Hydr-Oil

Characteristics:

– water soluble

– consistency and typical properties of oil paints

– compatibility with other auxiliary  additives.

Water solubility.

A characteristic feature is that these paints are water-soluble, which helps to avoid the need to dilute with solvents traditionally used in oil painting (turpentine, turpentine oil, etc.) and which may often cause allergies or skin irritation. When using these paints, it is enough to wash the working tools with soapy water. The use of water as a solvent also eliminates the problem of unpleasant odors, which is very significant when working in closed and poorly ventilated rooms. Another undeniable advantage is the low cost and the availability of “solvent” – just open the tap.

Consistency and typical properties of oil paints.

Although these colors are water-soluble, they are genuine “oil paints”, that is, they consist mainly of vegetable oils which determine their physical and chromatic properties:

– thick and sticky texture that shows the brush strokes or spatula perfectly

– intense colors, almost all opaque, lightfast

– excellent adhesion on all surfaces, even on he  “greasy” ones

– the flexibility and irreversibility of the color coating after complete drying

– no volumetric shrinkage even  if thick layers applied.

The drying process of these paints, as in the case of traditional oil paints, occurs through the oxidation of certain bonds in molecular chains. These linear chains slowly bind together through the absorbed oxygen to form a three-dimensional, and therefore solid, structure with high light reflection power, thus giving the bright and intense color appearance typical for oil paints. It is important that even if the colors seem “dry” to the touch after some time, which may vary from 1 to 6 days depending on the paint thickness and surface, you should wait one or two months before any final varnishing.

Compatibility with other additives.

The paints and  additives for artistic painting available on the market can be divided into two categories: oil (lipophilic) and water (hydrophilic), both incompatible. An innovative feature of the new paints is their compatibility with both categories: oil and water, and with related additives. This property gives artists huge opportunities of artistic expression, the possibility of obtaining previously unattainable effects and the use of art materials of a different nature. The examples shown here represent only some of the possible uses for the new paints, and there are many more that artists can discover and experiment with.

 

 

Compatibility with oil paints and additives for oil paints.

Hydro-oil paints can be perfectly mixed with all oil paints and additives dedicated  to them (linseed oil, turpentine, etc.) in any proportions, remembering that if the  ratio exceeds 30% the water solubility will be lost.

Compatibility with acrylic paints and dedicated additives.

Unlike traditional oil paints, these paints can be mixed with acrylic paints in any proportions giving some application advantages:

–  they slow down the drying time of acrylic paints, thus improving adhesion, thanks to which the colors are more “greasy”

– their better consistency and viscosity make the paint processing more effective

– the final layer is more flexible and “full”. However, it is advisable to dilute the colors with some water before mixing them with acrylics to avoid excessive build-up of viscosity.

Compatibility with tempera.

Both today and in the past, some artists have tried to obtain paints with tempera opacity and dullness combined with other typical features of oil paints. The so-called “fat temperas” have been tested by many artists, more or less successfully. Mixing hydro-oil paints in any proportions with tempera gives the possibility of obtaining good results. In fact, when using the most popular “lean” temperas , the flexibility and adhesion to the demanding surfaces is significantly improved while leaving the opacity and “flatness” features  of the paint coating almost unchanged.

ADDITIVES.

As mentioned HYDR-OIL can be mixed with all conventional oil-based media, which, however, when added in large amounts, will reduce or eliminate the property of water solubility. For this reason, special additives, also including water-soluble ones, have been developed to eliminate such effect

Water-soluble linseed oil.

This is modified vegetable oil obtained from the cold pressed flax seeds. When added to paints, it makes them more fluid without making them “thinner” and giving them a shine.

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