Zinc stearate
Zinc stearate is another specialty that Mateos, S.L. obtains from the stearic acid and that we produce at our plant.
2 C18H35COOH + ZnO → (C18H35O2)2Zn + H2O
It is a fine powder, white and silky to the touch with the following properties:
- It is very stable under high temperature conditions
- It is Insoluble in water, alcohol and ethers
- It is extremely resistant to water and provides water-repellent properties
- It is a very effective separating agent
- It serves as a supply of zinc, which is a benefit in some processes
DUST-FREE STEARATE
Supply formats for zinc stearate
- Big-bags – 400Kg – 1000Kg
- 20 Kg sacks
- 20′ o 40′ containers for export
We also provide customized supply: by granulometry, colour, iodine index, etc.
Format:
- Zinc stearate powder
- Zinc stearate for varnishes / paint
- Dust-free zinc stearate
Do you need zinc stearate?
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Some applications of zinc stearate
VULCANIZING / RUBBER
Zinc stearate is an “activator” for vulcanization because zinc has a beneficial effect on the reaction of sulphur with polyolefin.
Zinc stearate facilitates dispersion by being very soluble in the apolar region of polyolefins.
It works as an antacid with polyolefins, contributing to colour stability and preventing corrosion.
COSMETICS
Zinc stearate is used as a lubricant, thickener, and to hold together the liquid and oily elements in cosmetics. It also improves the final appearance of the product.
It usually appears in make-up formulations such as eyeliner, eye shadows, facemasks, lipsticks, face powders and foundation creams. Zinc stearate does not cake; it flows very well and adds a silky touch to the mix.
COSMETICS
Zinc stearate is used as a lubricant, thickener, and to hold together the liquid and oily elements in cosmetics. It also improves the final appearance of the product.
It usually appears in make-up formulations such as eyeliner, eye shadows, facemasks, lipsticks, face powders and foundation creams. Zinc stearate does not cake; it flows very well and adds a silky touch to the mix.
POWDER FOR PLAYING CARDS
It is widely used in the world of playing cards for the following purposes:
· Fans: If the card deck is impregnated with a thin layer of zinc stearate, the cards will slide more easily. The stearate remains transparent. It is used by magicians and casinos.
· Card deck cleaning: Zinc stearate is impregnated in cotton to restore playing cards that may have been dirtied or marked by oil on the hands or through use.
Zinc stearate, due to its degree of fineness, is inserted into the scratches that the cards may have. It fills them and makes handling easier, as well as increasing speed when using the card decks.
SEPARATING AGENT FOR METALURGY
It is an ideal separating agent for difficult machine parts, whether metal or plastic. It prevents the parts from adhering to the mould, leaving a better finish.
SEPARATING AGENT FOR METALURGY
It is an ideal separating agent for difficult machine parts, whether metal or plastic. It prevents the parts from adhering to the mould, leaving a better finish.
VARNISHES AND PAINTS
In its finest form, zinc stearate has transparent properties and is used in the manufacture of varnishes and paints.
It provides great dispersal ability and acts as a sealer for imperfections on the surface and as a thickener. In addition, it protects the paint from moisture due to its water-repelling properties.
PLASTICS AND COLOUR ADDITIVES
Like other stearates, it has a wide number of applications in the plastics industry::
· It is used as a lubricant and stabilizer in the production of PVC.
· As a pigment dispersant in Masterbatch.
· Due to its properties of transparency it is used in impact glass applications, such as polystyrene for glass and other clear polymers.
· As a metal releasing agent in polyurethane.
PLASTICS AND COLOUR ADDITIVES
Like other stearates, it has a wide number of applications in the plastics industry::
· It is used as a lubricant and stabilizer in the production of PVC.
· As a pigment dispersant in Masterbatch.
· Due to its properties of transparency it is used in impact glass applications, such as polystyrene for glass and other clear polymers.
· As a metal releasing agent in polyurethane.
SINTERIZING – POWDER METALURGY
Zinc stearate is mixed as a lubricant additive together with the metal powder. The proportion of the lubricants varies from 0.5% to 5.0% by weight.
n the compacting phase in the press, the lubricants improve flow and compressibility characteristics; the binders have the opposite effect. The different amount of the two additives influences the porosity and final properties of the material. Zinc stearate has an advantage over other lubricants as it provides zinc for the alloy which is beneficial in certain processes.
Finally, the additives are volatilized from the part “in green” in the sintering oven after compacting in the press.
SINTERIZING – POWDER METALURGY
Zinc stearate is mixed as a lubricant additive together with the metal powder. The proportion of the lubricants varies from 0.5% to 5.0% by weight.
n the compacting phase in the press, the lubricants improve flow and compressibility characteristics; the binders have the opposite effect. The different amount of the two additives influences the porosity and final properties of the material. Zinc stearate has an advantage over other lubricants as it provides zinc for the alloy which is beneficial in certain processes.
Finally, the additives are volatilized from the part “in green” in the sintering oven after compacting in the press.
LUBRICANT IN EXTRUDERS
To improve productivity in production using extrusion and lamination of plastics and metals, calcium stearate is added. It acts as an additive and solid lubricant adding between 0.3 -1.0% of calcium stearate to the mixture in the feed hopper. This remains stable at high temperatures and improves the following points in manufacturing:
· Product homogeneity
· Hot spots
· Energy consumption
· Saving of raw materials