Kinetic study of the reaction between hydroxylated polybutadienes and isocyanates. 1. Reaction with tolylene diisocyanate (TDI)

Autor:	Raul Quijada, Fernanda M. B. Coutinho, Luis C. Rezende
Rok vydání:	1986
Předmět:	Arrhenius equation Polymers and Plastics Organic Chemistry Kinetics Chemical modification Rate equation Toluene symbols.namesake chemistry.chemical_compound Reaction rate constant Polybutadiene chemistry Polymer chemistry Materials Chemistry symbols Polyurethane
Zdroj:	Journal of Polymer Science Part A: Polymer Chemistry. 24:727-735
ISSN:	1099-0518 0887-624X
DOI:	10.1002/pola.1986.080240416
Popis:	A comparative kinetic study of the reaction of three different hydroxylated liquid polybutadienes (Mn ⋍ 3000) — R - 45M, R-45HT, and H-034—and tolylene diisocyanate (TDI), was carried out in toluene solution. An analytical method was used to follow the kinetics of the reactions at four different temperatures. The reactions presented an apparent second-order rate law. In the second-order plots, a discontinuity was observed. The R-45M polybutadiene was about twice more reactive than R-45HT and H-034; these latter two polybutadienes presented similar reactivities.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e53d4030b36e52380b119c9bf4b3d0b7 https://doi.org/10.1002/pola.1986.080240416 Zobrazit plný text záznamu Plný text