SIWIN has over 15 years of expertise in developing and producing oximino silane crosslinkers for the sealant industry, offering innovative products to global markets.

Applications and Advantages of Oximino Silane Crosslinkers:

Oximino silane-based crosslinkers are essential for producing neutral moisture-curing silicone sealants. These compounds crosslink hydroxy-functionalized silicone polymers into silicone elastomers under the effect of a catalyst and moisture.

Neutral Cleavage Products: Unlike acid or alkaline crosslinking systems that release acetic acid or amines, oximino silanes release 2-butanone oxime (MEKO), which reacts neutrally. This makes them ideal for use on sensitive substrates like marble.

Customizable Reactivity:

The reactivity of SIWIN crosslinkers follows the general trend:

SIWI-TOS > SIWIN-VOS > SIWIN-MOS.

By blending different types of crosslinkers, users can precisely adjust formulation properties such as skin-over time, curing rate, and time to first elastic recovery.

Response to the MEKO Ban in the EU:

In light of the upcoming MEKO ban in the EU, SIWIN has developed innovative low-MEKO and no-MEKO crosslinkers based on acetoxime, methyl isobutyl ketoxime (MIBKO), and 2-pentanoneoxime (MPKO).

Product Range:

MIBKO-Based Crosslinkers:

SIWIN-KT106: Methyl MIBKO Silane

SIWIN-KT206: Vinyltris(methylisobutylketoximino)silane

SIWIN-KT006: Tetra(methylisobutylketoximino)silane

Acetoximino-Based Crosslinkers:

SIWIN-KT131: Methyltris(acetoximino)silane

SIWIN-KT231: Vinyltris(acetoximino)silane

MPKO-Based Crosslinkers:

SIWIN-KT105: Methyltris(2-pentanoneoxime)silane

SIWIN-KT205: Vinyltris(2-pentanoneoxime)silane

Key Features:

• Environmentally friendly alternatives to MEKO-based systems.

• Suitable for sensitive substrates and a wide range of sealant formulations.

• Available in blends with customizable ratios to suit specific performance requirements.

SIWIN continues to provide advanced solutions for sealant manufacturers worldwide, ensuring compliance with evolving regulations while delivering exceptional performance.

Mixed Oximino Silanes Recommendations

Siwin-MT9010

Siwin-MT8515

Siwin-MV8020

Siwin-MV6733

Siwin-VT6535

Siwin-VT8020

Siwin-VT5545