Other Chemicals
MOCA
MOCA (4,4′-Methylenebis(2-chloroaniline)): High-Performance Polyurethane Curing Agent
MOCA (4,4′-Methylenebis(2-chloroaniline), (CAS# 101-14-4) is a highly effective aromatic diamine primarily used in the polyurethane industry as a chain extender and curing agent. For over 50 years, MOCA has been instrumental in the manufacturing of high-performance, castable polyurethane elastomers known for their superior physical properties and durability.
Key Performance Advantages
Superior Mechanical Strength
Outstanding Abrasion and Wear Resistance
High Hardness and Toughness
Precise Curing Control
Excellent Thermal Stability
Primary Applications
Industrial Rollers and Wheels
Mining and Material Handling
Automotive and Machinery
Specialty Cast Products
Pigment Paste
A Pigment Paste for CAST-PU (cast polyurethane), Polyurea, 2K PU (two-component polyurethane), and Composite applications is a highly concentrated, pre-dispersed colorant system used to impart durable, consistent colour to a wide range of polymer-based materials.
Performance Benefits
Excellent Color Consistency: Provides reproducible color batch-to-batch due to controlled pigment concentration and dispersion.
UV Stability: Often formulated with weather-resistant and lightfast pigments suitable for exterior applications, minimizing fading or chalking over time.
Chemical Resistance: Maintains color integrity when exposed to common chemicals, solvents, and environmental stressors, which is crucial for high-performance coatings.
Ease of Incorporation: The liquid/paste form allows for easy, dust-free metering and mixing into the base components (Polyol/Isocyanate or Resin/Hardener) prior to curing.
Minimal Impact on Cure: The carrier and pigment are selected to ensure they do not interfere with the intended reaction stoichiometry or the final physical properties (hardness, flexibility, cure time) of the polymer system.
Applications and Compatibility
These pastes are specifically formulated to be chemically compatible and reactive (where necessary) with the curative and base components of several high-performance coating and casting systems:
CAST-PU (Cast Polyurethane): Used for solid casting applications like rollers, wheels, gaskets, seals, and decorative parts. The paste ensures full-depth color.
Polyurea: Essential for fast-curing, robust protective coatings used in industrial, automotive, and construction sectors (e.g., truck bed liners, roofing, bridges). The paste must mix quickly and remain stable during the rapid reaction.
2K PU (Two-Component Polyurethane): Utilized in durable topcoats, sealants, and foams where long-term UV stability and chemical resistance are required (e.g., aerospace, marine, automotive refinish).
Composite Applications: Used to color resins (Polyester, Vinyl Ester, Epoxy) in processes like pultrusion, resin transfer molding (RTM), and hand lay-up for manufacturing fiberglass or carbon fiber reinforced parts, providing a gel coat or in-mold color.
Mould Release Agent for CAST – Polyurethane
A solvent-based mould release agent for CAST – Polyurethane (CAST – PU) is a specialized chemical formulation designed to facilitate the easy, clean, and fast demolding of CAST – Polyurethane parts.
Key Characteristics & Function:
Easy to apply
Fast air cure
No migration
Improved part appearance
Reduced rejection
Non-staining
- No build-up
Application:
Polyurethane Parts
Urethane Foam
Close Cell
Integral Skins
Urethane Elastomers
Epoxy
Internal Mould Release (IMR) Agent for Pultrusion
Our high-performance Internal Mould Release Agents are specifically engineered for the continuous pultrusion process. Unlike traditional external sprays, these additives are integrated directly into the resin matrix (Polyester, Vinyl Ester, Epoxy, or Polyurethane), ensuring a seamless release from the heated die while maintaining superior surface finish and structural integrity.
Key Benefits
Reduced Pulling Force: Drastically lowers the friction between the curing composite and the die wall, allowing for higher line speeds and reduced wear on pulling machinery.
Superior Surface Quality: Eliminates surface defects, pinholes, and “chatter marks,” producing a smooth, high-gloss, or matte finish as required.
Extended Die Life: Minimizes resin buildup (scaling) inside the die, reducing downtime for cleaning and maintenance.
Secondary Bonding Compatibility: Formulated to bloom efficiently to the surface during curing without interfering with post-processing tasks like painting, coating, or adhesive bonding.
Enhanced Wet-out: Acts as a processing aid to improve fiber wet-out and resin flow, especially in complex profiles or high-filler formulations.
Applications
Designed for the manufacturing of high-strength pultruded profiles, including:
Infrastructure: Rebar, bridge components, and grating.
Telecommunications: Fiber optic cable strength members.
Electrical: Insulator rods, cable trays, and ladder rails.
Consumer Goods: Tool handles, window profiles, and sporting goods.
Mould Release Agent for Composite (Hand Lay-up, Moulding & Infusion)
Our High-Performance Mould Release Agent is a specialized semi-permanent solution engineered for the rigorous demands of modern composite manufacturing. Designed for versatility, it provides a superior non-stick barrier for Hand Lay-up, Compression Moulding, and Vacuum Infusion processes.
By creating a cross-linked, chemically resistant film on the tool surface, this agent ensures the effortless separation of parts while preserving the integrity of both the mould and the finished laminate.
Key Characteristics & Function:
- Semi-Permanent Technology: Unlike traditional waxes, a single application allows for multiple de-moulding cycles, drastically reducing prep time between parts.
- High Thermal Stability: Formulated to withstand exothermic heat peaks and elevated oven/autoclave temperatures (up to 250°C) without film degradation.
- Non-Transferring: The agent chemically bonds to the tool, ensuring no residue transfers to the composite part. This allows for immediate painting or secondary bonding without intensive solvent cleaning.
- Low Build-Up: The micro-thin film prevents the accumulation of “waxy” residue, preserving the sharp details and tight tolerances of the original mould.
- Universal Compatibility: Optimized for use with Epoxy, Polyester, and Vinyl Ester resin systems.
Application:
- Hand Lay-up: Provides a consistent slip for easy de-moulding of large parts like boat hulls or automotive panels.
- Resin Infusion (RTM/VIP): Withstands the high vacuum pressures and chemical “scrubbing” action of flowing resin without breaking down.
- Compression Moulding: Thermally stable for processes involving elevated temperatures and rapid cycle times.
