Diallyl phthalate

Diallyl Phthalate (DAP)

CAS 131-17-9 | High-Performance Reactive Crosslinking Monomer and Prepolymer Precursor

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🔬I. Core Chemical Properties: Unique Molecular Structure Determines Exceptional Performance

Molecular Formula: C₁₄H₁₄O₄

Structural Key Features:

Dual Active Sites: Each molecular end contains a highly reactive allyl group (-CH₂-CH=CH₂)

Rigid Benzene Ring Core: Provides structural rigidity and thermal stability

Ester Linkage: Ensures excellent compatibility with diverse resin systems

Reaction Mechanism:

Prepolymerization Stage: Under peroxide initiation, allyl groups undergo radical polymerization to form soluble/meltable linear prepolymers (Stage B resin)

Curing Crosslinking Stage: Further heating causes residual double bonds in the prepolymer to react, forming a non-melting, non-soluble three-dimensional thermosetting network structure

Curing Characteristics: Addition polymerization with no release of low-molecular-weight byproducts; extremely low curing shrinkage (<3%)

💡II. Functional Segmentation: Four Key Application Forms

Reactive Monomers

Function: Acts as a copolymerization or crosslinking modifier

Characteristics: Directly participates in polymerization, introducing rigid benzene rings and crosslinking points

Prepolymers (B-stage Resins)

Function: Serves as the primary resin matrix

Characteristics: Partially polymerized, excellent solubility, facilitates impregnation and coating, undergoes final heat curing for shaping

Molding Compounds and Composite Matrix

Function: Blended with fillers (glass fiber, minerals, etc.) to prepare molding compounds

Characteristics: Excellent impregnation capability and post-curing mechanical properties

Modifying Additives

Function: Enhance properties of other resins (e.g., unsaturated polyester, epoxy)

Characteristics: Improve heat resistance, reduce shrinkage, increase hardness

📌III.Packaging, Storage, and Transportation: Professional Assurance, Safe Delivery

Product Form: Clear to slightly yellow liquid

Standard Packaging: 200kg/galvanized iron drum or 1000kg/plastic drum

Storage Conditions: Cool, dry, well-ventilated area; avoid direct sunlight

Keep away from heat sources and open flames

Recommended Storage Temperature: <25°C

Shelf Life: 12 months from production date in original sealed container

Transportation Labeling: Non-hazardous material (per general chemical transport regulations)

Recommended Labels: “Protect from light,” “Keep dry”

Transportation Requirements: Prevent exposure to direct sunlight and rain

Keep containers sealed and upright

Transport separately from oxidizers, strong acids, and strong alkalis

Safety Operations: Wear safety goggles and gloves during handling

Ensure adequate ventilation in work areas

In case of leakage, absorb with inert absorbent material

📊 ⭐ Why Choose Us

• Reliable supply for research and commercial quantities

• Strict quality control and batch consistency

• Experience with export compliance and documentation

• Support for custom synthesis and technical consultation

📩 Contact Information

For pricing, samples, technical data, or customized specifications, please contact:

●Product Manager:Lucy Yao

Email:  lucy@coreychem.com