MUMBAI, India, June 24 -- Intellectual Property India has published a patent application (202617063793 A) filed by Arakawa Chemical Industries, Ltd. on May 20, 2026, for Surface Paper Strength Enhancer, Coating Liquid, And Method For Producing Paper.
Inventors include Fujita Rina; Kobayashi Makoto; Ainoya Taku; and Ueda Haru.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: The present invention relates to: a surface paper strength enhancer containing a polymer (A) comprising, as reactive components, a (meth)acrylamide (a1), a (meth)acrylamide (a2) having a carboxy group, an ethylenically unsaturated monomer (a3) having a sulfo group, and a crosslinkable monomer (a4), wherein a solution of the surface paper strength enhancer having a non-volatile concentration of 20 wt% has a viscosity of 100-5,000 mPa·s at a temperature of 25°C; a coating liquid containing the surface paper strength enhancer; and a method for producing paper, the method comprising a step for applying the coating liquid to the surface of a base paper and then drying the coating liquid.
Disclaimer: Curated by HT Syndication.
