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:
Dec. 18, 1984
Filed:
Jul. 12, 1983
Applicant:
Inventors:
Heinrich Alberts, Cologne, DE;
Manfred Dahm, Leverkusen, DE;
Gert Jabs, Odenthal, DE;
Christian Wegner, Cologne, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
264-47 ; 252194 ; 252385 ; 42840221 ;
Abstract
A process for spray drying aqueous suspensions of microcapsules having walls of polyurea which have been formed in known manner from polyisocyanate and polyamine by interface polyaddition, in which from 1 to 10 parts by weight, based on the microcapsules, of a water-soluble silicate and/or a water-soluble alkaline earth metal salt or hydroxide are added to the aqueous reaction mixture of polyisocyanate and polyamine.