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:
Oct. 29, 1996
Filed:
Jun. 02, 1995
Applicant:
Inventors:
Patricia B Jacobs, Pittsburgh, PA (US);
Kenneth P Yonek, McMurray, PA (US);
Assignee:
Bayer Corporation, Pittsburgh, PA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08J / ; C08K / ; C08L / ; B32B / ;
U.S. Cl.
CPC ...
524591 ; 524589 ; 524590 ; 524839 ; 524840 ; 524539 ; 4284231 ;
Abstract
The present invention relates to aqueous polyurea dispersions wherein the polyureas contain 0.1 to 25% by weight, based on the weight of the polyureas, of en-urea groups (calculated as --NH--C(O)--N--, MW 57) obtained by the reaction of an isocyanate group with an aldimine group prepared from a cyclic polyamine containing (cyclo)aliphatically bound amino groups. The present invention also relates to a process for preparing these aqueous polyurea dispersions and to their use for preparing coatings.