Product Name: Poly(Dimethylamine-Co-Epichlorohydrin)
CAS Number: 25988-97-0
Appearance: Usually appears as a colorless to light - yellow viscous liquid.
Molecular Formula: It is a copolymer with a complex molecular structure formed by the reaction of dimethylamine and epichlorohydrin. The exact formula may vary depending on the degree of polymerization.
Solubility: It is generally soluble in water, which makes it convenient for various applications in aqueous systems.
Stability: Under normal storage conditions (cool, dry place), it has good stability. However, it should be kept away from strong oxidizing agents and high - temperature environments.
1. Water Treatment: This product is widely used in water treatment processes. It can act as a flocculant and coagulant, helping to remove suspended solids, colloidal particles, and organic matter from water. In municipal water treatment plants, it can improve the clarity of water and reduce the turbidity, making the water suitable for further treatment and consumption.
2. Paper Industry: In the paper - making process, Poly(Dimethylamine - Co - Epichlorohydrin) is used as a wet - strength resin. It can enhance the strength of paper when it is wet, which is crucial for products such as paper towels, tissue papers, and packaging papers that may come into contact with water during use.
3. Textile Industry: It can be used in textile finishing processes. It can improve the dye - fixing ability of fabrics, making the dyes adhere more firmly to the fibers, resulting in better color fastness. Additionally, it can also provide anti - static and anti - wrinkling properties to the textiles.
1. Water Treatment: For water treatment applications, the product is usually added to the water in a dissolved state. First, prepare an appropriate concentration of the solution according to the water quality conditions. The dosage typically ranges from a few milligrams per liter to tens of milligrams per liter. Mix the solution well with the water to ensure uniform dispersion. The mixing time and intensity should be adjusted according to the specific treatment requirements.
2. Paper Industry: In the paper - making process, it is added to the pulp at a specific stage. The addition amount is usually determined by the type of paper being produced and the desired wet - strength properties. It is recommended to conduct small - scale tests first to optimize the dosage. After adding, ensure thorough mixing of the resin with the pulp to achieve the best results.
3. Textile Industry: When used in textile finishing, it is applied to the fabric through methods such as padding or spraying. The concentration of the treatment solution and the processing parameters (such as temperature and pressure) need to be carefully controlled according to the fabric type and the required performance.
1. Water Treatment Case: A municipal water treatment plant in a medium - sized city was facing problems with high turbidity in the raw water. After using Poly(Dimethylamine - Co - Epichlorohydrin) as a flocculant, the turbidity of the treated water decreased from an average of 50 NTU to less than 5 NTU. The dosage was optimized at 15 mg/L after a series of tests. This not only improved the water quality but also reduced the cost of subsequent filtration processes.
2. Paper Industry Case: A paper mill producing packaging papers wanted to enhance the wet - strength of their products. By using this product as a wet - strength resin, they increased the wet - tensile strength of the paper by 30%. The addition amount was 1% of the pulp weight. This improvement made their packaging papers more competitive in the market, especially for products that needed to withstand moisture during transportation.
3. Textile Industry Case: A textile factory was struggling with poor color fastness of their dyed fabrics. After treating the fabrics with Poly(Dimethylamine - Co - Epichlorohydrin), the color fastness to washing increased from grade 2 to grade 4. The treatment solution concentration was 2% (w/v), and the fabrics were padded at a temperature of 80°C for 2 minutes. This significantly improved the quality of their textile products.
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