Recently, the invention patent of “a quick-drying solvent-free anti-sagging polyurethane waterproof coating and its preparation method” of Karen Co., Ltd. was officially authorized by the Malaysian Patent Office, marking the waterproofing of Karen Co., Ltd. The paint production and manufacturing technology has been officially recognized by overseas markets.
The patent was applied for patent protection in China in 2018 and will be authorized in 2020. Within the 12-month period of priority, Karen conducted a PCT search, and the search results were excellent. It was convenient to confirm the overseas country at the meeting on February 22, 2021, and continue to submit overseas patent applications. After 5 years of protracted approval, Finally, it was successfully authorized by the Malaysian Patent Office on March 23, 2023.
At present, the conventional polyurethane prefabricated body on the market itself has a relatively high viscosity. In order to take into account the construction applicability and economical efficiency, it is necessary to add fillers, resulting in a higher viscosity of the coating itself. If no solvent is added, it will be difficult to apply.
The introduction of solvents is easy to volatilize during construction, which will affect the construction environment and cause air pollution. The current polyurethane waterproof coating also has the disadvantage of slow drying and film formation time, which is not conducive to construction in special environments (such as rainy days, winter and other harsh environments). If it cannot be dried quickly, the construction period will be delayed and the construction difficulty will be increased. , increase the construction cost.
In addition, for some large-scale projects, such as South-to-North Water Diversion, large stadiums, high-speed rail, subways, tunnels, civil air defense and other scenes, it is necessary to carry out waterproof construction on the facade or slope surface. Conventional paint will flow when painted on the facade or slope surface. The upper part is thin, the lower part is thicker, and the surface thickness of the coating film is uneven, which greatly reduces the efficiency and increases the construction cost. This series of hidden problems that consumers are not easy to detect makes it difficult to distinguish the good and bad of the paint market, and the good and the bad are mixed.
In order to solve the above pain points, Karen Co., Ltd. has independently developed a series of MPU white polyurethane waterproof coatings, which can be applied by scraping, rolling or mechanical spraying. The construction is convenient and efficient, and it has excellent drying film-forming speed and anti-sag performance. And the formed film has excellent physical and mechanical properties, and the surface is smooth and free of pores. In 2022, when the review results of the China Patent Award Recommended Waterproof Industry Patent Award were announced, Karen’s “A Single-Component Anti-Sag Polyurethane Waterproof Coating” won the Silver Award for Patent; special).
MPU construction renderings
Today, the product innovation and patent achievements of Karen Co., Ltd. complement each other, blooming both domestically and internationally. In the future, Kailun will continue to lead the development with technological innovation, provide customers and the society with more green and safe products, and add impetus to the development of industrial and civil construction waterproofing, municipal engineering, sponge city, low-carbon roofing and other fields.
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