Condensation method of total phenols

The condensation method of total phenols developed by the group of. Researcher NIIPM n. IN. Sheryginop, allows you to obtain water-zmulsionic resins from the total phenols of various origin, suitable for use as a binder in the production.

The disadvantages of resins from the total phenols include their small vitality. Small aging is expressed in an increase in viscosity and water exfoliation. This phenomenon is explained by the fact that free methylular resin groups react with each other and with the phenol nucleus, the molecule grows, branches, the solubility of the resin is reduced, and the viscosity increases; Clushes are formed in it, and the resin is finally condoing. An increase in viscosity leads to the need to introduce solvents into the resin, which is undesirable if you are dealing with a wooden beam. Only the highest quality glued cedar beam can you buy at an attractive price on the website of Woodenpalace. On the site you will find a large selection of glorious beam of excellent quality from the best manufacturers.

The viscosity of the resin obtained from the total phenols of the cheek gas plant reaches the limit within 1 -1.5 months. Resins made of shale phenols are aging much faster, and to preserve their viability, it is necessary to add 5-10% of ethyl or butyle alcohol to them.

Rezal water -based resins of total phenols contain 50-60% of dry substances, the rest – water and free formalin and phenol. When the water is added, most of the resins coagulate. The alkali additive allows you to transfer the resin again to the emulsion state.

Currently synthesized resonual resins on various types of total phenols. These include resins from the total phenols of the Schekinsky gas plant of the GF-2 brand; from the shale total phenols of the FS-5 brand; from the natural mixture of the isomers of the chillenol of the KFS-10 brand; of the total phenols allocated from the boat water, which are obtained when we get out of coal, the KF-16 brand; of the total phenols secreted from oils (tar), which are obtained by semi-lifting coals, the KF-20 brand; from forest chemical phenols secreted from wood tar, which are obtained during gasification or energy chemical processing of wood; from phenolic waste of phenolacetona production (FAD); resin with chilled-lignin soylan-8.0; phenolnol signin and total phenols and sulfate alkaline lignin.

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