Wedoany.com Report on Feb 25th, According to data from Tianyancha APP, Dawei Shares (300535) has newly obtained a patent for invention authorization. The patent is named "A Stain-Resistant, Sound-Absorbing Hand Feel Agent for Leather and Its Preparation Method", with the patent application number CN202411858108.4, and the authorization date is November 4, 2025.

Patent Abstract: The present invention belongs to the field of leather auxiliaries, and specifically relates to a stain-resistant, sound-absorbing hand feel agent for leather and its preparation method. The preparation method is as follows: mixing diallyl polyether, allyl methacrylate, catalyst, and hydrogen-terminated polydimethylmethylhydrosiloxane, then heating for reaction to obtain an intermediate; mixing said intermediate with isotridecyl alcohol polyoxyethylene ether 1305 and isotridecyl alcohol polyoxyethylene ether 1307, then heating and stirring for dispersion, followed by adding deionized water and continuing to stir for dispersion.

The stain-resistant, sound-absorbing hand feel agent for leather described does not contain fluorine in its structure, thus it will not be restricted in use due to fluorine bans; additionally, unlike conventional hyperbranched polymers, this solution adopts silicon-hydrogen addition hyperbranched polymerization, which offers more flexible structural design, higher silicon crosslinking density, and can achieve good stain-resistant and sound-absorbing effects while improving the physical properties of the finishing system; the hand feel of the stain-resistant, sound-absorbing agent for leather has a relatively wide adjustment range, making it more widely applicable.