Zobrazeno 1 - 10
of 260
pro vyhledávání: '"Béla, Viskolcz"'
Autor:
Enikő Hornyák-Mester, Miklós Varga, Lilla Márta Sőrés-Tölli, Dóra Mentes, Alpár F. Hatvani-Nagy, Peter Werner Groh, Béla Viskolcz, Gábor Muránszky, Béla Fiser
Publikováno v:
eXPRESS Polymer Letters, Vol 18, Iss 10, Pp 964-975 (2024)
The degradation of different flexible polyurethane foams for molded application after thermal aging were compared. A reference sample using traditional higher emission additives and four samples of different composition using low-emission additives w
Externí odkaz:
https://doaj.org/article/7e2cf18e19e141639b1cc300f99e050e
Autor:
Dóra Mentes, Anikó Jordán, László Farkas, Gábor Muránszky, Béla Fiser, Béla Viskolcz, Csaba Póliska
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-11 (2024)
Abstract In Europe mainly at winter season the PM levels exceed air quality limits, which correlated with the operation of solid-fired boilers. More and more people are returning to using these devices due to energy shortage caused by the pandemic an
Externí odkaz:
https://doaj.org/article/a0cee36b2603492e8c6eea712e9aa351
Autor:
Viktória Hajdu, Emőke Sikora, Gábor Muránszky, Ferenc Kristály, Zoltán Kaleta, Miklós Nagy, Béla Viskolcz, Béla Fiser, László Vanyorek
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract The 2,4-toluenediamine (TDA) is one of the most important chemicals in the polyurethane industry, produced by the catalytic hydrogenation of 2,4-dinitrotoluene (DNT). The development of novel catalysts that can be easily recovered from the r
Externí odkaz:
https://doaj.org/article/753ee08299ea4517b19d62256828ee21
Autor:
Julie Mallouhi, Enikő Hornyák-Mester, Miklós Varga, Béla Viskolcz, Béla Fiser, Emma Szőri-Dorogházi
Publikováno v:
Heliyon, Vol 10, Iss 19, Pp e38440- (2024)
Polyurethanes (PUs) are a special class of polymeric materials that differ significantly from most other types of plastic in many aspects. They can be utilized in a wide range of products, including paints, coatings, elastomers, insulators, elastic f
Externí odkaz:
https://doaj.org/article/9abdb0c698ef460c8315ce2ab55e9b35
Autor:
Alpár F. Hatvani-Nagy, Viktória Hajdu, Ágnes Mária Ilosvai, Gábor Muránszky, Emőke Sikora, Ferenc Kristály, Lajos Daróczi, Béla Viskolcz, Béla Fiser, László Vanyorek
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-9 (2024)
Abstract Toluene diamine (TDA) is a major raw material in the polyurethane industry and thus, its production is highly important. TDA is obtained through the catalytic hydrogenation of 2,4-dinitrotoluene (2,4-DNT). In this study a special hydrogenati
Externí odkaz:
https://doaj.org/article/ba6ef8c706ad4a82a26ffa5613bcc1e9
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-8 (2023)
Abstract A theoretical study of urethane formation through the reaction of phenyl isocyanate and butan-1-ol was carried out, without and in the presence of morpholine, and 4-methylmorpholine catalysts. The reaction with and without catalysts was stud
Externí odkaz:
https://doaj.org/article/bc9529eaa4d944ef9c3b8c1fd4f65481
Autor:
Marcell Dániel Csécsi, Virág Kondor, Edina Reizer, Renáta Zsanett Boros, Péter Tóth, László Farkas, Béla Fiser, Zoltán Mucsi, Miklós Nagy, Béla Viskolcz
Publikováno v:
International Journal of Molecular Sciences, Vol 25, Iss 14, p 7991 (2024)
Carbodiimides are important crosslinkers in organic synthesis and are used in the isocyanate industry as modifier additives. Therefore, the understanding of their formation is of high importance. In this work, we present a theoretical B3LYP/6-31G(d)
Externí odkaz:
https://doaj.org/article/9ed99879bbfb4544861f7557016d460e
Autor:
Dalma Dojcsák, Flóra Farkas, Tamás Farkas, János Papp, Attila Garami, Béla Viskolcz, Csaba Váradi
Publikováno v:
International Journal of Molecular Sciences, Vol 25, Iss 12, p 6432 (2024)
The identification of pediatric appendicitis is challenging due to the lack of specific markers thereby several factors are included in the diagnostic process such as abdominal pain, ultrasonography and altered laboratory parameters (C reactive prote
Externí odkaz:
https://doaj.org/article/48fe7fd5d87a4d62af79863181fa1bd7
Publikováno v:
Molecules, Vol 29, Iss 10, p 2375 (2024)
A general mechanism for catalytic urethane formation in the presence of acid catalysts, dimethyl hydrogen phosphate (DMHP), methanesulfonic acid (MSA), and trifluoromethanesulfonic acid (TFMSA), has been studied using theoretical methods. The reactio
Externí odkaz:
https://doaj.org/article/f2956d115de14944847dda3e10ca7ee5
Autor:
Tamás Horváth, Karina Kecskés, Anikó Jordán Csábrádiné, Emma Szőri-Dorogházi, Béla Viskolcz, Milán Szőri
Publikováno v:
Polymers, Vol 16, Iss 8, p 1126 (2024)
A sudden increase in polyurethane (PU) production necessitates viable recycling methods for the waste generated. PU is one of the most important plastic materials with a wide range of applications; however, the stability of the urethane linkage is a
Externí odkaz:
https://doaj.org/article/5fae40e1333d4a6194780f5aad4f223b