The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 11, 1989
Filed:
Jan. 13, 1987
Rene- Andres Gonzalez, Duesseldorf, DE;
Winfried Emmerling, Erkrath, DE;
Tore Podola, Monheim, DE;
Klaus Neitzer, Duesseldorf, DE;
Henkel Kommanditgesellschaft auf Aktien, Duesseldorf, DE;
Abstract
A process for the production of oligourethanes containing terminal mercapto groups in which the adduct of propylene oxide with trimethylol propane and/or glycerol and/or trimethylol ethane as alkylene oxide adduct containing OH-groups is reacted with isomeric tolylene diisocyanates in excess, based on hydroxyl groups, and the isocyanate groups are further reacted with mercaptoethanol. The adduct of propylene oxide with the trifunctional alcohol is intended to have a calculated molecular weight of from about 1800 to about 6000 and preferably of from about 2000 to about 5000, the reaction products being used for the production of sealing compounds hardening by oxidation or as an additive for crosslinkable epoxy resin systems.