Synthesis of High Molecular Weight Cationic Polyacrylamide
Cationic polyacrylamide is a derivative of polyacrylamide, a cationic polymer flocculant which has an excellent effect on sewage treatment. Our existing cationic polyacrylamide are mostly prepared by the Mannich reaction ,which has the shortcomings of more unreacted material, low cationic degree, poor stability, short validity, etc. Therefore, a cationic polyacrylamide has been prepared by
US9644320B2 US14/913,750 US201414913750A US9644320B2 US 9644320 B2 US9644320 B2 US 9644320B2 US 201414913750 A US201414913750 A US 201414913750A US 9644320 B2 US9644320 B2 US 9644320B2 Authority US United States Prior art keywords weight copolymer glyoxalated cationic cationic copolymer Prior art date 2013-09-09 Legal status (The legal status is an assumption and is not a legal conclusion.
High Molecular Weight Anionic Polyacrylamide - 10% Charge
High molecular weight anionic polyacrylamide a mole charge of 10% that has been developed for use in wastewater and effluent treatment applications. Accepta 4211 is ideal for use in mechanical dewatering, gravity settling, as a coagulant aid, water clarification, filtration, phosphate removal and as an aid in Dissolved Air Flotation (DAF)...
Cationic Polyelectrolyte High Molecular Weight 10 - 12million , Find Complete Details about Cationic Polyelectrolyte High Molecular Weight 10 - 12million,Cationic Polyacrylamide,Cationic Polyacrylamide,Cationic Polyacrylamide Cpam from Electronics Chemicals Supplier or Manufacturer-.
Synthesis of a cationic polyacrylamide with high molecular
Jin Xiaoxia, Sun Ji, Wang Hui (CNOOC Tianjin Research and Design Institute of Chemical Industry, Tianjin 300131, China);Research on the synthesis of the low-molecular weight cationic polyacrylamide[J];Industrial Water Treatment;2009-05 4
High molecular weight cationic polyacrylamide with a mole charge of 35%. Accepta 4221 is a very versatile dry polymer that is particularly useful for wastewater treatment applications including belt filter, centrifuge and screw press de-watering, water clarification, filtration, thickening or use in a Dissolved Air Flotation plant...
cationic polyacrylamide ,cationic polyacrylamide
Flopam FO4190 VHM is a kind of cationic polyacrylamide with 10-15% charge and medium molecular weight.Chinafloc C1312 can replace of FO4190 VHM totally with good performance. Cationic polyacrylamide of Zetag 8125 can be replaced by Chinafloc C2012
A commercial cationic polyacrylamide (CPAM) of high molecular weight (about 1.10 6) from BASF (Percol ® 55) was diluted at 0.1% (w/w) by dissolving it in deionized water under stirring. An aqueous solution of polyethylenesulfonate sodium salt (PES-Na) from Noviprofibre with a molecular weight of about 500,000 and a concentration of 10 −3 mol
EPO - T 0025/89 () of 7.5.1991
Since, however, none of the prior art documents cited in the proceedings teaches the use of low anionic polymers consisting of copolymers of acrylamide and 1 to 10 mole% acrylic acid and having a high molecular weight of above one million as fibre retention aid for newsprint or fluting medium manufacture, the Board cannot consider it obvious to
The polyacrylamide copolymer used was a dry granular material having an approximate molecular weight of 12–15 Mg mole −1, with an 18% negative charge density (provided by CYTEC Industries of Wayne, NJ and marketed under the trade name Superfloc 836A).PAM application involved the spread of granular PAM on the surface of an approximately 0.1 m 2 area in the furrow, corresponding to the first
Hydrolysis of polyacrylamide and acrylic acid–acrylamide
The hydrolysis of polyamides has been studied in buffered acid solution at 110°C. at an amide concentration of 0.05 M.In the case of polyacrylamide, the reaction was carried out in acetate buffer at different values of the ratio r (acetic acid/sodium acetate). The initial velocity is low and is proportional to the concentration of acetic acid; the rate constant is equal to 2.6 × 10 −6
Methods of making and using high molecular weight acrylamide polymers Abstract. Dispersions of finely divided high molecular weight polyacrylamide particles are formed and treated with a caustic material to hydrolyze the polymer without undesirable side chain reactions to form high molecular weight anionic acrylamide polymers.
- What is a high molecular weight nonionic polyacrylamide?
- High-molecular-weight nonionic polyacrylamides are routinely used in the mineral processing industries as thickeners and flocculants , , . 34.2.5. Polyacrylamide product forms The product types for polyacrylamides are solutions, liquids (emulsion or dispersion), and dry powders.
- What is cationic polyacrylamide (CPAM)?
- Cationic polyacrylamide (CPAM) is one of the most frequently used flocculants with high intrinsic viscosity and charge density. This flocculant is a water-soluble acrylamide-based polymer having cationic quaternary ammonium groups .
- Does cationic hydrophobically associating polyacrylamide have good salt resistance?
- Although it is generally believed that cationic hydrophobically associating polyacrylamide has good salt resistance [ 37, 38, 39 ], in this paper, due to the extremely low polymer concentration, the viscosity of the solution is still greatly reduced.
- What is high molecular weight polyacrylamide (PAM)?
- Provided by the Springer Nature SharedIt content-sharing initiative High molecular weight (106–3 × 107 Da) polyacrylamide (PAM) is commonly used as a flocculant in water and wastewater treatment, as a soil conditioner, and as a viscosity modifier and friction reducer in both enhanced oil recovery and high volume hydraulic fracturing.
