Liquid Hardener

Liquid Hardener

Hardener R768
Manufacturing is moving toward sustainability, and the footwear industry is following this trend closely. To develop high-performance, environmentally friendly adhesives, the supporting crosslinking technology must keep up as well. The core role of liquid hardener R768 is to balance reactivity with long-term durability—its curing speed is just right, not disrupting production schedules while ensuring lasting bonding performance in finished shoes.
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Description
Technical Parameters

Guangdong Yrbest High Polymer Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of liquid hardener in China. Welcome to buy durable liquid hardener at competitive price from our factory. If you have any enquiry about quotation and free sample, please feel free to email us.

 

Product Introduction

 

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Manufacturing is moving toward sustainability, and the footwear industry is following this trend closely. To develop high-performance, environmentally friendly adhesives, the supporting crosslinking technology must keep up as well. The core role of liquid hardener R768 is to balance reactivity with long-term durability-its curing speed is just right, not disrupting production schedules while ensuring lasting bonding performance in finished shoes.

 

Most outstanding advantage of R768 is the excellent yellowing resistance. For white or light-colored shoe materials, or high-end fashion footwear with strict color stability requirements, this hardener is a great fit. Even under prolonged sun exposure or harsh conditions, it effectively preserves the material's original color and transparency-no yellowing, no hazing. Beyond appearance, liquid hardener R768 also delivers impressive durability. Its heat resistance is solid, keeping bonded areas stable whether during high-temperature production or when finished shoes are used in hot environments. Its hydrolysis resistance is also strong, so bonds won't easily fail in humid conditions. One thing worth highlighting is R768's exceptional performance against plasticizer migration. When bonding substrates like PVC, which tend to release plasticizers, adding some R768 to the adhesive prevents the bond line from softening or delaminating-resulting in excellent long-term stability.

 

Liquid hardener R768 is specifically developed for water-based shoemaking systems. Adhesives formulated with it have low VOC content and meet various environmental and workplace safety standards. It's a transparent hardener, leaving no trace on light-colored or transparent materials and fully preserving the finished product's appearance. In demanding processes like athletic shoe assembly, sole bonding, and footwear material lamination, Liquid Hardener R768 has become the go-to choice for many manufacturers.

 

Product Parameter

 

Product Model

R768

Appearance

Colorless transparent liquid

Usable time after reaction (23C)

24-36 hours

Storage Period (5~35°C)

6 months

 

Product Feature and Application

 

Product Features:

Resistance to high temperatures

Hydrolysis resistance

Plasticizer migration resistance

Solvent resistance

Industrial Adhesives for:

Footwear Industry
Automotive Industry
Packaging Industry

Processing Procedur:

Clean and dry the materials.

Roughen the surface if necessary.

Apply a thin coat of adhesive.

Allow 30 minutes for drying and solvent evaporation.

Heat to activate the surface.

Align and shape, then press together for 12 seconds.

The bond begins to stabilize about one minute after assembly.

 

Precautions

 

 
 

 

Conduct a prior test before full-scale application.

 
 

 

Keep this chemical product away from children, fire, and moisture.

 
 

 

Store in a cool and dry place (5-35°C).

 
 

 

For more information, please read Material Safety Data Sheet.

 

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