latent hardener for PU sealant

The latent hardener for PU sealant is tailored for high-end polyurethane sealant applications that require stable storage and controlled curing. It activates only under heat or specific conditions, providing longer pot life and flexible processing for industrial users. As a reliable PU additive manufacturer, we offer latent curing agents that enhance sealing strength, elasticity, and chemical resistance after activation. The latent hardener for PU sealant ensures uniform crosslinking, preventing bubbling and surface tack, and delivers consistent performance in automotive, construction, and electronic sealing.
WCAT-WS12A
WCAT-WS12A

Eco-friendly Catalyst for Silicon PU Stadium Pavement

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AUCAT-RM301
AUCAT-RM301

Anti-hydrolysis Polyurethane Thermal Sensitive Catalyst

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CUCAT-V17/V18
CUCAT-V17/V18

Non-foaming Catalyst for low TVOC PU plastic runway resin

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WCAT Series of PU Catalysts
WCAT Series of PU Catalysts

Eco-friendly Moisture-cured Polyurethane Catalyst

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AUCAT-101
AUCAT-101

Tin Free Anti-hydrolysis PU Catalyst for Polyurethane Paint

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CUCAT-PDAA
CUCAT-PDAA

PU Catalyst for polyurethane elastomers

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WCAT-WS2
WCAT-WS2

Moisture-cured Polyurethane Catalyst substitute for DBTDL T12

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CUCAT-HST
CUCAT-HST

Polyurethane Catalyst for two-component polyurethane system

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BX Series of PU Catalyst
BX Series of PU Catalyst

Organic Bismuth-zinc Composite Catalysts

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Tin Catalyst TCAT-NS01
Tin Catalyst TCAT-NS01

high efficiency chelated tin catalyst

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Polyurethane Catalyst CUCAT-FS01
Polyurethane Catalyst CUCAT-FS01

PU Catalyst for two-component waterproof coating

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ZCAT Series of PU Catalyst
ZCAT Series of PU Catalyst

Organic Zinc Polyurethane Metal Catalysts

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latent hardener for PU sealant

The latent hardener for PU sealant functions as a temperature-activated curing component that reacts with polyurethane prepolymers during heat treatment. It provides precise control over curing kinetics and ensures full mechanical development after activation. This additive minimizes premature reaction, extending formulation shelf life. The latent hardener for PU sealant improves elasticity, tear strength, and resistance to chemicals and moisture, making it ideal for long-lasting PU sealing systems.

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