Poly Diallyldimethyi Ammonium Chloride Series

The Poly Diallyldimethyi Ammonium Chloride Series (PolyDADMAC, CAS: 26062-79-3) consists of synthetic, high-charge-density cationic polyelectrolytes produced through the polymerization of DADMAC monomers.

These products utilize quaternary ammonium groups to achieve charge neutralization and flocculation. They are classified primarily by molecular weight and viscosity to meet the specific process requirements of different industries, making them widely used functional polymer raw materials in fine chemicals and environmental remediation.

Product Series Overview

Full Chemical Name: Poly(diallyldimethylammonium chloride) homopolymer

CAS Name: 2-Propen-1-aminium, N,N-dimethyl-N-2-propenyl-, chloride homopolymer

CAS Number: 26062-79-3

1. The Poly Diallyldimethyl Ammonium Chloride series consists of strong cationic polymers formed by the homopolymerization of DADMAC cationic monomers; the molecular chains carry a large number of permanent quaternary ammonium cationic groups.

2. The finished products appear as colorless to pale yellow viscous liquids. They possess excellent water solubility, are non-flammable and non-explosive, and exhibit chemical stability.

3. This series is not sold as a single specification; instead, various sub-models are categorized based on molecular weight and viscosity. Different models exhibit distinct charge neutralization rates and flocculation capabilities, which directly determine their performance in actual industrial applications.

Product Types and Forms

1. Mainstream Industrial Liquid Grade

Colorless to pale yellow viscous liquid; this is the most widely used form on the market. The material can be diluted with water to prepare working solutions, making dosing and handling simple. It is suitable for large-scale, continuous production processes in water treatment, papermaking, and oilfield operations.

2. Specification Differentiation Logic

The core metrics distinguishing product grades are molecular weight and viscosity. Low-viscosity, low-molecular-weight grades focus on charge neutralization, dye fixation, and antistatic properties; medium-to-high-molecular-weight, high-viscosity grades focus on floc formation and sludge dewatering.

3. Physicochemical Parameters

Freezing point: -2.8°C; specific gravity: 1.04 g/cm³; decomposition temperature: 280--300°C. Aqueous solutions across the entire product series resist gelation, maintain performance over a wide pH range, and exhibit chlorine resistance.

Specification

Note: Content, pH, Viscosity can be customized.

Production Process

1. Polymer-grade DADMAC cationic monomers serve as the base raw material; high-molecular-weight chains are synthesized via aqueous-phase free-radical polymerization without the introduction of extraneous organic solvents.

2. Polymer molecular weight and system viscosity are precisely controlled by adjusting polymerization temperature, reaction duration, and initiator dosage, yielding various grades of PolyDADMAC products.

3. Post-reaction filtration and impurity removal processes yield a clear, homogeneous liquid product. The entire production flow is managed via a closed-loop system to minimize batch-to-batch fluctuations in molecular weight and charge density, ensuring consistent product quality.

Key Performance Advantages

1. Consistent High Charge Density

The long molecular chains incorporate a high number of quaternary ammonium cationic groups, resulting in high charge density and permanent charge stability. Upon introduction into water, the product rapidly neutralizes negatively charged colloids, suspended particles, and organic impurities; it reduces inter-particle repulsion and promotes the aggregation and settling of fine impurities, making it highly effective as a primary coagulant.

2. Strong Adaptability to Operating Conditions

Unlike weakly cationic materials such as polyethyleneimine or chitosan, the quaternary ammonium groups within PolyDADMAC fully dissociate across a wide pH range, retaining cationic activity regardless of acidity or alkalinity fluctuations. It also exhibits excellent tolerance to residual chlorine in water, thereby reducing the risk of reagent deactivation.

3. Safety and Stability

The Poly Diallyldimethyi Ammonium Chloride Series features excellent water solubility and is non-toxic and non-flammable. The aqueous solutions are highly stable and do not gel or degrade under normal usage conditions. With clearly defined freezing points and thermal decomposition parameters, it is easy for factories to establish standardized procedures for storage and dosing.

4. Versatility

Leveraging its strong cationic properties and water solubility, this product series—available in various specifications—is suitable for six major sectors: water purification, wastewater treatment, papermaking, textile printing and dyeing, oilfields, and personal care. This versatility helps customers reduce the management costs associated with sourcing multiple types of raw materials.

Global Industrial Applications

1. Water Treatment Industry: Used as a primary coagulant for raw water purification and industrial wastewater treatment; also utilized for sludge dewatering in the mining sector, handling various types of mineral slurries such as coal, taconite, trona, sand and gravel sludge, and titanium dioxide slurry.

2. Textile Printing and Dyeing: Used as a formaldehyde-free fixing agent to enhance fabric color fastness while eliminating the risks associated with formaldehyde residues found in traditional fixing agents.

3. Papermaking Industry: Used to prepare conductive coatings for conductive paper production; also acts as an AKD sizing promoter to improve sizing and sheet formation.

4. Personal Care & Daily Chemicals: Functions as a conditioning agent, antistatic agent, and wetting agent in formulations for shampoos and skin care products.

Supply Capabilities

1. Packaging Specifications: Available in 50kg, 125kg, and 200kg plastic drums, as well as 1000kg IBC totes; standard industrial packaging options are supported.

2. Storage and Transport: Poly Diallyldimethyi Ammonium Chloride Series need store in a sealed container in a cool, dry warehouse, away from strong oxidizing agents. Transported as non-hazardous goods. Shelf life: 24 months.

3. Supply & Support: Ewooan possesses a complete industrial chain for cationic monomers and polymers; our PolyDADMAC production relies on in-house DADMAC monomer capacity, ensuring autonomous control over raw materials. We provide samples for laboratory performance verification, schedule production based on order volume, and facilitate bulk delivery to global customers. Additionally, we offer technical guidance on product selection to help customers identify the most suitable grades.