FIELD: chemistry of high-molecular compounds, chemical technology.
SUBSTANCE: invention relates to a method for synthesis of polytriesters of boric acid and phenol. Proposed polytriesters of boric acid and phenol are synthesized by the complete esterification reaction of boric acid with phenol resulting to formation of a mixture containing triphenylborate followed by distillation of mixture under vacuum. Hydrocarbon forming azeotropic mixtures with water - benzene, toluene and xylene are used as solvents. Then isolated triphenylborate is polymerized with trioxymethylene or paraformaldehyde using boron trifluoride etherate as a catalyst. Also, invention claims polytriester of phenol and boric acid synthesized by a method above said. Synthesized polymers represent thermostable boron-containing phenolformaldehyde resins that are easily soluble in polar solvents. Synthesized compounds can be used in industry instead phenolic resins for conferring thermostable properties for articles.
EFFECT: improved method of synthesis, valuable properties of ester.
2 cl, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PREPARING POLYOXYMETHYLENES | 0 |
|
SU715586A1 |
| 0 |
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| 0 |
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| METHOD OF OBTAINING HIGHLY DISPERSIVE DIMETHYL ETHERS OF POLYOXYMETHYLENEGLYCOLS | 2014 |
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| METHOD OF OBTAINING TRIOXANE TERPOLYMERS | 0 |
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| 0 |
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| METHOD OF BINDER PRODUCTION | 0 |
|
SU823389A1 |
