IMPROVED PROCESS FOR THE PRODUCTION OF SODIUM CALCIUM OR LITHIUM METAL SALTS OF PHENOL-SULPHONIC ACID FORMALDEHYDE POLYMER FOR USE AS AN OIL-WELL CEMENT ADDITIVE,申请号IN1978DE53019-传众专利搜索

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发明名称	IMPROVED PROCESS FOR THE PRODUCTION OF SODIUM CALCIUM OR LITHIUM METAL SALTS OF PHENOL-SULPHONIC ACID FORMALDEHYDE POLYMER FOR USE AS AN OIL-WELL CEMENT ADDITIVE
摘要
申请公布号	IN148567(B)	申请公布日期	1981.04.04
申请号	IN1978DE53019	申请日期	1978.07.19
申请人	COUNCIL SCIENT IND RES	发明人	SAIKIA TORUN CHANDRA;DUTTA SAMAPANDRA NATH
分类号	(IPC1-7):C08G5/00	主分类号	(IPC1-7):C08G5/00
代理机构		代理人
主权项
地址

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