Discoloration mechanism of UV-curable polymer/metal hybrid coating

Kim, Mun Ho; Lee, Jong-Bae; Choi, Kil‐Yeong

doi:10.1016/j.jiec.2012.08.014

Cited by 7 publications

(3 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The product 1 [5], 2a and 2b [6] are obtained according to the references. Product 1 (4.005 g, 22.13 mmol) concentrated sulfuric acid (2.0 mL) and product 2a (12.676 g, 48.17 mmol) were added in a 100 mL three-necked flask with a reflux condensation at 100~110 oC for 5 h in an oil bath by the protection of N2.…”

Section: Experiments 21 Synthesis Of Product 3amentioning

confidence: 99%

The synthesis of novel chromotropic dyes with surface activity and a regulable color transition point derived from phenolsul-fonphthalein

Shan

sun²,

liu³

et al. 2023

Fourth International Conference on Optoelectronic Science and Materials (ICOSM 2022)

View full text Add to dashboard Cite

Three novel compounds called 3',3"-dodecyl-2-sulfonyl phthalein (DSP), 3', 3"-myristyl-2-sulfonyl phthalein (MSP) and 3',3"-dodecyl-5',5''-nitro-2-sulfonyl phthalein (DNSP) were synthesized to play as functional dyes in both chemical and biological areas. The as-synthesized chromotropic dyes were characterized by NMR, elemental analysis and pH value tester also the allochroic behaviors and surface activity of the new compounds were tested and performed in details mainly with the optical contact angle measurement and UV-Vis spectrophotometer. The introduction of the long chain alkyl groups into the skeleton is aiming to increase the surface activity of those dyes while that of the nitro group was focused on the regulation of the color transition point (CTP). The results indicated that the target dyes showed satisfying properties in not only the chromogenic performance but also the surface activity. Therefore, it may be an effective and durable functional dye with further potential applications in the field of pH sensors, probe and coating materials.

show abstract

Section: Experiments 21 Synthesis Of Product 3amentioning

confidence: 99%

The synthesis of novel chromotropic dyes with surface activity and a regulable color transition point derived from phenolsul-fonphthalein

Shan

sun²,

liu³

et al. 2023

Fourth International Conference on Optoelectronic Science and Materials (ICOSM 2022)

View full text Add to dashboard Cite

show abstract

“…Other types of unimolecular photoinitiators are those that can form biradicals through intramolecular hydrogen abstraction (Norrish Type II). This occurs in molecules with a hydrogen atom in the α-position, able to undergo an intramolecular [ 1 , 5 ]-hydrogen shift. The resulting ketyl radical will most likely terminate by coupling with another free radical species, while the other radical will initiate polymerization [ 43 , 46 ].…”

Section: Constituents Of a Free Radical Uv Curing Systemmentioning

confidence: 99%

“…Putties, primers and clear coats are products designed for the refinish coatings market [ 1 ], with the purpose of protecting and decorating the bodywork ( Figure 1 ), with special interest in the automotive market [ 2 ]. Putties are applied over the metal surfaces with the purpose of filling scratches.…”

Section: Introductionmentioning

confidence: 99%

Free-Radical Photopolymerization for Curing Products for Refinish Coatings Market

Ribas-Massonis

Cicujano²,

Duran

et al. 2022

Polymers

View full text Add to dashboard Cite

Even though there are many photocurable compositions that are cured by cationic photopolymerization mechanisms, UV curing generally consists of the formation of cross-linking covalent bonds between a resin and monomers via a photoinitiated free radical polymerization reaction, obtaining a three-dimensional polymer network. One of its many applications is in the refinish coatings market, where putties, primers and clear coats can be cured faster and more efficiently than with traditional curing. All these products contain the same essential components, which are resin, monomers and photoinitiators, the latter being the source of free radicals. They may also include additives used to achieve a certain consistency, but always taking into account the avoidance of damage to the UV curing—for example, by removing light from the innermost layers. Surface curing also has its challenges since it can be easily inhibited by oxygen, although this can be solved by adding scavengers such as amines or thiols, able to react with the otherwise inactive peroxy radicals and continue the propagation of the polymerization reaction. In this review article, we cover a broad analysis from the organic point of view to the industrial applications of this line of research, with a wide current and future range of uses.

show abstract