Pathways targeting solvent-free PUR coatings

Renz, H.; Bruchmann, Bernd

doi:10.1016/s0300-9440(01)00239-9

Cited by 17 publications

(14 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the development of high solid polyurethane coatings, as for epoxy coatings, the adopted approach is to lower the binder of the resin, add diluents or lower the viscosity of the polyisocyanate crosslinking agent [84,111,116,117]. Renz et al [118] described the effect of these modifications and their possible negative effects. Hydroxy-terminated polyester and hydroxy-functional acrylic resins are the most common polyols used in the formulation of high solid polyurethane coatings [84,116].…”

Section: High Solid Polyurethane Coatingsmentioning

confidence: 99%

Powder and High-Solid Coatings as Anticorrosive Solutions for Marine and Offshore Applications? A Review

Pélissier

Thierry

2020

Coatings

View full text Add to dashboard Cite

The constant change in coating technology and environmental regulations has led to the development of low-solvent to solvent-free organic coatings, such as powder and high-solid coatings. These two technologies are well developed, but are still not the preferred choice when considering anticorrosive coating for marine and offshore applications. This mostly arise from a lack of perspective in their long-term behavior and from the difficulty in their applications. This review’s principal aim is to describe powder and high-solid technologies from their formulation and application to their use in marine and offshore applications while recalling and giving key notions needed when the field of anticorrosive coatings is considered. First, the requirement for coatings to be called anticorrosive will be given alongside with their protection and failure mechanisms. The formulation and application for high-solid and powder coatings will be exposed followed by the description of the type of coating chemistry used in harsh environment. Finally, high-solid and powder coatings behavior in these types of environment will be discussed.

show abstract

Section: High Solid Polyurethane Coatingsmentioning

confidence: 99%

Powder and High-Solid Coatings as Anticorrosive Solutions for Marine and Offshore Applications? A Review

Pélissier

Thierry

2020

Coatings

View full text Add to dashboard Cite

show abstract

“…All products were isolated in >99% purity with the exception of the sample with n = 4 and R = NCO (>98%), as confirmed by 700-MHz 1 H NMR and 13 C NMR spectroscopies and GPC, in most cases limited only by the detection level of the equipment (data not shown). Because of the strong emphasis on purity, no yields were determined.…”

Section: Synthesis Of Isocyanuratesmentioning

confidence: 73%

“…The combined resin-fraction was then distilled in a thin-film shortpath evaporator at 220°C and <10 À7 mbar, collecting the distillate as a very slightly greenish transparent viscous oil. The distillate was evaporated using a thin-film short-path evaporator at 160°C and <10 À7 mbar, collecting the pure product as resin as a very slightly greenish transparent viscous oil, characterized by (numbers for HDI-trimer) 1 H-NMR (700 MHz, C 6 D 6 ): δ = 3.78 (2H, t), 2.54 (2H, t), 1.53 (2H, quin), and 1.03-0.92 (6H, m) ppm; 13 …”

Section: Synthesis Of Functional Isocyanuratesmentioning

confidence: 99%

“…Consequently, the search for low-viscosity high-functionality (≥3) aliphatic isocyanates has been a topic of continuous interest for the past decades. [11][12][13] Surprisingly however, very little is known about the fundamental causes of the increase of viscosity in such systems, and the underlying chemistry is hardly understood. Although surprisingly high viscosity values have been observed and reported for aliphatic isocyanurates (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…Although surprisingly high viscosity values have been observed and reported for aliphatic isocyanurates (e.g. 1000-3000 mPa·s at room temperature for industrial HDI-based isocyanurates, compared with 2 mPa·s for monomeric HDI [13,14] ), a chemical explanation for the cause of such high values has not yet been presented. Combining the need for a better understanding of the physical behavior of these precursors with a further investigation of the polyisocyanurate networks made from them, we set out with three main objectives:…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Aliphatic isocyanurates and polyisocyanurate networks

Driest

Lenzi

Marques

et al. 2016

Polymers for Advanced Techs

View full text Add to dashboard Cite

The production, processing, and application of aliphatic isocyanate (NCO)-based thermosets such as polyurethane coatings and adhesives are generally limited by the surprisingly high viscosity of tri-functionality and higherfunctionality isocyanurates. These compounds are essential crosslinking additives for network formation. However, the mechanism by which these high viscosities are caused is not yet understood. In this work, model aliphatic isocyanurates were synthesized and isolated in high purity (>99%), and their viscosities were accurately determined. It was shown that the presence of the NCO group has a strong influence on the viscosity of the system. From density functional theory calculations, a novel and significant bimolecular binding potential of À8.7 kJ/mol was identified between NCO groups and isocyanurate rings, confirming the important role of the NCO group. This NCO-to-ring interaction was proposed to be the root cause for the high viscosities observed for NCO-functional isocyanurate systems. Molecular dynamics simulations carried out to further confirm this influence also suggest that the NCO-toring interaction causes a significant additional contribution to viscosity. Finally, model functional isocyanurates were further reacted into densely crosslinked polyisocyanurate networks which showed interesting material properties.

show abstract

Polymeric Engineering for Automotive Coating Applications

Rink¹

2008

Automotive Paints and Coatings

View full text Add to dashboard Cite

Pathways targeting solvent-free PUR coatings

Cited by 17 publications

References 6 publications

Powder and High-Solid Coatings as Anticorrosive Solutions for Marine and Offshore Applications? A Review

Powder and High-Solid Coatings as Anticorrosive Solutions for Marine and Offshore Applications? A Review

Aliphatic isocyanurates and polyisocyanurate networks

Polymeric Engineering for Automotive Coating Applications

Contact Info

Product

Resources

About