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Tuesday, 17 September 2019
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Raw materials & technologies, Raw materials, Coatings binders

Synthesising bio-based polyester resins for waterborne UV coatings

Wednesday, 10 December 2014

In a paper, three bio-based unsaturated polyesters were synthesised from itaconic acid and different diols which could be derived from renewable resources.

Researchers prepared a series of fully bio-based unsaturated polyester resins. Source: Lanxess

Researchers prepared a series of fully bio-based unsaturated polyester resins. Source: Lanxess

Their chemical structures were confirmed by FT-IR, 1H NMR and acid value as well as hydroxyl value. Waterborne UV curable networks based on these polyesters were manufactured and their mechanical properties, thermal stability and coating properties including pencil hardness, flexibility, adhesion, water resistance and solvent resistance were investigated.

Coatings films exhibited good water resistance

Results showed that the UV-cured polyester coatings exhibited high hardness, good water resistance and solvent resistance. The coatings reported in this study combined the merits of bio-based materials, UV-curing process and water distribution.

The study is published in: Progress in Organic Coatings, Volume 78, January 2015, Pages 49-54.

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