CZ7466U1 - Coating composition containing wooden particles for coatings having plastic surface - Google Patents

Description

Technical field

The present invention relates to a coating composition comprising wood particles such as sawdust and / or shavings which are suitable for forming decorative coatings of plastic surface and natural design.

Background Art

At present, surfaces of attractive natural wood design are often created by applying a layer of the appropriate natural material to the selected substrate, and optionally applying a colorless varnish. The layer usually consists of cut cork, veneer, compact wood, etc. The disadvantage is the need for specially treated, generally high quality natural material and its considerable consumption. Another disadvantage is the handling demands.

Natural wood-like design is also created by so-called glazing, where two layers of differently colored varnishes are applied to each other, and then, with the help of scraps or special tools, partially mixed so that the result mimics the natural drawing of the chosen material, for example beech, birch or larch wood . The disadvantage of this solution is that, as a rule, the result, even with a good quality design, does not appear to be entirely natural.

Another imitation of natural materials is blended two-color or multi-color spray varnishes, creating mottled coatings which, with a suitable color combination, can give a natural impression. However, a design that has a truly pleasant natural impression is not created through it.

For example, the above options are described in Chemistry for Everyone (SNTL 1972, pp. 120-142).

The essence of the technical solution

The essence of the technical solution lies in the fact that a coating for paints with a plastic surface and a natural design is proposed, which blends 60 to 80 wt. % water, 2 to 10 wt. % water-soluble binder, 5 to 10 wt. % of wood particles and 8 to 30 wt. curing agents based on polymerized substances. The weight of the wood particles is given for dry particles, meaning particles of moisture of dry or fresh wood. Some of the known water-soluble binders, such as glue, wallpaper paste, white adhesive paste, acacia, etc., can be used as binder. The proposed coating composition is a consistency that allows the coating to be applied to surfaces of any shape. After drying, it creates a layer of paint, to which the wooden particles give an impressive natural structure design and which is relatively strong and mechanically resistant. The coating composition is suitable for both interiors and exteriors, but depending on the intended use and the required mechanical resistance, strength and resistance to moisture and humidity, a suitable hardener and particular fabric composition should be selected within the above ranges.

A suitable curing agent based on polymerized substances is acrylate, i.e. acrylic lacquer or acrylate dispersion, which gives optimum results especially for interior coatings.

Another suitable polymeric curing agent is a synthetic lacquer, preferably colorless, glossy or matt, depending on the desired effect. However, for example, epoxy or nitrocellulose lacquer may be used.

The size of the wood particles is such as to allow this natural ingredient to stand out and to produce a plastic coating structure that will be most effective under given conditions. I.e. the wood particles are from dust particles to shavings, ie up to about 5 cm in size. However, the coating works best if the size of the wood particles is relatively uniform, optimally

- 1 CZ 7466 Ul is also the easiest to operate if the wood particles are either sawdust or shavings. Sawdust creates a finer structure while coarser shavings.

Designed paint with wood particles for coating with plastic surface is suitable as decorative finish of surfaces in interiors and exteriors, like walls, ceilings, plasters etc., and objects. It is impressive, relatively inexpensive, makes it easy to handle and apply with a roller, or a trowel.

Examples of technical solutions

Example 1

An example of a technical solution is a coating for interior use, which is a mixture of these substances:

substance content% wt.

mixture of wood shavings and sawdust up to 2 cm ........................................ ..... 5,0% wallpaper adhesive DEKORA .................................... ........................................ 2.0% acrylate dispersion. .................................................. ...................................... 30.0% water ....... .................................................. .................................................. ........ 62,95% preservative .................................... .................................................. ... 0.05%

Total ................................................. .................................................. ........ 100%

Example 2

Another example of a technical solution is a coarse design interior coating composition which is a mixture of the following:

substance content% wt.

mixture of wood shavings and sawdust up to 5 cm .10,0% Paint Glue ........................................... .................................................. ......... 10,0% acrylic varnish ................................... .................................................. ................. 8,0% water ............................ .................................................. .................................... 72%

Total ................................................. .................................................. .......... 100%

Example 3

Another example of a technical solution is a coating for interior use of fine design, which is a mixture of these substances:

substance content% wt.

wood sawdust up to 1 cm ........................................... ....................... 10.0% liquid wallpaper adhesive KORAMEX ............... ............................................ 10.0% acrylic lacquer .................................................. .................................................. 20.0% water ............................................. .................................................. .................... 60,0%

Total ................................................. .................................................. .......... 100%

-2CZ 7466 Ul

Example 4

Another example of a technical solution is an exterior coating composition of fine design, which is a blend of the following:

substance content% wt.

wood sawdust and shavings up to 2 cm in size ....................................... ............. 6.0% liquid wallpaper adhesive .............................. ............................................. 7.0% synthetic pickle................................................. .................................................. .15,0% water ............................................ .................................................. ..................... 72.0%

Total ................................................. .................................................. ......... 100%

Claims (5)

PROTECTION REQUIREMENTS Coating composition with wood particles for coatings having a plastic surface, which is a water dispersion having a content of 60 to 80% by weight. water and 2 to 10 wt. % water-dilutable binder, characterized in that it contains 5 to 10 wt. % wood particles and 8 to 30 wt. hardeners based on polymerised substances. Wood-based paint for plastic coating according to claim 1, characterized in that the polymer-based hardener is acrylate. Wood-based paint for plastic coating according to claim 1, characterized in that the polymer-based hardener is a synthetic lacquer. Wooden particle coating composition for plastics surface coatings according to claims 1 and 2 20 or 3, characterized in that the wooden particles are in the form of sawdust. Wooden particle coating material for plastics surface coatings according to claims 1 and 2 'or 3, characterized in that the wooden particles are in the form of shavings.