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:
Jan. 04, 1983
Filed:
Jun. 19, 1979
Applicant:
Inventors:
Assignee:
Ciba-Geigy AG, Basel, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08L / ; C08L / ;
U.S. Cl.
CPC ...
524 47 ; 524425 ; 524447 ;
Abstract
A coating composition for paper is provided, which composition consists of an aqueous preparation containing at least a polymeric binder, an inorganic pigment, and a water-insoluble urea-formaldehyde polycondensation product from 1 mole of urea and 1.3 to 2 moles, of formaldehyde, which product is in a highly dispersed form and has a mean particle diameter of 3 to 6 microns, and a specific BET surface urea of 3 to 12 m.sup.2 /g. Papers coated with these compositions exhibit, in addition to an enhanced degree of whiteness and equally good gloss and improved opacity and smoothness, above all better printability.