MUMBAI, India, Sept. 7 -- Intellectual Property India has published a patent application (202617081639 A) filed by Kemira Oyj on July 02, 2026, for Method For Preparing Sizing Agent.
Inventors include Jing, Rongkuan; Liu, Chen; Li, Can; and Li, Fengyang.
The application for the patent was published on September 04, 2026, under issue no. 36/2026.
Abstract: The present invention relates to the field of papermaking. In particular, the present invention relates to a method for preparing a sizing agent. The method of the present invention comprises the following steps: (1) pre-adding a first part of TEA of total TEA to a HEEL-containing reaction system to obtain a TEA-pre-added HEEL- containing reaction system; and (2) adding the remaining second part of TEA of the total TEA and FACl to the TEA-pre-added HEL-containing reaction system, and reacting same, wherein the weight percentage of the first part in the total TEA is not greater than 90% of the total TEA. The present method can reduce the viscosity of reaction systems, and/or achieves toluene-free operation.
Disclaimer: Curated by HT Syndication.
