NatureShield^®

Overview

NatureShield® additives for wood & concrete surface coatings are designed to improve the durability, weatherability, and aesthetics of wood and stone-based substrates. These environmentally-friendly additives impart abrasion, scratch, & water resistance, provide good water beading, and enhance the natural pattern of wood. All NatureShield® products contain at least 50% naturally-derived solids content per ASTM D6866 testing and are certified under the USDA BioPreferred Program.

Bio-based surface modifiers demonstrate comparable or enhanced abrasion resistance, improved scratch resistance, and superior matting when used as an alternative to synthetic surface modifiers in high-quality coatings.

How We Tested

NatureShield® products were evaluated with a series of acrylic, acrylic PUD, acrylic hybrid PUD, and PUD binders in clear coat systems for Taber abrasion (CS17/1000g/1000 U), fingernail scratch resistance, and matting/gloss. The binders used were selected based on their intended application usage. Emulsions were incorporated at 1.75% of solids, and dispersions were incorporated at 2.5% of solids. The data presented is intended as a guide to indicate performance. Final properties will vary by resin and final formulation.

Abrasion Resistance

• Performance is highly dependent on the choice of binder.
• Dispersions provide better abrasion resistance versus emulsions.
• NatureShield® 50 shows superior results to Synthetic Modifier 3 in all systems.

• NatureShield® 80 improves abrasion resistance and provides performance similar to Synthetic Modifier 1 with acrylic binders.
• Both NatureShield® 60 and 70 provide good abrasion resistance in some acrylic systems.

• NatureShield® 60 displays a similar abrasion resistance to Synthetic Modifier 1 in the Acrylic PUD system.
• All modifiers provide good abrasion resistance in the Hybrid Acrylic PUD system, with NatureShield® 80 providing the best overall performance.

Scratch Resistance

• All bio-based modifiers demonstrate similar or better performance in all systems compared to synthetic modifiers.
• NatureShield® 50 shows superior scratch resistance compared to Synthetic Modifier 3 in all systems.

• All three NatureShield® products showcase similar scratch resistance performance in the Acrylic 1 binder system.
• NatureShield® 60 and 70 provide the best scratch resistance in the Acrylic 2 binder system.
• NatureShield® 80 improves scratch resistance vs. the synthetic modifiers in the Acrylic 2 binder system.

• NatureShield® 70 performs best in the Hybrid Acrylic PUD system.
• NatureShield® 70 and 80 provide the best scratch resistance in the Acrylic PUD system.

Matting/Gloss

• The larger particle size of dispersions provides better matting performance than emulsions.
• NatureShield® 50 illustrates similarly efficient matting compared to Synthetic Modifier 3 at Gloss 60°.
• NatureShield® 50 demonstrates superior matting compared to Synthetic Modifier 3 at Gloss 85°.

NatureShield® Grades

NatureShield® surface modifiers allow formulators to develop coatings with an increased amount of bio-sourced materials without jeopardizing the quality of their coatings. Our technology comprises significant levels of sustainable materials providing performance properties that meet or exceed the standard set by synthetic products in the marketplace.