Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Reexamination Certificate
2002-05-30
2004-01-13
Green, Anthony J. (Department: 1755)
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
C106S018320, C106S018330, C106S018340, C106S018350, C106S164500, C106S164510, C106S204010, C106S204010, C106S287100, C106S287170, C106S400000, C106S461000, C106S465000, C106S801000, C106S803000, C106S805000, C106S811000, C106S812000, C106S814000, C106S817000
Reexamination Certificate
active
06676742
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates in general to mural decorations.
More in particular, the present invention regards a physical and chemical mixture of aggregative material, chemical products, mineral fillers and/or special pigments in dispersion, with metallic effect, which, once mixed together, either totally or in part, in well-defined proportions, can be added in certain percentages to already existing water-based decorative paint products with monochromatic or multichromatic flocculate components (for instance, those going by the trade name of water-based Multicolor, Antiche Terre Fiorentine and/or the like), or aqueous-phase paint products without flocculate components, such as the so-called semi-coverings or glazings (for instance, those going by the trade name of Arteacqua and/or the like), transforming their use, decorative appearance, and/or mode of application on the wall.
SUMMARY OF THE INVENTION
The innovative idea is that of achieving a new decorative appearance, so enabling the creation of a mural coating that has not hitherto appeared on the national or international markets, aimed both at the private user and at the professional decorator.
Another important and innovative aspect is the application of the aforesaid final product, which can be applied in a single coat on a wall surface appropriately treated with a white or coloured primer or undercoat to obtain a monochromatic, two-colour, or multicolour final decorative product also having metallic effects (the term “metallic” meaning, in the present context, a metallized effect and/or an iridescent effect and/or a pearly effect). It is likewise possible, again in a single coat, to obtain the preponderance of one colour over another colour or the preponderance of the metallic effect over the colour or vice versa, this being made possible, with extreme ease and flexibility, by the purpose of the present patent, i.e., the mixture of aggregative material, chemical products and mineral fillers, this mixture being referred to hereinafter, for reasons of simplicity, as mixture “A”, simply added by mechanical mixing to the paint products already described previously.
If it is desired to obtain the metallic effect, it is advisable to prepare a predispersion of the particular metallic pigment (referred to hereinafter as predispersion In what follows, the aforesaid predispersion “B” will possibly be added, by mechanical mixing, to the paint products previously referred to.
The decorative painting effects, which are truly innovative, obtained with the invention of the mixture “A” in association with the already commercially available products, has enabled an advance in the current state of the art, moreover simplifying considerably the work of application of the products. It is sufficient to consider that certain decorative painting effects, in the current state of the art, are obtained on walls only by means of multiple coats of paint, with an expenditure in terms of time and materials, and, hence, with enormous costs and with the possibility, in view of the complexity of application, of mistakes and final poor appearance.
DETAILED DESCRIPTION OF THE INVENTION
In what follows, there is the formulation of ingredients making up the mixture “A”.
The aforesaid ingredients are to be understood as expressed in weight percentages (wt %), as also in the case of other formulations appearing herein, in the absence of other indications.
As has already been explained, the purpose of the invention, i.e., of mixture “A”, is that of enabling application in a single coat of a new decorative painting effect, by combining mixture “A” with painting products already available on the market. For this purpose, it is necessary, for the ingredients that will be described in what follows to be present in the mixture “A”.
An Anchoring Agent
The said anchoring agent acts as a bridge or interface between the final decorative coating and the wall, thus guaranteeing a firm and permanent adhesion to the substrate.
As anchoring agent, it is possible to use, for instance, one comprised in the following group, or mixtures thereof:
A) calcium silicate or metasilicate;
B) aluminium silicate (kaolin);
C) magnesium silicate (talc);
D) diatomaceous earth;
E) aluminium silicate calcinated at approx. 1000° C. (calcinated kaolin).
The amount of anchoring agent forming part of mixture “A” may range between 5 wt % and 30 wt %.
A Structuring Agent
This enables a perfect applicability of the final decorative coating, in so far as it guarantees adequate slip and spreadability during application, at the same time increasing, once the coating has been applied on the wall. resistance to abrasion and to the formation of cracks.
As structuring agent, it is possible to use, for instance, one comprised in the following group, or mixtures thereof:
A) polyethylene/cellulose-based fibres;
B) water-insoluble cellulose fibres;
C) wood fibres;
D) water-insoluble fine cellulose powder.
The amount of structuring agent forming part of mixture “A” may range between 3 wt % and 21 wt %.
A Filling Agent
This enables the final decorative coating to assume body and thickness, facilitating its application and creating, together with the anchoring agent, the right degree, once drying is complete, of opacity and cover.
As filling agent, it is possible to use, for instance, one comprised in the following group, or mixtures thereof:
A) semi-amorphous calcium carbonate;
B) rhombohedral, crystalline calcium carbonate (calcite);
C) precipitated calcium carbonate with an acicular or rhombohedral structure;
D) amorphous calcium carbonate;
E) magnesium hydrosilicate with laminar structure in natural combination with calcium-magnesium carbonate;
F) crystalline calcium carbonate precipitated with spheroidal particles;
G) coated calcium carbonate.
The amount of filling agent forming part of mixture “A” may range between 5 wt % and 25 wt %.
A Reinforcing Agent
This enables the final decorative coating to assume greater structural hardness, bestowing on the applied film consistency and greater resistance to possible impact, together with, at the same time, a good transpirability.
As reinforcing agent, it is possible to use, for instance, one comprised in the following group, or mixtures thereof:
A) hydrated magnesium and aluminium silicate (mica);
B) siliceous sand;
C) coalescence of mica, quartz and chlorite (hydrated magnesium-aluminium silicate).
The amount of reinforcing agent forming part of mixture “A” may range between 8 wt % and 50 wt %.
The aforementioned products within the various categories can be used either individually or mixed together in order to optimize the desired characteristics of the finished product. For instance, it is possible to adjust the product's viscosity, opacity, thixotropic features, applicability, etc. Mixing of the various components in the appropriate weight percentages is carried out in special mixers for dry powders.
The various ingredients are thus put in the mixer and are then mechanically mixed until a homogeneous mixture is obtained, which is ready for the subsequent working steps.
Once it has been prepared, the mixture “A” will be added to the products already mentioned, in order to obtain the final decorative product. This addition will be carried out under slow mechanical mixing.
The established amount of aqueous-phase paint product is then put into a special container. The container is then positioned under a disperser which has a butterfly impeller driven by a motor with speed variator, and the previously prepared mixture “A” is added under slow and continuous stirring.
The proportions of addition between the aqueous-phase paint products and the mixture “A” may vary as follows:
aqueous-phase paint products: from 25 wt % to 85 wt %;
mixture “A”: from 75 wt % to 15 wt %;
to obtain the final product, which can be applied with a spatula, glove, or the like.
In order to obtain the final product, which can be applied with a roller, paintbrush, or the like, the proportions between the aqueous-phase paint product and the mixture “A” could v
Candis S.r.l.
Green Anthony J.
Sughrue & Mion, PLLC
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