Leather softener enters the skin through the pores of the animal’s dermis and spreads evenly Oil distributed on the surface of intradermal fibers and capable of moderately combining with intradermal fibers. When the thickness of this layer of grease reaches a suitable thickness, the friction between the sliding surfaces of the fibers in the leather is equivalent to the friction between oil molecules, so the leather will be very soft. Therefore, it can soften the leather that has hardened due to loss of oil, such as leather clothing, leather bags, leather shoes, leather sofas, etc. that have hardened when exposed to water, or leather that has hardened after being left for a long time. You can use a leather softener with a leather-simulating oil formula to soften it. However, it is not suitable to apply a layer of leather and other leather that has a hardened outer membrane, because this membrane has closed the pores and it is difficult for the leather softener to enter. If you take off this film, it will be effective.
Softeners can be added in multiple processes of tanning. The main function is to improve the feel and softness and help absorb other tanning auxiliaries. It is the preparation Important additives for soft leather, high-grade surface leather and cowhide two-layer transfer film leather. Among them, high-grade leather softeners should have excellent emulsification, dispersion, penetration and bonding capabilities, play a role in dispersion and isolation between leather fibers and fiber bundles, and have no or little migration, so that the softening effect can be retained for a long time.
Domestic representative products include VS, IS, ES, MS-20, PEN, etc. The auxiliary component is wax (such as polyethylene wax, stearyl alcohol, oxidized polyethylene wax, etc.). Nonionic surfactants are rarely used alone as softeners. Other active ingredients in leather softeners are various waxes, mineral oils, silicone polymers, cationic surfactants, amphoteric surfactants and nonionic surfactants.
Let’s take a brief look at the stearyl alcohol:
White flakes or particles. Soluble in alcohol, benzene and chloroform, insoluble in water.
Uses:
1. Stearyl alcohol can be used instead of cetyl alcohol, such as as a dispersant in pharmaceuticals.
2. Used as the base material (emulsifier) of creams and lotions in cosmetics.
3. Used as raw materials for rice field insulation agents, water surface covering agents, defoaming agents, polishing agents, lubricants, flotation agents, softeners (pharmaceutical ointments) and color formers and antioxidants for color films. Agent, stearyl tertiary amine, stearyl ester.
4. Can be used to produce surfactants (Pingpingjia) (can be replaced by octadecanol), synthetic resins and synthetic rubber, Color film Couplers, etc.
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