FIELD: production of water-soluble acetone-formaldehyde resin.
SUBSTANCE: claimed resin is obtained by condensation of acetone with formaldehyde at molar ratio of 1-2 at 40-450C and pH of 11.0-11.5 to 7.0-7.5 in presence of 5 % aqua sodium hydroxide as a catalyst; evacuation; drying at 55-600C; and cooling of resin. Alkali catalyst is beforehand dissolved in solvent.
EFFECT: product with increased yield and improved quality.
5 ex, 1 tbl
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|---|---|---|---|
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RU2074203C1 |
| 0 |
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SU366208A1 | |
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