| PATENT ASSIGNEE'S COUNTRY | Korea |
| UPDATE | 06.99 |
| PATENT ASSIGNEE | This data is not available for free |
| PATENT CLAIMS |
Process for prepg a build-up suppressant characterized in that - Phenol is subjected with formol to polycondensation reac tion in presence of acid or base catalyst to obtain precursor - Continuously adjusting pH of precursor to 9 - 13 with acidic or alkaline soln |
| PATENT PHOTOCOPY | Available on request |
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