The oligotrimerization of hexamethylene diisocyanate by tributylin oxide (TBTO), Zr(OBu)4, Ti(OBu),, and Pb-naphthenate was studied. For mild reaction conditions, i.e. weak catalyst (TBTO), low catalyst concentration and temperature, the reaction gave selectively the cyclic trimer (I) and not higher
Properties of polyisocyanurate resins obtained by polymerization of hexamethylene diisocyanate by organotin catalysts
β Scribed by Nathan Hakman; Gad Marom; Albert Zilkha
- Publisher
- Elsevier Science
- Year
- 1978
- Tongue
- English
- Weight
- 275 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0014-3057
No coin nor oath required. For personal study only.
β¦ Synopsis
AbstractmResults are given for the mechanical, thermal and flammability properties of polyisocyanurate resins obtained from hexamethylene diisocyanate by bis-(tributyltin)-oxide catalysis. It is shown that the mechanical properties of the isocyanurate resins and of their glass fibre-reinforced composites are comparable with those of commercial epoxy and polyester resins. The thermal stability and the flame retardance of the isocyanarate resins are far better than of epoxies or polyesters.
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