Company founder Adolf Wilhelm Keim is seen as the inventor of silicate paints (mineral paints), which revolutionised the builders' and painters' trade at the end of the 19th century.
History
The reign of King Ludwig I of Bavaria was a time of intensive research into water glass (potassium silicate). The king loved the colorful lime frescoes in North Italy and longed to enjoy the typically splendid colors produced by lime paints in his own kingdom. But the harsh German climate was not suitable for the technique used in Italy.
Adolf Wilhelm Keim
Eventually, the skilled craftsman and researcher Adolf Wilhelm Keim succeeded in mixing liquid water glass and mineral color pigments to create a paint that could withstand the climate north of the Alps while at the same time offering brilliant colors. The paint's durability results from the chemical bond formed by the binding agent with the substrate (silification). Keim obtained a patent for his mineral paints in 1878, thus laying the foundation stone for today's company KEIMFARBEN GMBH. The first production site was near to the limestone quarry in Offenstetten (which belongs to Abensberg today) in Lower Bavaria.
Group structure
Headquarters in Diedorf Subsidiary in Alteno
Keimfarben has two German sites in Diedorf (headquarters) and Alteno/Luckau and altogether eleven foreign subsidiaries in Europe (Austria, Switzerland, Italy, France, Spain, the Netherlands, the United Kingdom, Scandinavia, Poland, the Czech Republic) and the United States. Authorised dealers are responsible for sales in countries where Keimfarben does not have its own subsidiary (Australia, Canada, China, Singapore, Malaysia, Indonesia and Russia). On 6 September 2012, KEIMFARBEN GMBH & Co KG changed its legal form and now operates under the name of "KEIMFARBEN GMBH".
Product range
Keim laid the foundation for the success of Keimfarben in 1878 with KEIM Purkristalat, a two-component pure silicate paint. The second generation of Keim paints followed in 1962 with Keim Granital, the first silicate emulsion paint; in contrast to Purkristalat, this is a one-component paint which makes it easier to apply. In 2002, Keimfarben then launched Keim Soldalit, a sol-silicate or colloidal silicate paint (binding agent: colloidal silica and water glass), which makes it much easier to apply silicate paints so that they are suitable for universal use.
Keimfarben produces paint systems for external and internal use, mineral renders and fillers, natural stone repair systems and thermal insulation composite systems, together with concrete repair and surface protection systems. A new item in the product range is silicate paint for wooden substrates.
Acrylic paint is a fast-drying paint made of pigment suspended in acrylic polymer emulsion and plasticizers, silicone oils, defoamers, stabilizers, or metal soaps. Most acrylic paints are water-based, but become water-resistant when dry. Depending on how much the paint is diluted with water, or modified with acrylic gels, mediums, or pastes, the finished acrylic painting can resemble a watercolor, a gouache, or an oil painting, or it may have its own unique characteristics not attainable with other media.
Oil painting is a painting method involving the procedure of painting with pigments with a medium of drying oil as the binder. It has been the most common technique for artistic painting on canvas, wood panel or copper for several centuries, spreading from Europe to the rest of the world. The advantages of oil for painting images include "greater flexibility, richer and denser colour, the use of layers, and a wider range from light to dark". But the process is slower, especially when one layer of paint needs to be allowed to dry before another is applied.
Paint is a material or mixture that, after applied to a solid material and allowed to dry, adds a film-like layer. As art, this is used to create an image, known as a painting. Paint can be made in many colors and types. Most paints are either oil-based or water-based, and each has distinct characteristics.
Sodium silicate is a generic name for chemical compounds with the formula Na 2xSi yO 2y+x or (Na 2O) x·(SiO 2) y, such as sodium metasilicate Na 2SiO 3, sodium orthosilicate Na 4SiO 4, and sodium pyrosilicate Na 6Si 2O 7. The anions are often polymeric. These compounds are generally colorless transparent solids or white powders, and soluble in water in various amounts.
Whitewash, calcimine, kalsomine, calsomine, or lime paint is a type of paint made from slaked lime (calcium hydroxide, Ca(OH)2) or chalk (calcium carbonate, CaCO3), sometimes known as "whiting". Various other additives are sometimes used.
Oil paint is a type of slow-drying paint that consists of particles of pigment suspended in a drying oil, commonly linseed oil. The viscosity of the paint may be modified by the addition of a solvent such as turpentine or white spirit, and varnish may be added to increase the glossiness of the dried oil paint film. The addition of oil or alkyd medium can also be used to modify the viscosity and drying time of oil paint. Oil paints were first used in Asia as early as the 7th century AD and can be seen in examples of Buddhist paintings in Afghanistan. Oil-based paints made their way to Europe by the 12th century and were used for simple decoration, but oil painting did not begin to be adopted as an artistic medium there until the early 15th century. Common modern applications of oil paint are in finishing and protection of wood in buildings and exposed metal structures such as ships and bridges. Its hard-wearing properties and luminous colors make it desirable for both interior and exterior use on wood and metal. Due to its slow-drying properties, it has recently been used in paint-on-glass animation. The thickness of the coat has considerable bearing on the time required for drying: thin coats of oil paint dry relatively quickly.
Paint stripper or paint remover is a chemical product designed to remove paint, finishes, and coatings, while also cleaning the underlying surface.
Pozzolana or pozzuolana, also known as pozzolanic ash, is a natural siliceous or siliceous-aluminous material which reacts with calcium hydroxide in the presence of water at room temperature. In this reaction insoluble calcium silicate hydrate and calcium aluminate hydrate compounds are formed possessing cementitious properties. The designation pozzolana is derived from one of the primary deposits of volcanic ash used by the Romans in Italy, at Pozzuoli. The modern definition of pozzolana encompasses any volcanic material, predominantly composed of fine volcanic glass, that is used as a pozzolan. Note the difference with the term pozzolan, which exerts no bearing on the specific origin of the material, as opposed to pozzolana, which can only be used for pozzolans of volcanic origin, primarily composed of volcanic glass.
A primer or undercoat is a preparatory coating put on materials before painting. Priming ensures better adhesion of paint to the surface, increases paint durability, and provides additional protection for the material being painted.
Fresco-secco is a wall painting technique where pigments mixed with an organic binder and/or lime are applied onto dry plaster. The paints used can e.g. be casein paint, tempera, oil paint, silicate mineral paint. If the pigments are mixed with lime water or lime milk and applied to a dry plaster the technique is called lime secco painting. The secco technique contrasts with the fresco technique, where the painting is executed on a layer of wet plaster.
Silicate mineral paints or mineral colors are paint coats with mineral binding agents. Two relevant mineral binders play a role in the field of colors: Lime and silicate.
Han purple and Han blue are synthetic barium copper silicate pigments developed in China and used in ancient and imperial China from the Western Zhou period until the end of the Han dynasty.
Chester Amphitheatre is a Roman amphitheatre in Chester, Cheshire. The site is managed by English Heritage; it is designated as a Grade I listed building, and a scheduled monument. The ruins currently exposed are those of a large stone amphitheatre, similar to those found in Continental Europe, and although it was long believed that a smaller wooden amphitheatre existed on the site beforehand, excavations since 1999 have shown that the wooden grillage is the base of the seating. Today, only the northern half of the structure is exposed; the southern half is covered by buildings, some of which are themselves listed.
A glaze is a thin transparent or semi-transparent layer on a painting which modifies the appearance of the underlying paint layer. Glazes can change the chroma, value, hue and texture of a surface. Glazes consist of a great amount of binding medium in relation to a very small amount of pigment. Drying time will depend on the amount and type of paint medium used in the glaze. The medium, base, or vehicle is the mixture to which the dry pigment is added. Different media can increase or decrease the rate at which oil paints dry.
Decorative concrete is the use of concrete as not simply a utilitarian medium for construction but as an aesthetic enhancement to a structure, while still serving its function as an integral part of the building itself such as floors, walls, driveways, and patios.
Automotive paint is paint used on automobiles for both protective and decorative purposes. Water-based acrylic polyurethane enamel paint is currently the most widely used paint for reasons including reducing paint's environmental impact.
Organosilicon water repellent:
The conservation and restoration of frescoes is the process of caring for and maintaining frescos, and includes documentation, examination, research, and treatment to insure their long-term viability, when desired.
Watercolor paper is paper or substrate onto which an artist applies watercolor paints, pigments, or dyes. Many types of watercolour papers that are manufactured for the use of watercolors are currently available. Watercolor paper can be made of wood pulp exclusively, or mixed with cotton fibers. Pure cotton watercolor paper is also used by artists, though it typically costs more than pulp-based paper. It is also available as an acid-free medium to help its preservation.
Mineral painting or Keim's process, also known as stereochromy, is a mural or fresco painting technique that uses a water glass-based paint to maximize the lifetime of the finished work.
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