Isocyanates and Polyols - BASF
Our product line of polyurethane raw materials consists of Lupranat ® aromatic isocyanates (MDI, MDI derivatives and TDI), Lupranol ® and Lupraphen ® polyols. Our materials are provided through direct sales and through distribution, and are available in bulk shipments (rail cars, tank trucks) as well as IBC and drums.
The chemistry of polyurethanes - li
The basic synthesis involves the exothermic condensation reaction of an isocyanate (R’-(N=C=O) n) and a hydroxyl-containing compound, typically a polyol (R-(OH) n) (Figure 3). The reaction proceeds readily at room temperature, regardless of a catalyst, and is typically completed in a few seconds to several minutes depending on the formulation ...
Isocyanate and Polyol Products - BASF Polyurethanes
BASF is a leading supplier of basic polyurethane chemicals such as our Lupranate® aromatic isocyanates (MDI, TDI, Blends and Prepolymers) as well as both Pluracol® polyether polyols (including graft) and Lupraphen® polyester polyols.
Polyurethane Formulation: Isocyanate and Polyols - Doxu Chemical
2023年11月8日 — Polyols and isocyanates are two essential building blocks for the formulation of polyurethanes. What exact roles and functions do they provide during the Isocyanate Polyol Reaction? How they affect the final products? Let’s dive in to understand the chemistry between isocyanates and polyols.
Polyisocyanurate - Wikipedia
Polyisocyanurate (/ ˌpɒlɪˌaɪsoʊsaɪˈænjʊəreɪt /), also referred to as PIR, polyol, or ISO, is a thermoset plastic [1] typically produced as a foam and used as rigid thermal insulation.
Isocyanates - BASF
Products include monomeric and polymeric methylene diphenyl isocyanate (MDI), toluene diisocyanate (TDI), modified MDI, and MDI prepolymers. In the chemical industry, TDI is used for the production of slabstock and molded foam as well as for various CASE applications.
and isocyanate groups and how to control the properties of polyurethanes to make them suitable for specific applications. This section covers the main materials used for the synthesis and formulation of polyurethanes such as polyols, isocyanates, catalysts, blowing agents, surfactants, and …
Polyurethanes (PUs) are polymeric materials that contain a urethane linkage [NH–C(O)–O]. They are formed by the reaction between components containing hydroxyl (–OH) groups, such as components that contain polyol and isocyanate (–N=C=O).
Polyisocyanates: A deep dive behind the chemistry - Prospector by …
2021年7月15日 — Di-isocyanates are manufactured for reactions with polyols in the production of polyurethanes. Isocyanates are produced by treating amines with phosgene: RNH 2 + COCl 2 → RNCO + 2 HCl. Phosgene is a highly hazardous material, and the production of isocyanates requires special precautions and care.
ACS Symposium Series (ACS Publications)
2021年5月19日 — This chapter discusses some of the important topics of polyurethanes including their chemistry, mechanism, and synthesis of new materials (such as polyols and isocyanates). It also discusses the role and variety of other ingredients—such as chain extenders, cross-linkers, catalysts, and additives—to understand how they can influence the ...