Samhwa Paint, Patent for 'Eco-Friendly Polyurethane Composition'

Excellent Physical Properties and Eco-Friendliness in Productization... Green Waterproof Master Jungdo, KSF3211 Type 1

Green Waterproofing Master.
[Photo by Samhwa Paint]

[Asia Economy Reporter Kim Jong-hwa] Samhwa Paint Industrial Co., Ltd. announced on the 24th that it has obtained and disclosed a domestic patent for 'Two Liquid Type Eco-Friendly Polyurethane Composition for Waterproof Complex and Preparation Thereof.'

Polyurethane exhibits excellent mechanical properties such as acid resistance, alkali resistance, oil resistance, abrasion resistance, and tensile strength, and is economical and easy to apply. It is widely used not only as a waterproofing material for buildings but also as an elastic pavement material for sports facilities such as bicycle paths, children's playgrounds, and athletic tracks.

However, existing polyurethane waterproofing methods have structural limitations that weaken the durability of structures, as continuous vibration, contraction, and expansion of the structure cause cracks, leading to damage to the polyurethane coating.

To address these issues and increase resistance to cracking, composite waterproofing construction combining polyurethane waterproofing with sheet waterproofing methods has been applied in various ways, but there has been no composition with suitable physical properties and eco-friendliness for such construction.

Accordingly, Samhwa Paint invented a manufacturing method for a two-liquid polyurethane composition that has excellent mechanical properties applicable to composite waterproofing methods and does not use the four major heavy metals (lead, chromium, mercury, cadmium) or toxic carcinogenic phthalate plasticizers.

A representative from Samhwa Paint stated, "Products made from the polyurethane composition of this invention are classified as Green Waterproof Master Intermediate and KSF3211 Type 1. As demand for eco-friendly waterproofing materials continues to increase, we will lead the eco-friendly paint market through this invention."

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