Synthesis and application of UV stabilizers for polymeric materials based on triazinylaminobenzotriazole

Konstantinova, T.; Bogdanova, A. V.; Stanimirov, Stanislav; Konstantinov, Hr.

doi:10.1016/0141-3910(94)90068-x

Cited by 24 publications

(10 citation statements)

References 11 publications

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“…In our previous papers, we have reported the synthesis of some polymerizable triazinylaminobenzotriazole derivatives, containing an allyloxy group in their molecule and their copolymerization with styrene and MMA [7,8]. We decided to synthesize another two polymerizable triazinylaminobenzotriazole derivatives containing allylamine and diallylamine groups, which enable us to compare more precisely their behavior and the most suitable compound to be chosen.…”

Section: Synthesis Of Polymerizable Triazinylaminobenzotriazole Derivmentioning

confidence: 98%

Synthesis of some polymerizable triazinylaminobenzotriazole stabilizers and benzanthrone dyes containing a stabilizer fragment

Konstantinova

Lazarova

2007

Dyes and Pigments

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Section: Synthesis Of Polymerizable Triazinylaminobenzotriazole Derivmentioning

confidence: 98%

Synthesis of some polymerizable triazinylaminobenzotriazole stabilizers and benzanthrone dyes containing a stabilizer fragment

Konstantinova

Lazarova

2007

Dyes and Pigments

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“…In earlier papers, the synthesis of some polymerizable triazinylaminobenzotriazole (TABT) derivatives, their copolymerization with styrene and their influence on some of the properties of copolymers thus obtained were reported 4,5) . A lack of information on the synthesis of polymerizable triazinyl-2,2,6,6-tetramethylpiperidine (TTMP) derivatives and our experience on the synthesis of dyes and stabilizers under phase transfer catalysis conditions 4,6) provoked our interest.…”

Section: Introductionmentioning

confidence: 99%

“…A lack of information on the synthesis of polymerizable triazinyl-2,2,6,6-tetramethylpiperidine (TTMP) derivatives and our experience on the synthesis of dyes and stabilizers under phase transfer catalysis conditions 4,6) provoked our interest. Thus, the object of the present study was to synthesize polymerizable TTMP derivatives and to investigate their copolymerization with styrene and their influence on the properties of the polymers.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of triazinyl-2,2,6,6-tetramethyl-piperidine derivatives as stabilizers for polymeric materials

Bojinov

Konstantinova²,

Konstantinov

1998

Angew. Makromol. Chem.

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Two new unsaturated compounds, i. e. triazinyl‐2,2,6,6‐tetramethylpiperidine derivatives (TTMP), were synthesized under conditions of phase‐transfer catalysis and their copolymers with styrene (St) were prepared. The participation of TTMP in the polymerization did not affect the rate of copolymerization, molecular weight and polydispersity of the St polymers. At low concentrations (0.1 wt.‐%) a significant stabilizing effect against photodegradation was determined.

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“…The main drawback of this approximation is the short term durability of the shielding effect as a result of the photodegradation of either host, guest, or both, caused by the absorption of the same radiation from which protection is sought after. [11][12][13] Approaches based on fl exible inorganic nano structured multilayers that effi ciently refl ect radiation in an arbitrary spectral range as a result of interference effects, rather than by absorption, present a promising alternative route worth to be explored. [14][15][16][17] Unfortunately, a similar approach based on the alternation of polymeric fi lms exclusively is not feasible since the refractive index contrast typically achieved is so small that a large number of layers is required to reach a signifi cant refl ectance, and only in a narrow spectral range.…”

Section: Doi: 101002/adom201500209mentioning

confidence: 99%

Adaptable Ultraviolet Reflecting Polymeric Multilayer Coatings of High Refractive Index Contrast

Smirnov

Ito

Calvo

et al. 2015

Advanced Optical Materials

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a series of undesirable photoreactions promoted by the absorption of UV photons, which lead to the deterioration of their mechanical and optical properties. Polymers are usually transparent to part of the UV spectrum, so a commonly employed synthetic strategy to attain UV blocking fi lms is based on embedding inorganic [3][4][5][6][7] or organic [8][9][10] UV absorbers within a polymeric matrix. The main drawback of this approximation is the short term durability of the shielding effect as a result of the photodegradation of either host, guest, or both, caused by the absorption of the same radiation from which protection is sought after. [11][12][13] Approaches based on fl exible inorganic nano structured multilayers that effi ciently refl ect radiation in an arbitrary spectral range as a result of interference effects, rather than by absorption, present a promising alternative route worth to be explored. [14][15][16][17] Unfortunately, a similar approach based on the alternation of polymeric fi lms exclusively is not feasible since the refractive index contrast typically achieved is so small that a large number of layers is required to reach a signifi cant refl ectance, and only in a narrow spectral range. [ 18,19 ] The use of all-polymeric materials of high refractive index contrast to build multilayer back refl ectors or UV shields will also be an advantage in the fi eld of fl exible and polymeric solar cells, in which some approaches based on inorganic materials have already been developed. [ 20,21 ] Very recently, some of us proved that a porous stratifi ed structure displaying strong refl ection peaks in the UV range can be attained from a block copolymer (BCP) fi lm. [ 22 ] In particular, it was demonstrated that a fi lm made of a diblock copolymer containing polystyrene (PS) and polymethyl methacrylate (PMMA), in brief [poly(styreneblock -methyl methacrylate) PS-b -PMMA)], can be used as starting material to attain ordered porous multilayers through a process that involves collective osmotic shock (COS). The fi nal structure shows alternate dense and porous layers, with signifi cant refractive index contrast, which endow it with photonic crystal properties in the UV range. At that moment, the appearance of the layered structure was hypothetically attributed to dynamic effects during the COS process occurring over ordered arrangements of isolated PMMA spheres embedded in a cross-linked PS matrix in the starting slab, which had previously been subjected to thermal and UV annealing processes. Further studies, herein reported, have demonstrated that the mechanism of formation of the porous layered structure is different to that originally A synthetic route is demonstrated to build purely polymeric nanostructured multilayer coatings, adaptable to arbitrary surfaces, and capable of effi ciently blocking by refl ection a targeted and tunable ultraviolet (UV) range. Refl ection properties are determined by optical interference between UV light beams refl ected at the interfaces between polystyrene layers of diff...

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Synthesis and application of UV stabilizers for polymeric materials based on triazinylaminobenzotriazole

Cited by 24 publications

References 11 publications

Synthesis of some polymerizable triazinylaminobenzotriazole stabilizers and benzanthrone dyes containing a stabilizer fragment

Synthesis of some polymerizable triazinylaminobenzotriazole stabilizers and benzanthrone dyes containing a stabilizer fragment

Synthesis and application of triazinyl-2,2,6,6-tetramethyl-piperidine derivatives as stabilizers for polymeric materials

Adaptable Ultraviolet Reflecting Polymeric Multilayer Coatings of High Refractive Index Contrast

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