CHEMICAL AND PHYSICAL PROPERTY
| Item | Index |
| Appearance (25℃) | Colourless to pale yellow transparent liquid |
| Solid content | ≥98% |
| Volatile matter | ≤2% |
APPLICATIONS
(1) PU may be employed in polyurethane systems:
- For flexible foams, recommended dosage: 0.05–0.2%;
- For rigid foams, recommended dosage: 0.1–0.3%;
- For semi-rigid foams, recommended dosage: 0.05–0.2%;
- For bio-based foams, recommended dosage: 0.1–0.3%.
(2) PU may be employed as a raw material for synthesising polyquaternary ammonium salt-2 (WT).
PACKAGE
stored in cool, dry and well-ventilated place, shelf life 2 years.
Strategic Raw Material for Additive Synthesis
Fengfan PU, chemically known as N,N'-bis(3-dimethylaminopropyl)urea, serves as the foundational raw material for the synthesis of advanced electroplating additives. This product is specifically positioned for surfactants manufacturers and chemical synthesis laboratories that produce cationic polymers, particularly Polyquaternium-2 (WT). Unlike finished brighteners, PU is a reactive intermediate. Its primary function is to react with 2,2'-dichlorodiethyl ether to form the high-molecular-weight leveling agents essential for alkaline non-cyanide zinc plating. By ensuring the highest purity of this urea derivative, we enable downstream synthesizers to control the polymerization process precisely. This results in a final polymer that offers superior throwing power and brightness distribution. For the chemical industry, PU represents the critical starting point for creating value-added performance chemicals used in metal finishing, distinguishing it from general-purpose industrial ureas.
Chemical Reactivity and Molecular Specifications
Technically, PU (CAS 52338-87-1) acts as a specialized surface active agent precursor. It is characterized by its diamine structure bridged by a urea group, which provides the necessary nitrogen density for cationic charge generation upon quaternization. The core parameter of our PU is its assay purity (>98.0%) and low moisture content. These specifications are vital because impurities can act as chain terminators during the subsequent polymerization reaction, leading to low molecular weight oligomers that fail to perform in the plating bath. The product is a clear to yellowish liquid with a specific amine value that must be strictly maintained to ensure stoichiometric balance during synthesis. Unlike standard anionic surfactants which are negatively charged, the derivatives made from PU are cationic, designed to adsorb specifically at the cathode to inhibit zinc dendrite formation.
Downstream Application in Metal Finishing
In the broader context of surface engineering, the derivatives of PU are indispensable for the automotive and aerospace plating sectors. While PU itself is not added directly to the tank, it is the parent molecule for the "WT" leveling agent found in almost every modern alkaline zinc bath. Its application value is derived from its ability to facilitate the creation of polymers that replace toxic cyanide systems. For a surfactant supplier, offering high-grade PU is crucial for supporting the green plating revolution. The polymers derived from this intermediate work synergistically with other bath components to produce ductile, blister-free zinc coatings. This chemical reliability ensures that the final plated parts—such as screws, fasteners, and brackets—pass rigorous corrosion tests, maintaining the integrity of the supply chain from chemical synthesis to final assembly.
Product Advantages
High-Purity Synthesis Architecture
The structural advantage of Fengfan’s PU lies in our advanced synthesis architecture. We utilize a controlled condensation process that minimizes the formation of by-products such as unreacted amines or thermal degradation fragments. For surfactants manufacturers, raw material purity is the strongest predictor of final product quality. Our PU ensures a linear polymerization trajectory when reacted with ether, resulting in a consistent viscosity profile in the final product. This design focus mitigates the risk of batch-to-batch variation that plagues generic sources. By removing trace contaminants at the precursor stage, we prevent the "hazing" issues that can occur in the final electroplating bath. This purity allows synthesizers to push the reaction to higher conversion rates, improving yield and economic efficiency in their own production lines.
Optimized Reaction Kinetics for Polymerization
Fengfan PU is engineered to exhibit optimal reaction kinetics. The accessibility of the tertiary amine groups on the propyl chains is maximized to facilitate the quaternization reaction. This functional characteristic distinguishes it from lower-grade intermediates where steric hindrance or impurities might slow down the synthesis. While a standard surfactant detergent is designed for passive cleaning, our PU is designed for active chemical transformation. It allows the chemical engineer to fine-tune the molecular weight distribution of the resulting Polyquaternium-2. This control is essential for creating leveling agents that work across a wide current density range. The consistent reactivity of our PU means that manufacturers can rely on standard reaction times and temperatures, reducing the need for constant process adjustment and quality control interventions in the reactor.
Supply Chain Stability and Technical Integration
From a system adaptation perspective, sourcing PU from a dedicated manufacturer like Fengfan provides supply chain security. We understand that PU is a niche but critical component. Unlike generic anionic surfactants that are widely available, high-quality diaminoarea is specialized. We offer consistent volume supply to support continuous production schedules. Furthermore, our technical team provides guidance on the handling and storage of PU to prevent amine oxidation, which can darken the product and affect the color of the final polymer. This integration of product quality and technical support offers immense value to our partners. It allows them to produce clear, shelf-stable brighteners that compete with top global brands, ensuring that their end-users (the plating shops) receive a product that performs flawlessly in the tank.
Use Scenarios
Synthesis of Alkaline Zinc Leveling Agents
A Senior Polymer Chemist at a plating additive manufacturing plant is tasked with producing a batch of Polyquaternium-2 (WT). The process involves reacting N,N'-bis(3-dimethylaminopropyl)urea with dichloroethyl ether. The chemist selects Fengfan PU as the starting material due to its precise amine value. By acting as the core surface active agent precursor, the PU reacts exothermically to form the cationic polymer chain. The high purity of the Fengfan PU ensures that the reaction proceeds without creating insoluble gels or precipitates. The resulting WT polymer is then used as the main ingredient in the company’s flagship zinc brightener, providing the leveling power required to plate complex geometries without burning the edges.
Formulating High-Performance Additive Packages
A Product Manager at a chemical blending house is updating their catalog of zinc plating intermediates. They need to source reliable raw materials to blend their own "Make-Up" concentrates. While they source anionic surfactants for their pre-treatment cleaners, they need a specific source for the synthesis of their brightener system. They partner with Fengfan as their surfactant supplier for PU. Using this PU, they synthesize their own proprietary polymers in-house, giving them control over the final product's performance. The consistency of the PU allows them to automate their reactor settings, reducing labor costs and ensuring that every drum of brightener they sell meets the strict specifications of their automotive clients.
R&D for Novel Cationic Polymers
A Research Scientist in a university materials lab is investigating new corrosion inhibitors for steel. They are experimenting with modifying urea-based polymers to improve film-forming properties. The scientist uses Fengfan PU (CAS 52338-87-1) as the backbone molecule. They appreciate the product's chemical definition and lack of unknown isomers. By reacting this intermediate with various alkylating agents, they create novel cationic structures. Although distinct from a household surfactant detergent, the research aims to utilize the surface activity of these new PU-derived molecules to displace water and form a protective monolayer on metal surfaces. The reliability of the starting material is crucial for generating reproducible scientific data and developing next-generation industrial coatings.
About Us
Shandong Fengfan Electrochemical is a specialized manufacturer dedicated to the synthesis of fine chemical intermediates for the electroplating industry. We are not merely a trading company; we are expert producers of critical precursors like N,N'-bis(3-dimethylaminopropyl)urea (PU). Our facility is equipped with advanced synthesis reactors and purification systems designed to meet the rigorous demands of surfactants manufacturers globally. We understand the intricate chemistry of alkaline zinc plating and the vital role that high-purity intermediates play in the final coating quality. Our portfolio extends beyond basic commodities to include specialized surface active agent precursors that drive performance in metal finishing. While we acknowledge the importance of anionic surfactants in pre-treatment, our core competency lies in the cationic chemistries used in the plating tank. We are committed to empowering our partners with reliable, high-assay raw materials and technical support, ensuring you can synthesize the best possible additives for your customers.
Contact our chemical synthesis team for a PU sample today!
FAQ
What is the primary application of Fengfan PU (CAS 52338-87-1)?
Its primary application is as a raw material intermediate. It is reacted with 2,2'-dichlorodiethyl ether to synthesize Polyquaternium-2 (WT), which is the standard cationic surface active agent and leveling agent used in alkaline non-cyanide zinc plating baths.
Is PU used directly in the plating bath?
No, PU is an intermediate. It must undergo polymerization to become effective. Plating shops typically buy the finished polymer (WT) or a brightener package, while surfactants manufacturers buy our PU to synthesize that polymer.
What is the purity of your PU?
We guarantee an assay of >98.0%. High purity is critical because impurities can terminate the polymerization reaction prematurely, leading to poor-quality leveling agents that fail to perform in the plating process.
Can you supply PU for export?
Yes, we are an experienced surfactant supplier for the global market. We have all necessary transport certifications for chemical export and can supply PU in standard 200kg drums or IBC totes to meet your manufacturing scale.
How does PU differ from standard detergents?
PU is a reactive chemical intermediate used for synthesis, whereas a surfactant detergent is typically a finished formulation used for cleaning. PU creates the polymers that plate metal; detergents remove soil.
