Preparation of cationic polyacrylamide reverse microemulsion

A technology of polyacrylamide and inverse microemulsion, which is applied in the field of preparation of cationic polyacrylamide inverse microemulsion, which can solve the problems of easy fluctuation of polymerization temperature and long polymerization reaction time, and achieve easy control of polymerization temperature and particle size The effect of narrow distribution range and moderate molecular weight
CN101298488AInactive Publication Date: 2008-11-05SHANDONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANDONG UNIV
Publication Date
2008-11-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method for cationic-type polyacrylamide reverse micro emulsion. The appearance of the micro emulsion is transparent or translucent low-viscosity micro latex and the mean particle diameter is 50 to 80 nm. The micro emulsion can be placed for a long time without delaminating. After routine extraction with alcohol and acetone, the micro emulsion becomes white powdered solids with the intrinsic viscosity of 200-600 ml / g. The preparation method is to take acrylamide and diallyl dimethyl ammonium chloride as comonomer, apply compounded emulsifying agent and redox initiation system, add sodium formate as reagent and additive in polymerization, and then apply the method of stepwise polymerization to the reverse micro emulsion polymerization. The cationic-type polyacrylamide of the invention has the advantages of moderate molecular weight, stable emulsion, rapid dissolution and narrow particle size distribution, thus being able to be widely applied to fields such as oil exploitation, paper making, textile dying, daily chemical industry and industrial water treatment.
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Description

technical field

[0001] The invention relates to a preparation method of cationic polyacrylamide inverse microemulsion, belonging to the technical field of water-soluble polymer synthesis. Background technique

[0002] At present, acrylamide homopolymers and copolymers have become an important class of chemicals and are widely used in various fields such as textiles, printing and dyeing, coatings, construction, oil exploration and water treatment. The copolymer P(DMDAAC-AM) of acrylamide and dimethyl diallyl has high positive charge density, good water solubility, easy control of molecular weight, low cost, less dosage in water treatment, and good flocculation effect. , less sludge generation and other characteristics, has received widespread attention. Its preparation method has been reported at home and abroad, see Chinese patent CN1051366 (application number 90106284.7), Chinese patent CN101186672 (application number 200610097849), US 2923701, US 3920599, and US 4673511. ...

Claims

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