present invention and can be used with a trowel or spatula without dripping. The fact that it can be peeled off as easily as continuous peeling using the back side can be said to be a novel invention that skillfully utilizes the properties of water-absorbing resin, which has never been seen before.

Knee (D Yo5 +: Old front wall) It can be easily peeled off, and as mentioned above, it becomes smooth and dehydrated after application, so even if it spills, it will not stain the floor. The time required to reach this state varies depending on the type of front wall, the type of water-absorbing resin, the amount of water added, etc., but is usually about 10 to 30 minutes as described above.

Therefore, compared to using a conventional mist sprayer, there is no need to open the tatami mats, put away the furniture, and remove the fittings, and the work can be easily done using mats or newspapers, making it possible to easily repaint fiber walls in a clean condition while still living in the house. The effect is remarkable because it can be done.

This is especially effective in the case of apartments and small houses where, due to recent housing conditions, there is no space to put up tatami mats in the living space or clean up the house.

The present invention will be explained in more detail with reference to Examples below.

Example Sodium polyacrylate cross-linked powder (Key points: Chemistry@
) m, trade name: Aqua Keep 48) and commercially available powdered talc were uniformly mixed in equal amounts using a blender to prepare a release agent composition.

90 g of this was taken and gradually added to a poly bucket containing 10 parts of water while stirring with a hand mixer to form a uniform gel-like substance. Apply this on the front wall (Juraku wall) using the normal wall painting method.
I troweled it over 1m21. After 15 minutes, the surface of the old front wall started to emboss, so I used the back of the trowel to drop the trowel holder on top and peel off L1.

Although the tatami mats were not raised and only newspapers were laid down, no stains were noticed.

Engineering

Claims (1)

[Scope of Claims] (1) A release agent composition containing 10% by weight or more of a water-absorbing resin (2) 80 to 70% by weight of a water-absorbing resin J11i and inorganic powder 7
0 to 80% composition according to claim (1) (8) composition according to claim (1) in which the water-absorbing resin is a crosslinked polyacrylate (4) inorganic Composition (5) according to claim (1), in which the powder is talc: 50 to 800 times more water is added to the release agent composition, and a gel-like material is uniformly mixed and applied to the front wall, and the water permeates. (6) A method for peeling off the front wall, characterized in that the front wall is peeled off along with the front wall (6) A method according to claim (5), in which 100 to 150 times as much water is added to the release agent composition (7) Release agent application Claims that peel off together with the front wall after 10 to 80 minutes (
5) Method of description