Coating use
Coating materials

1-component Polyurethane Resins

Overview

There are various types of 1-component polyurethane resins, including moisture curing types which harden when they react with the moisture in the atmosphere, block types which harden when heated, and lacquer types which form a film when the solvent or water evaporates.

Moisture Curing type

These resins are urethane prepolymers with residual terminal NCO groups that are cured by reacting with water in the atmosphere. We exploit differences in hardening and drying characteristics to make various types of resin available. For “greener” applications, we also offer non-toluene, non-xylene types.

Block type

Block type isocyanates are structured so that the polyisocyanates' isocyanate groups are masked by blockers to allow the creation of a 1-component type through blending with polyol ingredients that possess active hydrogen (the base). They do not react at normal temperatures and can be stored for a long time. However, when heated to the temperature at which the blockers dissociate (normally 140~200℃), the active isocyanate groups are regenerated, reacting with the polyol ingredients to form a strong film. Yellowing and non-yellowing types are available according to the type of isocyanate. Water-dispersed block types are also available, allowing their use as curing agents for water-based resins.

Lacquer type

Lacquer type products are high polymer urethane solutions that make it possible to obtain strong films by simply allowing the solvent to evaporate. The offer fast drying and excellent weather and abrasion resistance. Customers can select from different degrees of hardness.

Water-dispersed type

Demand for safer water-based resins is rising against the background of social conditions that have focused increasingly on the issues of pollution and the environment in recent years. Since the attainment of various functions has allowed the flexible adaptation of water-based polyurethane resins to diversifying performance requirements, resins with specific individual structural characteristics are now extensively used in the paint and coating materials, adhesives, binders, resin modifiers, greige goods and textile processing sectors.

1-component Polyurethane Dispersion

Because the Takelac W Series of water-based polyurethane resins have been created by dispersing urethane elastomer in water, they are non-hazardous materials and pose no concerns in the area of environmental pollution and fire caused by ignition. Based on the emulsification method used, they can be classified into self-emulsifying and forced emulsifying types, then sub-classified into anionic and nonionic types according to the types of hydrophilic groups adopted. Various grades with different degrees of hardness and adhesion are available.

1-component Self-crosslinking Polyurethane Dispersion

The Takelac WS Series of self-crosslinking water-based urethane resins use water evaporation to form crosslinked structures that create films with excellent water resistance and physical properties. Various grades with different degrees of hardness are available.