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:
Jun. 07, 1977
Filed:
Jul. 18, 1975
Bayer Aktiengesellschaft, Leverkusen, DT;
Abstract
This invention relates to a process for the production of polyureas by reacting organic polyisocyanates with diamines, optionally in the presence of other polyfunctional compounds, i.e. polyfunctional in the isocyanate polyaddition context, having isocyanate-reactive hydrogen atoms, which is distinguished by the fact that the polyisocyanates used have an NCO-content of about 0.5 to 25%, by weight, and which, in addition, have an acylated urea group ##STR1## content of about 0.5 to 50% by weight and, optionally, a carbodiimide group (-N=C=N-) content of about 0 to 25% by weight. The invention also relates to the use of the polyureas obtained by this process for the production of coatings, lacquer finishes and impregnations.