Cationic polyacrylamide manufacturing process

PAM for brief, the architectural formula is [- CH2-CH( CONH2)] N -, the molecular weight between 4-20 million. Polyacrylamide mainly has 2 sort of commodity forms, one is the look of white or slightly yellow powder, soluble in water, the speed is extremely slow-moving, raise the temperature level can a little advertise dissolution, but the temperature will not surpass 50 ℃, in order to prevent molecular deterioration, challenging to liquify in natural solvents. Another is colorless viscous colloid, in addition to polyacrylamide emulsion (Shanghai synthetic resin Research study Institute). Neutral, non-toxic. Polyacrylamide saved in an awesome, ventilated, dry stockroom, dampness, light, warm. The storage space time should not be as well long. Polyacrylamide is split into cationic type, anionic type, amphoteric ion as well as non-ionic type according to framework.

Cationic polyamide (CPAM).
Cationic polyacrylamide (CPAM) is a type of cationic systems as well as acrylamide copolymer of non ionic systems, with its molecular chain can ionization of favorable team (CONH2), in the water can be ionized into polycation and little anion, as well as spread in the service of suspended particle adsorption and also linking, has solid flocculation. Cationic polyacrylamide is extensively utilized in water therapy and metallurgy, paper production, petroleum, chemical industry, fabric, mineral processing and other areas, as a thickener, flocculant, drag reducer, with gel, sedimentation, support as well as other functions. The molecular weight of CPAM is normally lower than NPAM and APAM, especially suitable for the dewatering treatment of local sewage, municipal sludge, papermaking sludge as well as various other commercial sludge.

In the synthesis of cationic polyacrylamide extra typically utilized cationic monomers are methyl acryloxyethyl trimethylammonium chloride (DMC), acryloxyethyl trimethylammonium chloride (DAC), dimethyl diallyl ammonium chloride (DMDAAC), acryloyl aminopropyl trimethylammonium chloride (AMPTAC), methacrylate -2-( N, N-dimethylamino) ethyl ester (DM), acrylic acid -2-( N, N-dimethylamino) ethyl ester (DA), and so on. DMDAAC, DAC and DMC are more commonly made use of.

( 1) of DMDAAC.
Dimethyl diallyl ammonium chloride is a high pureness, polymerization grade, quaternary amine salt, high fee density cationic monomer, including trace sodium chloride and also other contaminations (controllable array), molecular formula is C8H16NCl, molecular weight. The molecular structure has alkenyl dual bonds, which can form linear homopolymers and also different copolymers via different polymerization reactions. DMDAAC as cationic monomer through homopolymerization or copolymerization to form polymer. In the process of water therapy can be made use of for decolorization [4], flocculation and purification, reliable and safe; Amongst daily chemicals, carding agents, moistening agents and antistatic agents can be made use of for hair shampoo; In oilfield chemicals, it can be used as flocculant, water blocking agent, and so on( 2) The Methyl acryloxyethyl trimethyl ammonium chloride (DMC).
Methyl acryloxyethyl trimethyl ammonium chloride (DMC), chemical formula CH2= C( CH3) COOCH2CH2N (CH3) 3C L -. DMC is a cationic monomer, which can be homopolymerized or copolymerized with various other monomers to prepare a cationic polymer. The polymer has strong polarity as well as affinity to anionic compounds, so it can be extensively used as a cationic flocculant. It can be used in sludge dewatering procedure of sewage treatment plant as well as wastewater treatment of papermaking, coal flotation, printing, dye as well as other markets. Furthermore, DMC can also be made use of to produce acid immune superabsorbent materials and oilfield chemicals.

( 3) The Acryloxyethyl trimethyl ammonium chloride (DAC).
Acryloxyethyl trimethyl ammonium chloride (DAC) is a quaternary ammonium salt generated by the response of dimethylaminoethyl acrylate and chloromethane, soluble in water. Molecular formula: CH2= CHCOOCH2CH2N( CH3) 3Cl-. Primarily used for homopolymerization or copolymerization with acrylamide to prepare cationic polymer flocculant. It is currently preferred to be replaced by methylacryloxyethyl trimethylammonium chloride.