Products
Tara Powder
Caesalpinea spinoza, commonly known as tara, is a small and thorny tree with red pods that grows in the dry areas of Peru, South America. It belongs to the pyrogallol group.
In its natural state, the concentration of tannins is 35-55%. After the extraction process, the content may increase to 72-75%.
This vegetable tannin is used in the leather industry to obtain very bright and light-colored leathers, as it is difficult to oxidize thanks to its low content of free gallic acid.
Tara powder is also used to make dyes using ferric salts, as mordant of dyeing products, and in the fabric printing process. It is appropriate for vegetable tanned leathers that need to be light-resistant.
Quebracho Extract
Schinopsis balansae, commonly known as quebracho colorado, is a South America native tree. It can be found in the geographical region called Chaco, covering northeastern Argentina and southern Paraguay.
It has a very hard, red-colored, rot-resistant wood, suited for high-quality furniture.
The tanning properties of the quebracho colorado were discovered around 1820. The heartwood contains tannins, water-soluble organic substances of vegetable origin which can transform the raw hide and skin into leather.
The remarkable tanning properties of the quebracho extracts, among other characteristics, make them the most widely used vegetable tanning product.
It has a very rapid penetration, a high tannin content (1200 to 1250 kg/m3 may be extracted, 38% of the total weight) and a relatively low content of non-tannins. The low acid content and medium salt content make the quebracho extract a mild tanning extract (low astringency). The soluble quebracho extracts can be blended in any proportion with any other vegetable extracts, with phenolic synthetic tannins, naphthalene and phenol-naphthalene synthetic tannins, and can be used in any system of vegetable tannage (pit/drum, rapid and semi-rapid), in retannages of chrome tanned leathers where good fullness, roundness and buffability are required.
Valonea
The extract is prepared from the beard and cup of the acorn of Turkish and Greek oak trees. It belongs to the pyrogallol (ellagitannin) group. The properties of the extract are: a low PH value of approximately 3.3-3.7; a high concentration of acids and a fairly high concentration of salts; a slow rate of penetration; relatively good affinity for the fibre; a low stability to enzyme action (i.e. similar to Myrabolams, causing a large amount of sludge - “bloom”, high tannin losses, a high rate of fermentation) ; a dark grayish-brown coloured leather.
Valonea is used in blends with catechols to improve the firmness and weight of heavy leather.
Myrobalan
The extract is prepared from the dried fruit of a tree( Terminalia Chebula) which grows extensively in India and parts of Burma. It belongs to the pyrogallol (ellagitannin) group. The properties of the extract are: a low PH value of approximately 30.-3.3; a very high concentration of acids, and a moderate concentration of salts; a slow rate of penetration; a low affinity for the fibre ( i.e. poor leathering action); a low stability to enzyme action aristing from moulds and yeasts, causing a large amount of sludge – “bloom”(constituents include ellagic acid and chebulinic acid), high tannin losses and a high rate of fermentation; a light yellowish- coloured leather ( better light-fastness than catechols)
Myrabolams extract is blended with catechols, e.g. Mimosa or cold – soluble Quebracho to: increase the level of aciditiy (i.e. lower the PH value), increase the flexibility/ softness of the resultant leather, and brighten the colour of the leather (i.e. reduce the redness)
Industries
Oil drilling
A very efficient method has been developed using vegetable extracts to concentrate minerals and increase the efficiency of flotation of minerals such as nickel, zinc, fluorite, etc.
The products are used mainly as dispersants for fine particles, dispersants for muds, and carbonate depressor in non-metallic minerals.
Cardboard
The line of additives for cardboard offer technological solutions to meet the ever expanding needs of the industry. The products for corrugated cardboard have been developed to improve the final product quality and to increase the productivity, covering a wide range of needs in the industry.
Woodboard
This line of additives has been specially created for the fibre board, plywood and particle board industry.
Sugar
This product significantly reduces the costs of commonly used raw materials, and the costs of cleaning the evaporators’ boxes (time and frequency). It only requires a dosing pump, as it is a liquid product ready to use. No special facilities are needed for its application, and the doses used are low, which makes it ideal for the large volumes of juice processed in this industry.
Mining
A very efficient method has been developed using vegetable extracts to concentrate minerals and increase the efficiency of flotation of minerals such as nickel, zinc, fluorite, etc.
Gallic acid, monohydrate
Chemical name: 3,4,5 - Trihydroxybenzoic acid, monohydratePhysical-chemical properties:
Appearance: White crystalline powder
Contents: Minimum 98% gallic acid (dry base)
Solubility: Very soluble in ethyl alcohol, slightly soluble in water and insoluble in chloroform and benzene.
Ash: Maximum 0.05%
It can be used in:
Pharmaceutical industry as urinary astringent and antihaemorrhagic agent for internal use.
Raw material to make dyes and in the engraving and lithography methods, in addition to the manufacturing of propyl gallate.
As emulsion stabilizer and photographic developer.
As supply for manufacturing hair dyes, suntan lotions, etc.
As clarifying agent for beer.
Raw material for:
Manufacturing trimetroprim (TMP), which offers synergy with sulfamethoxazole (SMX).
Manufacturing dyes with gallocyanine thioflavin and alizarine
Manufacturing of pyrogallol
Preparing gallates, such as bismuth subgallate, used as a cleaning powder in dermatology.
As an adhesive component in the manufacturing of cyanoacrylate adhesives.
As supply for manufacturing hair dyes and suntan lotions, etc.
As binding, thickening and deffloculant agent in the manufacturing of dividing walls.
To increase the strength of plaster-based walls.
Propyl gallate
Propyl gallate is the common name of propyl 3,4,5-trihydroxybenzoate. It is formed by the esterification of gallic acid with propanol.
Physical-chemical properties:
Appearance: White or pale colored powder, hard and rough.
Contents: Minimum 98%
Gallic acid: Less than 0.5%
Color of 20% solution in propylene glycol Colorless or slightly yellow.
Uses:
Natural product used as food-grade antioxidant for fats and oils in general, and food and cosmetics containing them; in emulsions, waxes, transformation products, fish meal for pets, potato chips, chewing gums, toothpaste, packing materials and others. It also inhibits the auto-oxidation of paraldehyde and similar substances exposed to peroxides in the presence of oxygen. Propyl gallate may be combined with other anti-oxidant products such as BHT, BHA and ascorbyl palmitate. It may be used to deactivate the presence of metallic traces (iron and copper) when combined with citric acid, which acts as a quelant to avoid unwanted colors.
Limit or tolerance: 0.02% (200 ppm) alone or combined, based on total content of fats or oil in the product.
The use of propyl gallate as anti-oxidant in human and pet food is subject to specific rules in each country.
