Improvements in the process of obtaining polyol of long molecular chains, making pieces ru00ecgidas and flexu00ecveis in polyurethane.Using castor oil (Ricinus communis) as the main raw material

摘要

"Improvements in the process of obtaining polyol of long molecular chains, making pieces ru00ecgidas and flexu00ecveis in polyurethane.Using castor oil (Ricinus communis) as main raw material.This patent for improvements in the process of obtaining polyol with long molecular chains by using as the main raw material oil from castor bean (Ricinus communis) s.Ubmetido a production cycle that demand less time under higher temperatures, owing to the injection of inert gas and hydrogen in cyclical periods of short duration.The word refers to a new process using vegetable oils to produce polyols with long molecular chains.Suitable for the manufacture of rigid parts as flexible polyurethane.With a production cycle significantly shorter - of the order of 2 hours to two and a half hours and resulting in a polyol free of moisture.That allows making pieces of polyurethane with densities of the order of 1200 to 1300 kg / m ^ 2 ^.This new process provides for mixture of the following components by weight: sym castor oil: 70% to 82% sym soya oil: 10% to 25% sym primary amines and secondary: 0.5% to 1% sym surfactants siloxanes: 0.2% to 1% sym polyglycols: 0,1% sym sucrose: 3% to 10%.This mixture is subjected to a heating of the order of 130 to 150 198 C, and during this preparation is injected into the mixture of an inert gas, short intervals, you can also inject hydrogen.In order to obtain a molecule more long.