METHOD FOR PRODUCTION OF WATER-SOLUBLE ACETONE-FORMALDEHYDE RESIN
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; an...
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Main Authors | , , , , , , , |
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Format | Patent |
Language | English Russian |
Published |
20.12.2004
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | 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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Bibliography: | Application Number: RU20030108423 |