Photo-stabilizing efficiency of N-substituted hindered amines in polypropylene: Effects of processing conditions and exposure to a protonic acid

Chmela, Štefan; Carlsson, D. J.; Wiles, D. M.

doi:10.1016/0141-3910(89)90008-6

Cited by 30 publications

(2 citation statements)

References 7 publications

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“…High polarity of nitroxyl leads to reactivity with protonic acids. 4 Polarity plays a role in the dispersion and, thus, the performance of inorganic screeners such as nano-cerium oxide. 5,6 Depending on the polarity of medium in which particles are to be incorporated, dispersion stability may require surface modification of nanoparticles, otherwise aggregation may occur and this reduces screening efficiency of inorganic UV absorber.…”

Section: Acid/base Interactionmentioning

confidence: 99%

Principles of Stabilizer Selection

2015

Handbook of UV Degradation and Stabilization

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All previous chapters contribute to understanding the principles of stabilizer selection, especially Chapters 3, 4, and 5. In this chapter we would like to review some essential aspects of stabilizer performance which were not sufficiently stressed in the previous chapters, or they were discussed but not their importance for stabilizer selection. One important criterion − economy − is not included here, considering that every good design should consider the economic aspects of materials application, and that chemists can best influence economical selection by careful consideration of technical aspects important for the application.

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Section: Acid/base Interactionmentioning

confidence: 99%

Principles of Stabilizer Selection

2015

Handbook of UV Degradation and Stabilization

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“…Meanwhile, information on the light efficacy of various HALS is available in the literature, whereas information of property–structure relationship on the light efficacy of different NOR compounds is more scare. When ranking the best light stability efficacy in a series of 4‐benzoate‐substituted 2,2‐6,6‐tetramethylpiperidines, the obtained ranking was NOCOCH 3 < NCOCH 3 < NH < NO 14. A recent patent application reveals that certain NOR derivatives are able to protect polypropylene films beyond 5000 h of artificial weathering against polymer degradation 15.…”

Section: Polymer Degradation and Stabilizationmentioning

confidence: 99%

Improving weathering resistance of flame‐retarded polymers

Wilén

Pfaendner

2013

J of Applied Polymer Sci

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Most flame-retarded polymer products need to be highly durable throughout their service lifetime in many demanding applications areas such as construction, transportation, electric equipment, and textiles, where low flammability in combination with high resistance toward oxidative deterioration triggered by the action of light, heat, and/or mechanical stress is a mandatory quality. To achieve this, it is essential to better understand the overall interplay (both physical and chemical processes) between different components such as different flame retardant structures in their respective polymers and in the presence of coadditives such as processing stabilizers, antioxidants, light stabilizers, metal deactivators, filler deactivators, ultraviolet absorbers, and so on, in the flame-retarded polymer product. In this article, the key difficulties in improving weathering resistance of flame-retarded polymers are reviewed.

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Photostabilisation of Polymer Materials

Gijsman

2010

Photochemistry and Photophysics of Polymer Materials

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Photo-stabilizing efficiency of N-substituted hindered amines in polypropylene: Effects of processing conditions and exposure to a protonic acid

Cited by 30 publications

References 7 publications

Principles of Stabilizer Selection

Principles of Stabilizer Selection

Improving weathering resistance of flame‐retarded polymers

Photostabilisation of Polymer Materials

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