Abstract
Coalescents are compounds with a high potential for generating tropospheric ozone, which causes adverse effects on humans and their surroundings. This study designed a coalescent for decorative paints that reached technical levels equivalent to those obtained by StC, a product on the market, but with better environmental and economic performance. The strategy adopted in creating the green coalescent (GrC) improved film formation and reduced the product’s atmospheric emission rate. Regarding the environmental performance, GrC outperformed StC in terms of water consumption, global warming potential, and human toxicity by 30%, 35%, and 91%, but had a high smog formation potential even with a reduced loss to the air. The redesign of the molecule gave rise to AGrC, which achieved a more homogeneous environmental performance. The results of an economic analysis indicated that the procedures adopted to reduce environmental impacts could also make the coalescent more competitive if the lowest market prices were practiced. On the other hand, if the products are sold at high prices, the paint industry tends to privilege the economic dimension and disregard environmental performance for decision purposes. This research succeeded in reconciling technical functions and aspects related to sustainability to design more competitive products in the Brazilian market.
Highlights
Coalescents are solvent-class products routinely incorporated in water-based paint formulations containing polymeric emulsions as binders to improve their application [1]
This study aimed to design a coalescent for decorative paints that would reach tech6
This study aimed to design a coalescent for decorative paints that would reach techenvironmental and economic performance
Summary
Coalescents are solvent-class products routinely incorporated in water-based paint formulations containing polymeric emulsions as binders to improve their application [1]. In 2020, the global coalescent market collected around 690 M USD in revenues from the production of 383 kt of products, with 72% of this total destined for architectural paint production. These intermediates are used in the preparation of automotive paints, wood coatings, traffic markers and other covering agents. The Brazilian chemical sector gathered 14.0 M USD from the manufacturing of 7.5 kt of coalescents, placing the country among the fifteen largest producers of these assets on the global scale. Projections indicate that the Brazilian market will experience a 5.2% volume expansion by 2025, which would increase revenues by 4.0% [4]
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