Hydrogenated castor oil is a waxy solid produced by hydrogenation of castor oil by manufacturers. After treatment, it can be used as a thixotropic agent for coatings, mainly for thickening, anti settling, and anti sagging.
It is a 12 hydroxy stearic acid triglyceride with hydroxyl groups on the fatty acid chain, thus exhibiting a certain degree of polarity.
It can swell gel in non-polar solvent, and weak hydrogen bonding occurs between swollen particles due to polar groups in hydrogenated castor oil molecules, forming a thixotropic network structure, improving pigment suspension, controlling sagging without sacrificing activity and leveling, generally not reacting with other components of coating materials, having no adverse effect on coating durability, not yellowing in the formula, and giving storage stability and reproducibility.
Hydrogenated castor oil also requires activation treatment during use.
In the first stage of activation, the hydrogenated castor oil rheology agent powder is first dispersed using a base solution. In the second stage of activation, the base solution hydrogenated castor oil powder mixture is heated to 43-53 ℃ under mixing conditions, and this process needs to be continued for 20-30 minutes to ensure sufficient swelling of the particles.
Then cool to room temperature while mixing to obtain a rheological structure with stable thixotropic properties.
During the activation process, temperature control is the main factor.
OTHERS
Hydrogenated castor oil RH-40 and PEG-40 differ in their sources, uses, and chemical properties.
Hydrogenated castor oil RH-40 is a waxy solid produced by hydrogenation of castor oil, mainly used as a thixotropic agent in coatings, which can thicken, prevent sedimentation, and prevent sagging. PEG-40 hydrogenated castor oil is a synthetic oil made by hydrogenation treatment and polymerization of castor oil. It can be used as a solubilizer and emulsifier in cosmetics, pharmaceuticals, food processing and other fields.
Hydrogenated castor oil manufacturer introduces to you the application examples of hydrogenated castor oil:
1、 Used as a slow-release material
2、 Used as a lubricant
3、 Used as a base for ointments or suppositories
Therefore, in the types of ointments and suppositories that require vegetable oil or liquid white wax, hydrogenated castor oil can be used because hydrogenated castor oil is a waxy solid with a high viscosity after melting, which can significantly reduce the amount of oil or oil phase used, and the paste is smoother and more delicate.
