Fast-drying, high-elasticity, low-temperature curing sealing hardener meets high-performance ink requirements
In today's rapid development of fields such as automotive electronics, flexible displays, photovoltaics, smart packaging, and wearable devices, ink plays a crucial role. It is not only the carrier of pattern colors.Performance, especially adhesion, flexibility, drying speedIt can also directly affect the quality of the final product.
As the ink industry accelerates its transformation towards high performance and differentiation, the market has put forward higher performance requirements for ink.HDI-based polyisocyanateDue to its excellentYellowing resistance, weather resistanceIt has become an important choice for the development of high-performance ink formulations.
Asahi Kasei's HDI (hexamethylene diisocyanate) non-yellowing polyisocyanate product—Duranate™—can help meet the needs of high-performance inks. Quick-drying, flexibility, low-temperature curing, and other differentiated requirementsproducts.
Part.1
Rapid curing, enhance ink adhesion
Asahi Kasei Tenac™ Meet the rapid curing requirements of high-performance inks.While accelerating the drying rate of the coating film, it also helps to achieve a higher crosslinking density, contributing to a good appearance and weather resistance of the coating film, thereby enhancing the adhesion, chemical resistance, and other properties of the ink.
Quick-drying MHG can achieve drying in just 4 hours.While the standard model takes 7 hours to achieve drying.
The above image demonstrates the method of testing drying speed using a cotton ball pressing technique. After a coating film is formed and placed for a period of time, a cotton ball is pressed onto it. The extent of cotton residue left after removal is then observed to assess the drying speed.
Part.2
High elasticity, suitable for substrates requiring high adhesion.
The adhesion of ink to glossy surfaces such as glass and metal, as well as flexible materials like plastic, requires high standards.If the adhesion to the substrate is insufficient, cracking is likely to occur.This affects the quality.
Donar® elastic HDI polyisocyanate product, without the need for additional flexible resins or plasticizers.Typically imparts high elongation and flexibility to the coating film.Enhance adhesion on various substrates.
Low temperature curing blocked Mondur™
Part.3
Low-temperature curing facilitates flexible formulation design.
For a single-component ink system,How to achieve effective curing at lower baking temperaturesIt is a development direction that is widely focused on by the industry.
The low-temperature curing blocked Mornic™ product can be used as a crosslinking agent in a one-component ink system, helping to enhance reactive performance and improve film-forming properties.SBN-70D can cure at 110° conditions.As shown in the figure below, Asahi Kasei also offers a series of products with lower unsealing temperatures.
Particularly, the low-temperature activation of water-dispersed Multi-Nydd™ products has been achieved.The upgrade of a single-component baking system from solvent-based to water-based.Under appropriate conditions,It can achieve a curing reaction at approximately 90°.This allows customers to flexibly design formulations and choose baking process conditions.
Asahi Kasei Duranate™
====== HDI series polyisocyanate Duranate™ can provide customized solutions to meet the needs of customers in different market segments.Fast-drying, low-viscosity, water-dispersible, elastic, low-temperature curing, etc.Various high-performance products help meet the formulation development requirements in different application areas.
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