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:
Mar. 23, 2010
Filed:
Jun. 28, 2005
Kenneth Sundberg, Åbo, FI;
Jouko Käki, Turku, FI;
Tiina Luttikhedde, Raisio, FI;
Guomei Peng, Shirley, GB;
Kenneth Sundberg, Åbo, FI;
Jouko Käki, Turku, FI;
Tiina Luttikhedde, Raisio, FI;
Guomei Peng, Shirley, GB;
Ciba Specialty Chemicals Corporation, Tarrytown, NY (US);
Abstract
A paper sizing composition, comprising at least one first sizing component dispersed in water, the said sizing component being prepared of a reaction product of a maleic anhydride and a fatty acid component, and an aluminium component. The fatty acid component comprises an alkyl ester of one or more fatty acids selected from a vegetable oil based fatty acid mixture. The particle size of the particles in said first sizing component has been reduced so that in the dispersion at least 50% of the particles are <2.5 μm, at least 75% of the particles are <4 μm and at least 90% of the particles are <5 μm, preferably so that at least 50% of the particles are <2 μm, at least 75% of the particles are <3 μm and at least 90% of the particles are <4 μm.