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. 17, 2006
Filed:
Dec. 28, 1999
Takaaki Tadokoro, Wakayama, JP;
Yasushi Ikeda, Wakayama, JP;
Toshiyuki Nishimori, Wakayama, JP;
Hiromichi Takahashi, Wakayama, JP;
Takaaki Tadokoro, Wakayama, JP;
Yasushi Ikeda, Wakayama, JP;
Toshiyuki Nishimori, Wakayama, JP;
Hiromichi Takahashi, Wakayama, JP;
Kao Corporation, Tokyo, JP;
Abstract
The present invention provides a paper quality improver for papermaking, for improving bulk value, brightness, and opacity of the pulp sheet. Further, the present invention provides a dry efficiency improver. A compound is used as the paper quality improver for papermaking, wherein the compound has less than 4% of lyotropic degree measured by a specific method and the compound satisfies at least two selected from (i) standard improved bulky value of not less than 0.02 g/cm, (ii) standard improved brightness of not less than 0.5 point and (iii) standard improved opacity of not less than 0.5 point. The compound is added internally into pulp slurry before or in papermaking step.