发明名称 |
METHOD OF PRODUCING SODIUM ALLYL SULPHONATE FOR SYNTHESIS OF SULPHO-CONTAINING CARBOXYLATE SUPER-PLASTICISERS FOR CEMENT MIXTURES |
摘要 |
FIELD: chemistry.SUBSTANCE: method of producing sodium allyl suphonate involves reacting sodium sulphite and allyl chloride in a heterogeneous aqueous-organic medium in the presence of methoxy polyethylene glycol methacrylates (with 23-45 ethoxyl links) as phase-transfer catalysts. Synthesis is carried out at temperature of 30-40°C, synthesis time of 2-4 hours and molar ratio of sodium sulphite to allyl chloride of (1.0-1.1):1.0, concentration of methoxy polyethylene glycol methacrylate of 0.05-0.1% with respect to the mass of the aqueous phase. The obtained homogeneous aqueous sodium allyl sulphonate solution can be used without further purification for synthesis of super-plasticisers by radical terpolymerisation with methoxy polyethylene glycol methacrylates and (meth)acrylic acid.EFFECT: simple technology of producing sodium allyl sulphonate when producing super-plasticisers for cement mixtures, low power consumption, preventing formation of waste water and high output of the end product.1 tbl, 10 ex |
申请公布号 |
RU2522452(C1) |
申请公布日期 |
2014.07.10 |
申请号 |
RU20130111009 |
申请日期 |
2013.03.12 |
申请人 |
FEDERAL'NOE GOSUDARSTVENNOE BJUDZHETNOE OBRAZOVATEL'NOE UCHREZHDENIE VYSSHEGO PROFESSIONAL'NOGO OBRAZOVANIJA "NIZHEGORODSKIJ GOSUDARSTVENNYJ TEKHNICHESKIJ UNIVERSITET IM. R.E. ALEKSEEVA" (NGTU) |
发明人 |
KAZANTSEV OLEG ANATOL'EVICH;OREKHOV DMITRIJ VALER'EVICH;SIVOKHIN ALEKSEJ PAVLOVICH;SAMODUROVA SOF'JA IGOREVNA;KAMORIN DENIS MIKHAJLOVICH |
分类号 |
C07C303/32;C07C309/20 |
主分类号 |
C07C303/32 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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