What Are Phenol Resins? | Products | ASAHI YUKIZAI CORPORATION

How Are Phenol Resins Generated?

Phenol resins are made from phenols and aldehydes. Addition of catalyst induces the addition-condensation reaction to generate phenol resins.
Depending on the method of heating and the mixing ratio, different phenol resins called resol and novolac are created.
The resole is basically liquid at ambient temperature. After it is heated, it turns into solid and will never retransform into liquid.
The novolac is normally solid. After it is heated, it melts. After it is cooled to the ambient temperature, it returns to solid.
We take advantage of their respective characteristics. The resole is used for insulation material. The novolac is used in casting and electric material production.

Depending on the method of heating and the mixing ratio, different phenol resins called resol and novolac are created.

How to Produce Phenol Resins

The method of producing phenol resins is similar to the way cakes or desserts are made.
First, mix phenols with hardening materials and additives.
The final product varies depending on the percentage of additives.
It is as though, at the time of making cakes and puddings, the final product varies depending on the percentages and combination of flour, milk, eggs and other ingredients.
Byproducts generated from the manufacturing process are not discarded as they are. They are transformed into substances helpful to nature before they are returned to the earth.
Used insulation materials are also reused as sources of energy. We are actively working on environmental conservation.