An innovative approach to the development of 100% solid organosilane-based oligomers opens up new possibilities for hydrophobic hybrid topcoats. These offer improved water resistance and corrosion protection through versatile curing methods.

New hybrid coatings based on bio-renewable materials offer improved hydrophobicity and corrosion resistance, with various curing techniques. Source: APHOTOSTUDIO - adobe.stock.com

A study is underway to develop 100% solid organic-inorganic hybrid (OIH) coatings that are VOC-free and partially based on bio-renewable materials. The research focuses on the synthesis of multifunctional silane precursors from renewable sources that can be successfully used in coatings to achieve enhanced hydrophobicity and a robust siloxane network. These coatings, derived from both bio-based and petroleum-based sources, provide exceptional curing capability that includes UV, thermal and room temperature cures.

Durability and sustainability of OIH coatings

The coated materials show outstanding resistance to water permeability and corrosion. In particular, UV- and thermally cured coatings have been found to have exceptional durability, while room-temperature and double-cured coatings have achieved very good flexibility and hardness, albeit with slightly higher susceptibility to corrosive environmental influences.

These versatile OIH coatings could prove to be a sustainable solution for a wide range of applications, from interior wood coatings to exterior coatings and clear coats. The use of bio-resources could represent a significant step towards sustainability in various industries, including automotive and construction.

source：european-coatings