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. 12, 2021
Filed:
Dec. 26, 2016
Ecolab Usa Inc., St. Paul, MN (US);
Zhi Chen, Shanghai, CN;
Jinhai Xiao, Hubei, CN;
Xiaofeng Zhang, Jiangsu, CN;
Kun Hou, Shanghai, CN;
James L. Thomas, Naperville, IL (US);
Kaihong Huang, Fujian, CN;
ECOLAB USA INC., St. Paul, MN (US);
Abstract
The present application discloses a sizing method for making paper. An alkenyl succinic anhydride (ASA) is added to a papermaking process. An aluminum salt is added in one or more process steps during the papermaking process. Preferably, the aluminum salt is an aluminum salt which can generate free aluminum ion in aqueous solution. The sizing method of the present application enhances the usage efficiency of a sizing agent and the aluminum salt, as well as provides paper having a high moisture content.