POLYURETHANE PREPOLYMER COMPOSITION

• Main Authors: EMANUEL, Jr, RYAN, Tyler, LI, Wei
• Format: Patent
• Language: English; French
• Published: 24.10.2024
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; COMPOSITIONS BASED THEREON; DYES; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS AS ADHESIVES

A NCO-terminated polyurethane prepolymer composition based on the reaction of polymeric methylene diphenyldiisocyanate ("MDI") and/or polymeric methylene diphenyldiisocyanate ("pMDI") and polyols which further has a reduced amount of residual non-reacted diisocyanate monomers, as well as a process for preparing such polyurethane prepolymers. L'invention concerne une composition de prépolymère de polyuréthane à terminaison NCO basée sur la réaction de diisocyanate de diphénylméthylène ("MDI") polymérique et/ou de diisocyanate de diphénylméthylène polymérique ("pMDI") et de polyols, qui présente en outre une quantité réduite de monomères de diisocyanate résiduels n'ayant pas réagi, ainsi qu'un procédé de préparation de tels prépolymères de polyuréthane.