When it comes to large-scale exports of epoxy resins—whether in liquid, solid, or semi-solid form—ensuring safe transport, regulatory compliance, and on-time delivery is essential. At Yolatech, we’ve compiled the following practical tips to help professionals in trade, manufacturing, and logistics plan more efficiently and execute with confidence.

 

1. Choose the Right Packaging Format

Proper packaging is the first line of defense against leakage, contamination, and damage during transport.

• Liquid resins: We recommend 200L/240KG steel drums, 1000L IBC tanks, or ISO tank containers for bulk shipping. Packaging must be leak-proof and corrosion-resistant.

• Solid resins: Typically packed in multi-layer kraft paper bags with plastic liners or fiber drums to prevent moisture ingress.

• Semi-solid resins: Should be stored in tightly sealed metal or thick plastic drums to avoid deformation or softening, especially in hot climates.

Tip: Labels should clearly display product name, batch number, net/gross weight, and hazard symbols if applicable.

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2. Follow Dangerous Goods Transport Regulations

Some epoxy resins are classified as hazardous materials. It is important to:

• Check the MSDS (Material Safety Data Sheet) for transport classification;

• Ensure compliance with IMDG (marine), IATA (air), or ADR (road) regulations depending on the shipping mode;

• Apply proper hazard labels on all packaging (e.g., corrosive, environmentally hazardous).

Following regulations is not only a legal requirement but also critical for safety and customs clearance.

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3. Palletizing and Load Securing

To improve handling and protect goods during shipment:

• Use fumigated wood pallets (with IPPC marking) or plastic pallets, depending on import country requirements;

• Secure all drums or bags on pallets using stretch film and strapping bands;

• Add anti-slip sheets, corner guards, or partition pads to reduce movement and minimize risk of damage.

   

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4. Plan Routes and Schedules Carefully

Some specialty epoxy resins are sensitive to heat and should not be exposed to high temperatures for extended periods. In summer, refrigerated containers are recommended to maintain product stability.

Be sure to check the customs regulations, public holidays, and vessel schedules at both origin and destination. Build in sufficient lead time to avoid unexpected delays.

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5. Work with Experienced Logistics Partners

Partner with freight forwarders who have specific experience handling chemical and hazardous goods shipments.

For first-time shipments or newly adopted packaging methods, we recommend thorough pre-shipment coordination between seller and buyer to confirm all details, including labeling, pallet configuration, and document accuracy.

Maintain real-time communication with both the logistics provider and your customer throughout the shipping process.

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6. Prepare All Required Documentation in Advance

Common export documents include:

• Commercial invoice & packing list

• COA (Certificate of Analysis) or test report

• Bill of Lading (B/L) or Air Waybill (AWB)

• Export license, MSDS, or Certificate of Origin (as required by the destination country)

Ensure all document content is consistent with product labels to avoid clearance delays or inspection issues.

 

Proper packaging, complete documentation, and efficient logistics planning are the cornerstones of successful epoxy resin exports. As a professional manufacturer, Yolatech understands that every shipment is not just a delivery—it’s a commitment to quality and reliability.

 

If you need support in selecting epoxy resin products, designing packaging solutions, or arranging international shipments, feel free to reach out to the Yolatech team. With stable products and responsive service, we’re here to support your global operations with confidence.

Physicochemical Properties

N,N-Dimethylaniline (abbreviated as DMA), also known as dimethylphenylamine, has the molecular formula C₆H₅N(CH₃)₂ and a molecular weight of 121. It is a pale yellow oily liquid with a melting point of 2.45 °C, a boiling point of 194 °C, a flash point of 62.8 °C, and a relative density of 0.9557 (20/4 °C). It is sparingly soluble in water but soluble in methanol, ethanol, propanol, chloroform, diethyl ether, and aromatic organic solvents.

 

Chemical Properties

N,N-Dimethylaniline exhibits weak basicity and reacts with picric acid to form a picrate salt with a melting point of 163–164 °C. It reacts with alkyl halides to yield quaternary ammonium salts. Upon reduction, it can yield dihydro-N,N-dimethylaniline or tetrahydro-N,N-dimethylaniline, depending on the reaction conditions. Hydrogenation using palladium as a catalyst yields cyclohexanone and dimethylamine. N,N-Dimethylaniline is readily oxidized; oxidation with potassium permanganate or with concentrated sulfuric acid at 190–200 °C yields tetramethylbenzidine. Oxidation with manganese dioxide in chloroform yields N-formylmethylaniline. Oxidation with neutral hydrogen peroxide or peracids yields dimethylaniline oxide [C₆H₅N(CH₃)₂O]. When reacted with acylating agents, the methyl groups are substituted by acyl groups. Reaction with tetranitromethane in pyridine results in nitrosation of the methyl group rather than substitution on the benzene ring. Halogenation, nitration, and sulfonation reactions occur at the ortho and para positions, while nitrosation, coupling, and Friedel–Crafts reactions take place at the para position.

 

Toxicology

N,N-Dimethylaniline is highly toxic, with toxicity similar to that of aniline. It can cause poisoning via inhalation of its vapor or absorption through the skin. It exhibits hematotoxicity, neurotoxicity, and carcinogenic potential. The maximum allowable concentration in air is 5 ppm. Contact with skin should be avoided. Adequate ventilation and closed equipment are required at the worksite, and operators must wear appropriate protective equipment.

 

Its toxicity resembles that of aniline, suppressing the central nervous and circulatory systems, and causing headaches, weakness, local or systemic hypoxia, cyanosis of the skin and mucous membranes, dizziness, and respiratory distress. It can be absorbed through the skin, causing poisoning. Upon skin contact, immediately wash thoroughly with concentrated soapy water. The odor threshold concentration is 0.024 mg/m³. According to Chinese standard TJ 36-79, the maximum allowable concentration in workshop air is 5 mg/m³.

Stability ：Stable

Incompatible Materials：Acids, acid anhydrides, acyl chlorides, chloroform, halogens

Conditions to Avoid Heat

Hazardous Polymerization ：Will not occur

 

The physicochemical properties of High-purity N,N-dimethylaniline are relatively stable, making it a fundamental organic raw material for the synthesis of fine chemical intermediates used in pharmaceuticals, pesticides, dyes, pigments, and other products.

 

Main Applications

As a fundamental organic raw material for the synthesis of fine chemical intermediates, N,N-dimethylaniline has a wide range of applications. It serves as a major dye intermediate for manufacturing triphenylmethane (basic) dyes, including Basic Yellow, Basic Violet 5BN, Basic Green, Victoria Blue BB, Basic Brilliant Blue R, Cationic Red BL, Brilliant Red 5GN, Violet 3BL, and Brilliant Blue. In the pharmaceutical industry, it is used in the production of cephalosporin V, sulfamonomethoxine, and sulfadoxine. In the fragrance industry, it is used to produce vanillin and other aromatic aldehydes. Additionally, it is used as a solvent, a rubber vulcanization accelerator, and a stabilizer for explosives.

 

(1) N,N-Dimethylaniline is one of the basic raw materials for producing basic dyes (triphenylmethane dyes, etc.) and other basic dyes. Major products include Basic Yellow, Basic Violet 5BN, Basic Green, Victoria Blue, Brilliant Red 5GN, and Brilliant Blue. In the pharmaceutical industry, it is used to manufacture cephalosporin V, sulfamonomethoxine, sulfadoxine, and flucytosine. In the fragrance industry, it is used to produce vanillin.

(2) It is employed as a solvent, a metal corrosion inhibitor, an epoxy resin curing agent, a curing accelerator for polyester resins, and a co-catalyst for the polymerization of vinyl compounds. It is also used in the preparation of basic triphenylmethane dyes, azo dyes, and vanillin.

(3) In combination with organotin compounds, it is used as a catalyst for the production of polyurethane foam. It also serves as a rubber vulcanization accelerator and a raw material for explosives and pharmaceuticals. It is one of the basic raw materials for producing basic dyes (triphenylmethane dyes, etc.) and other basic dyes, including Basic Yellow, Basic Violet 5BN, Basic Green, Victoria Blue, Brilliant Red 5GN, and Brilliant Blue. N,N-Dimethylaniline is also a raw material for the manufacture of dozens of pharmaceuticals and pharmaceutical intermediates, including cephalosporin V, sulfadimethoxine, sulfamethoxazole, sulfamonomethoxine, sulfadoxine, and flucytosine.

(4) It is used as a curing accelerator for epoxy resins, polyester resins, and anaerobic adhesives, enabling rapid curing of anaerobic adhesives. It can also be used as a solvent, a co-catalyst for polymerization of vinyl compounds, a metal corrosion inhibitor, a UV absorber for cosmetics, and a photosensitizer. Additionally, it is used as a raw material for manufacturing basic dyes, disperse dyes, acid dyes, oil-soluble dyes, and fragrances (e.g., vanillin).

(5) It is used as a reagent for the spectrophotometric determination of nitrite. It is also employed as a solvent and in organic synthesis.

(6) It is utilized as a dye intermediate, solvent, stabilizer, and analytical reagent.

Yolatech's m-Xylylenediamine (MXDA, CAS No.: 1477-55-0), also known as 1,3-benzenedimethanamine, is an epoxy resin curing agent belonging to the class of aliphatic amines containing a benzene ring. It has the molecular formula C8H12N2 and appears as a colorless liquid at room temperature.

 

As an epoxy resin curing agent, it combines the characteristics of both aliphatic and aromatic amines. It features low viscosity and can cure at room temperature. The benzene ring in its molecular structure endows the cured product with superior heat resistance, water resistance, acid and alkali resistance, and chemical resistance compared to ethylene amines. Consequently, it is widely used in casting, bonding, and anti-corrosion coatings. It also serves as a raw material for producing photosensitive plastics, rubber auxiliaries, polyurethane resins, and coatings, as well as an intermediate in organic synthesis.

 

1. m-Xylylenediamine and its Derivatives

 （1）MXDA → Hydrogenation → 1,3-BAC

• Features:
  • Low viscosity
  • Low freezing point
  • Good gloss

（2）MXDA + ECH → G-328

• Features:
  • Good chemical resistance
  • Good adhesion
  • Good low-temperature properties
  • Low CO₂ absorption

（3）MXDA → Deamination → PMDA

• Features:
  • Good electrical properties
  • Low toxicity
  • High and low temperature resistance

（4）Modified G-328

• Produced by reacting with condensed glycerol ester mixtures
• Features:
  • Good metal adhesion

（5）MXDA + Styrene → Gaskamine 240

• Features:
  • Long operating time (long pot life)
  • Stable color
  • Low CO₂ absorption

 

 

2. Synthesis of m-Xylylenediamine (Yolatech MXDA)

(1) Preparation of Isophthalonitrile

Isophthalonitrile is prepared by the ammoxidation of m-xylene with ammonia and air in a fluidized bed catalytic reactor. The catalyst used is V2O5-Cr2O3-SiO2, and the reactor bed temperature is maintained at 400–415℃. The generated isophthalonitrile is collected via thin-walled condensation, then washed with water, dehydrated by centrifugation, and dried to obtain the final product. The consumption per ton of isophthalonitrile is 1200 kg of m-xylene (90%), 1200 kg of liquid ammonia (99%), and 3 kg of catalyst.

 

(2) Preparation of m-Xylylenediamine

Isophthalonitrile, alcohol, and potassium hydroxide are mixed and dissolved, then added to a high-pressure autoclave, followed by the addition of a Raney nickel catalyst paste. The relevant valves are closed, and the air inside the autoclave is evacuated. The vessel is purged with nitrogen several times until all air is removed. After evacuating the nitrogen, hydrogen is pressurized into the autoclave. Under stirring, the temperature is raised to about 90℃, and the hydrogen pressure is regulated and maintained at 4.5 MPa. Under these reaction conditions, hydrogen is continuously supplied until absorption ceases. The mixture is then cooled, excess pressure is released, and the material is discharged and filtered to recover the catalyst. The filtrate is sent to a fractional distillation unit. The alcohol is first distilled off at atmospheric pressure, followed by vacuum distillation. The fraction collected at 143–147℃ under 1.867 kPa is the finished product.

 

 

3. Application Fields of Yolatech MXDA

(1) Epoxy Resin Curing Agent: Accounts for 75% of total consumption, used in anti-corrosion coatings, adhesives, and other fields due to its excellent room-temperature curing performance and low toxicity.

(2) Nylon MXD6: Used as a polymerization monomer to prepare high-performance engineering plastics. It is applied in automotive lightweighting (e.g., Tesla engine components), robot joints, food packaging, and other fields. The global MXD6 market size is expected to exceed $1 billion by 2025.

(3) Pharmaceutical Intermediate: Used in the synthesis of anti-tumor drugs and antibacterial agents, accounting for about 10% of the market.

 

 

 

In the world of industrial coatings, adhesives, composites, and electrical insulation, epoxy resins are essential for their outstanding performance and versatility. Among them, YLE-128 epoxy resin stands out as a high-quality Bisphenol-A based liquid epoxy resin that is trusted by manufacturers and formulators worldwide. In this article, we’ll explore what YLE-128 is, its key properties, typical applications, and why it is considered a reliable and consistent alternative to mainstream options like Epon 828, YD-128, and D.E.R. 331.

What Is YLE-128?

YLE-128 is a liquid Bisphenol-A type epoxy resin with a medium molecular weight and an epoxy equivalent weight (EEW) typically ranging between 184–194 g/eq. It is produced through the reaction of Bisphenol-A with epichlorohydrin, resulting in a highly reactive resin with excellent chemical resistance, mechanical strength, and adhesion characteristics.

This resin is often referred to as a standard liquid epoxy resin (LER) and serves as a base component for many two-component systems, especially when combined with various hardeners (amines, anhydrides, etc.).

Key Properties of YLE-128

Property	Typical Value
Appearance	Clear, colorless to pale yellow liquid
Viscosity @ 25°C	11,000–15,000 mPa·s
Epoxy Equivalent Weight	184–194 g/eq
Color (Gardner)	≤ 1
Density @ 25°C	~1.16 g/cm³
Flash Point (Closed cup)	> 150°C

 

 

These properties make YLE-128 suitable for both ambient and heat-cure formulations across multiple industries.

 

Applications of YLE-128 Epoxy Resin

Thanks to its versatility, YLE-128 is used in a wide range of industrial and commercial applications:

1. Protective Coatings

• Used in anti-corrosion coatings for pipelines, storage tanks, marine equipment, and concrete floors.
• Offers excellent chemical resistance and strong adhesion to substrates.

2. Adhesives

• Applied in structural adhesives for metal, plastic, wood, and composite bonding.
• Compatible with a variety of curing agents to tailor performance.

3. Composites

• Widely used in wind turbine blades, automotive components, and sporting goods.
• Reinforced with glass or carbon fibers for lightweight strength.

4. Electrical Insulation

• Suitable for potting and encapsulating transformers, insulators, and circuit boards.
• High dielectric strength and excellent dimensional stability.

5. Construction

• Utilized in flooring systems, epoxy mortars, and anchoring applications.
• Good resistance to moisture, solvents, and mechanical wear.

Why Choose YLE-128?

A Reliable Alternative to Global Brands

• ✅ Consistent Quality: Manufactured under strict quality control, YLE-128 offers batch-to-batch consistency.
• ✅ Competitive Pricing: More cost-effective than Western brands without compromising performance.
• ✅ Flexible Supply: Readily available and supported by responsive technical service.
• ✅ Global Compatibility: Interchangeable with industry-standard grades such as:
• Epon 828 (Hexion)
• D.E.R. 331 (Dow)
• YD-128 (Kukdo)

Final Thoughts

YLE-128 epoxy resin has proven itself as a reliable, high-performance material across multiple industries. Whether you are formulating coatings, adhesives, or insulation systems, YLE-128 offers the performance of top international brands with the added benefits of affordability and dependable supply.

For formulators seeking a Bisphenol-A based liquid epoxy resin that meets demanding standards, YLE-128 is a name worth remembering.

YLEP-638 Structural Characteristics

The molecular backbone of YLEP-638 is a phenolic novolac structure formed by the condensation of phenol and formaldehyde, providing a rigid aromatic framework. This backbone itself has very high thermal stability and rigidity.
On this phenolic framework, the hydroxyl groups react with epichlorohydrin to introduce multiple epoxy groups, making it a typical multifunctional epoxy resin. Unlike standard bisphenol-A type epoxy resins (such as E-51, functionality ≈ 2), YLEP-638 usually has an average epoxy functionality of 3.5 to 4.0 or even higher.

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Performance Features of YLEP-638

Outstanding Heat Resistance

• Origin: High crosslink density (resulting from high functionality) and rigid aromatic backbone.

• Performance: The cured product exhibits extremely high glass transition temperature (Tg) and heat distortion temperature (HDT), typically above 200°C and even up to 250°C. It maintains mechanical strength and dimensional stability under high temperatures with excellent creep resistance.

Exceptional Mechanical Strength and Modulus

• Origin: Dense three-dimensional crosslinked network and rigid molecular chains.

• Performance: The cured product shows very high hardness, compressive strength, tensile strength, and modulus, giving it strong load-bearing capacity.

Excellent Chemical Resistance

• Origin: The high crosslink density creates a compact and chemically inert network structure, making it difficult for solvents or chemical agents to penetrate or swell the material.

• Performance: It offers outstanding resistance to a wide range of organic solvents, acids, and alkalis. Its chemical resistance, particularly at high temperatures, is far superior to that of conventional epoxy resins.

Superior Electrical Insulation Properties

• Origin: Stable chemical structure and high crosslink density.

• Performance: Maintains excellent dielectric strength and volume resistivity even under high temperature and humidity conditions.

Processing Challenges

• High Viscosity: Due to its high functionality and rigid structure, YLEP-638 has very high viscosity at room temperature and must be heated (e.g., to 60–80°C) for casting, impregnation, or prepreg preparation.

• High Brittleness: The high crosslink density and rigid structure also result in low toughness, poor impact resistance, and low elongation at break, so it often requires the addition of toughening agents.

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Main Applications of YLEP-638

• YLEP-638 + DOPO
  Used to produce halogen-free phosphorus-containing epoxy systems, successfully incorporating efficient phosphorus-based flame-retardant units into a high crosslink density epoxy network. The resulting materials combine excellent mechanical properties, heat resistance, and flame retardancy, making them ideal for green electronic encapsulation, halogen-free PCBs, high-performance flame-retardant insulating materials, and aerospace composites. Also used in carbon fiber prepregs, tennis rackets, and golf clubs.

  

 

• YLEP-638 + Methacrylic Acid / Styrene
  Used to produce high-temperature- and corrosion-resistant phenolic epoxy vinyl ester resins, widely applied in flue gas desulfurization (FGD), power plant desulfurization tower linings, chemical storage tanks, and scrubbers for harsh environments.

  

 

• YLE-128 + YLEP-638 + YLE-601 or YLE-604
  Used for solder mask inks in copper-clad laminates and for anti-corrosion, high-temperature coatings (such as 900–1200°C heat-resistant and anti-oxidation coatings).

  

 

• YLEP-638 + Curing Agent DDS
  Used to produce epoxy insulating varnishes for VPI (Vacuum Pressure Impregnation) processes, forming a strong, integrated “armor” layer on electrical coils. This layer resists high-voltage breakdown and withstands the intense heat and mechanical stress generated during motor operation. It is an essential insulation material for modern high-end electrical equipment, used in high-voltage motors, wind power generators, and traction motor stator coils, providing both insulation and flame-retardant protection. Also used in the manufacture of insulating tubes, rods, and plates.

  

Yolatech Company DMP-30 Equivalent Grades: K54, KH-30, HI-54K, HY960.

 

Yolatech DMP-30 consists of 2,4,6-Tris(dimethylaminomethyl)phenol. It is a versatile curing accelerator designed to shorten the curing time of epoxy resin systems. It exhibits excellent compatibility with Polyamine and Polyamide series epoxy curing agents. It is soluble in alcohol, benzene, acetone, and cold water, and slightly soluble in hot water.

 

Physical Properties

• Chemical Name: 2,4,6-Tris(dimethylaminomethyl)phenol
• Synonyms: DMP-30 / K-54 / Accelerator Catalyst HI-54K
• Molecular Formula: C₁₅H₂₇N₃O
• Molecular Weight: 265.4
• CAS Number: 90-72-2
• EINECS Number: 202-013-9
• Appearance: Transparent light yellow liquid
• Color: Max 6 (Gardner)
• Amine Value: 580-630 mgKOH/g
• Viscosity (25°C): 100-300 cps (Brookfield)
• Moisture Content: Max 0.5%
• Refractive Index (20°C): 1.5150-1.5200
• Specific Gravity (25°C): 0.97-0.99
• Flash Point: 150°C

 

 

Applications

DMP-30 serves as a curing accelerator in solvent-based or solvent-free epoxy systems, including:

• Polyamine series curing systems.
• Polyamide and Amidoamine series epoxy curing systems.
• Mercaptan (Thiol) series epoxy curing systems.
• Carboxylic Acid Anhydride or Polysulfide series epoxy curing systems.

It is widely used in coatings, adhesives, and flooring industries. It acts as a catalyst for epoxy automotive body adhesives, epoxy-anhydride systems, and as a solid catalyst for isocyanates and polyols.

 

 

Mechanism of Action

The reaction between epoxy resin (containing epoxy groups) and amine curing agents (such as aliphatic amines and polyamides) is a nucleophilic ring-opening reaction: the amine group (-NH₂) attacks the ring of the epoxy group, opening the ring to form hydroxyl groups (-OH), which then undergo further crosslinking.However, this reaction is slow at room temperature (especially in low-temperature environments). DMP-30's phenolic hydroxyl group activates the epoxy group via hydrogen bonding, while the dimethylamino group (-N(CH₃)₂) acts as a nucleophile to promote the combination of the amine and epoxy groups. This significantly lowers the activation energy, shortening the curing time by 30%-50% (e.g., at 25°C, curing takes 24 hours without accelerator, but only 8-12 hours with DMP-30).

 

Recommended Dosage

1. As Epoxy Curing Agent: When used alone, the dosage for YLE-128 epoxy resin (Epoxy Equivalent Weight 185-195) is approximately 10%. It enables rapid curing at room temperature or low temperatures for coatings, castings, and sealants. For YLE-220 epoxy resin, the dosage is approximately 12.5%. For Epoxy-Liquid Polysulfide systems, the dosage is 10-15% for room temperature curing and 6% for heat curing. It imparts unique bonding, casting, and sealing properties. Typical range: 5-15 PHR.

2. As Epoxy Accelerator: When mixed with other epoxy curing agents, it acts as an accelerator to increase curing rates. Dosage is 0.1%-3% PHR of the main curing agent. Widely used in anti-corrosion coatings, cast floor concrete protection, and adhesives.

3. As Polyurethane Catalyst: It is a catalyst for isocyanate trimerization. It has higher catalytic selectivity for Polyisocyanurate (PIR) reactions compared to PUR, making it suitable for PIR formulations. DMP-30 is a milder activity catalyst; it requires a larger dosage in formulations, resulting in a gentle reaction, stable rise, good flowability, and end products with PIR high-temperature and flame-retardant effects.

 

Advantages

• Highly efficient acceleration (strong low-temperature applicability).
• Improves coating film hardness and chemical resistance.
• Good compatibility with most epoxy resins and curing agents (no phase separation).

 

 

Limitations

• May experience slight yellowing upon long-term UV exposure (due to phenolic hydroxyl oxidation), making it unsuitable for outdoor high-gloss flooring.
• Irritating to skin; potential for trace formaldehyde release. Protective equipment must be worn during application.

Storage & Handling

Avoid excessive heat and humidity. Store in unopened original containers at room temperature, away from fire sources, strong acids, strong bases, and strong oxidizing agents. Shelf life is 12 months from the date of production.

Precautions: Please refer to the Yolatech Product DMP-30 Material Safety Data Sheet (MSDS).

Packaging: 200Kg drum, 1000 IBC.