SP Samhwa Obtains Patent for 'Bio-Based Waterproofing Agent'

Application of Plant-Based Glycerin and Oil-Derived Materials
Meets KS Standards, Secures Cost Competitiveness

SP Samhwa announced on the 16th that it has obtained a patent for a bio-based waterproofing agent.

SP Samhwa CI

The patent acquired by SP Samhwa is for “Two-component polyurea-urethane coating waterproofing composition containing bio-based plasticizer and defoamer, and manufacturing method thereof.” A plasticizer is an additive that imparts flexibility and elasticity to a material, while a defoamer is an additive that suppresses the formation of bubbles.

This patent applies eco-friendly, bio-based technology to polyurea waterproofing membranes, which are widely used for building waterproof coatings. The company utilized a plasticizer derived from plant-based glycerin and a defoamer based on plant oils.

Despite the superior physical properties of pure polyurea products in the waterproofing market, their use has been limited due to the high price of polyetheramine, a key raw material. As an alternative, hybrid products blended with polyol have been used, but during application, fine bubbles remained within the coating, resulting in reduced tensile strength and shortened lifespan.

SP Samhwa combined a special ethylene oxide-based polyol with a plant oil-based defoamer to stably establish a deaeration segment for bubble release. The company succeeded in creating coatings free of bubble defects, while reducing reliance on expensive raw materials.

SP Samhwa has also completed performance verification for the patent. The waterproofing agent met all physical property standards required by the Korean Industrial Standard (KS F 4922), even after more than 30 days of curing at room temperature and under heat treatment conditions.

A representative from SP Samhwa stated, “This patent replaces some expensive raw materials, making our product more price-competitive, and addresses the weaknesses of hybrid waterproofing materials through bio-technology. If applied to places demanding durability, such as rooftops and parking lot floors, it is expected to significantly extend building lifespans and contribute to reducing societal maintenance costs.”

This content was produced with the assistance of AI translation services.