WebNov 2, 2024 · Methylene diphenyl diisocyanates (MDIs) are essential building blocks in the production of polyurethanes, urethane-prepolymers, and polyisocyanurate polymers in many industries. Because of their reactivity and versatility of combining with an wide array of curatives and chain extenders, MDIs are used in countless diverse applications. WebMethod according to claim 10 wherein the di-isocyanates are aromatic, preferably tolylene di-isocyanate or diphenylmethane diisocyanate. 12. Method according to any one of claims 1 to 9 wherein both the permeate and the retentate stream comprise polymeric methylene di-isocyanate.
HYDROGEL COMPOSITIONS - US20240369911A1 PatentGuru
Web1. A flexible polyurethane foam comprising the reaction product of: an isocyanate component which is substantially free of toluene diisocyanate and comprises; polymeric diphenylmethane diisocyanate in an amount of from about 1 to about 30 parts by weight based on 100 parts by weight of said isocyanate component, and a monomeric … WebMar 1, 2024 · DESMODUR® E 22. Solvent-free, medium viscosity aromatic polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). Used in in formulation of highly flexible one and two-component polyurethane adhesives and in solvent-free moisture-curing, one-component adhesives. Can be used to bond many materials such as wood, … thorne \\u0026 derrick
LUPRANATE Isocyanates - Azelis Canada Innovation through …
Web1. A process for preparing a polymer that coats a substrate, comprising: providing a polyisocyanate component including aromatic isocyanates, the polyisocyanate component having an NCO group content of about 3% to about 50% and an average functionality of about 2 to about 3; providing an isocyanate-reactive component, the isocyanate-reactive … WebPU-Prepolymers - Adhesives Ingredients Selection - SpecialChem. Find all PU-Prepolymers for Adhesives & Sealants and access the knowledge to select them … WebDESMODUR® E 28 by Covestro is a polyisocyanate prepolymer based on diphenylmethane diisocyanate (MDI). Offers protection of the substrate from chemicals, deicing salt, and mineral oils. Used in... umtr south schedule