1970
DOI: 10.1016/0032-3950(70)90401-6
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Mechanism of polyurethane formation with tin dibutyl-laurate

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1970
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Cited by 9 publications
(6 citation statements)
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“…For example, existence of tin–alcohol complexes19–22 as well as complexation of tin compounds with isocyanates22, 23 were detected. Thus, it was proposed24–28 that ternary complexes involving tin compounds were formed. Other mechanisms were also proposed that involved rapid equilibrium formation of a complex between a tin compound and an alcohol29 or isocyanate,30 followed by a slow bimolecular reaction of the complex with other reactant.…”
Section: Introductionmentioning
confidence: 99%
“…For example, existence of tin–alcohol complexes19–22 as well as complexation of tin compounds with isocyanates22, 23 were detected. Thus, it was proposed24–28 that ternary complexes involving tin compounds were formed. Other mechanisms were also proposed that involved rapid equilibrium formation of a complex between a tin compound and an alcohol29 or isocyanate,30 followed by a slow bimolecular reaction of the complex with other reactant.…”
Section: Introductionmentioning
confidence: 99%
“…The unclear dependence of polymerization rate (which in turn can affect aerogel morphology) on processing parameters might be related to formation complexes between hydroxyl groups, tin catalyst, and isocyanates. Binary (Sn-OH) and ternary complexes (Sn-OH-NCO) have been reported by several authors (see, for example, [20,21]). Structure and concentration of these complexes appear to depend on the solvent (which may coordinate with the reagents or the catalyst).…”
Section: Influence Of the Gelation Solventmentioning
confidence: 93%
“…The organometallic compounds form complexes with the polyol and, possibly, with the isocyanates. These complexes are often short-lived and appear to depend on the type of precursors [17][18][19][20][21]. Solvents also affect the reaction rate of acid-catalyzed polymerization.…”
Section: Introductionmentioning
confidence: 99%
“…In excellent reviews Frisch, et al (22,71), covered the importance of catalysts and Ulrich (194) covered the "unconventional chemistry" of isocyanates. There have also been many papers (84,123,124,157) published studying the function of the catalyst under more specific conditions. g. Degradation.…”
Section: Studies Of Propertiesmentioning
confidence: 99%