Method of producing isocyanate component of a polyurethane glue

The method of producing an isocyanate component of a polyurethane glue out of glycol, tolylene diisocyanate, polyoxypropylenediols with the molecular weight of 2000-6000, with possible use of a known catalyst and toluene and cyclohexanon as solvents. Characterized in that: A mixture of polyoxypropyl...

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Hauptverfasser:	LIPINSKA GABRIELA, PLACZKIEWICZ KRZYSZTOF, ROMANOWSKI JERZY, RAROG WLADYSLAW, ZAPALA STANISLAW, MAKARSKI STANISLAW, PIECZARA EWA, BICZUL ELZBIETA, RYSZEWSKI CZESLAW, KUPIEC EWA, LOS WALENTY
Format:	Patent
Sprache:	eng ; pol
Schlagworte:	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
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Beschreibung
Zusammenfassung:	The method of producing an isocyanate component of a polyurethane glue out of glycol, tolylene diisocyanate, polyoxypropylenediols with the molecular weight of 2000-6000, with possible use of a known catalyst and toluene and cyclohexanon as solvents. Characterized in that: A mixture of polyoxypropylenediol with the molecular weight of 2000-6000 and glycol, with the glycol content of 8 percent by mass, is subjected to reaction with tolylene diisocyanate. A mixture of polyoxypropylenediol with the molecular weight of 2000-6000 and glycol, with the glycol content of 8 percent by mass, is subjected to reaction with tolylene diisocyanate. }The reaction may be carried out in the presence of 0.8 percent by mass of a known catalyst, while the ratio by mass of polyoxypropylenediol to tolylene diisocyanate is within the range of 1:1.07-1.1, preferably 1:1.1. Then, the product of the reaction is dissolved in toluene or a mixture consisting of 50 percent by mass of cyclohexanone and 50 percent by mass of toluene, while mono-, di- or tri-ethylene or mono-, di- or tri-propylene glycols are used. Preferably, the monopropylene glycol should be used.