Light Stabilizers for Coatings

ISBN-13: 9783866301283 / Angielski / Twarda / 2017 / 156 str.

Andreas Valet; Adalbert Braig

Spis treści

1Introduction 112Light and photo-oxidative degradation 132.1Light 132.1.1Photo-physical processes 152.2Photo-chemical degradation processes 163Stabilization options 213.1UV absorbent pigments 223.2UV absorbers 233.2.1UV absorber classes 243.2.2Mode of action of UV absorbers 273.2.2.1Phenolic UV absorbers 283.2.2.2Non-phenolic UV absorbers 303.2.3Examples of UV absorbers 303.3Free-radical scavengers 363.3.1Antioxidants 363.3.2Sterically hindered amines 383.3.2.1Mode of action of HALS 423.4Quenchers 453.5Peroxide decomposing agents 464Stabilization of coatings 494.1Automotive coatings 514.2Light stabilization of automotive coatings 524.2.1Two-coat systems 534.2.2Specific requirements of UV absorbers in coatings 554.2.2.1Solubility and compatibility of UV absorbers 564.2.2.2Volatility of UV absorbers 594.2.2.3Reactable UV absorbers 614.2.2.4Effect of UV absorbers on coating colour 634.2.2.5Unwelcome side reactions 644.2.2.6UV absorbers and photoinitiators 674.2.3Specific requirements on HALS in coatings 714.2.3.1Solubility and compatibility of HALS 714.2.3.2Volatility of HALS 744.2.3.3Reactable HALS 754.2.3.4Effect of HALS on coating colour 764.2.3.5Unwelcome side reactions 774.2.4Weathering results for two-coat systems 794.2.4.1Weathering tests 794.2.4.2Results for solvent-borne clear coats 864.2.4.3Results for water-borne clear coats 974.2.4.4Results for powder clear coats 1004.2.4.5Results for UV-curable clear coats 1034.2.4.6Coatings on plastic substrates 1064.2.4.7UV protection of epoxy-based fibre reinforced plastics 1114.2.4.8Effect of additional basecoat stabilization 1144.2.4.9Exposure results for one-coat finishes 1174.3Light stabilization of industrial coatings 1214.3.1Stabilization of paints for metal substrates 1224.3.2Stabilization of clear wood coatings 1254.4Stability of light stabilizers 1284.4.1Photo-chemical stability of UV absorbers 1284.4.2Long-term stability of HALS 1375Conclusions 1416References 143Authors 151Index 153