I understand that polyureas are very fast curing. Why don’t we see them used as adhesives?
October 29, 2020
Polyureas have a lot of similarity to polyurethanes, but they are two-component systems based on reacting an isocyanate with a multifunctional amine rather than with a polyol. This chemical reaction is extremely fast, quite often just a few seconds.
Technical sessions at the conference reportedly highlight topics from across the polyurethane industry, including updates on regulatory changes, breakthrough technologies, market data, and current challenges facing the industry.
October 8, 2019
Evonik recently announced that it will present six papers and one technical poster at the 2019 edition of The Center for Polyurethanes Industry’s (CPI) annual Technical Conference, which is taking place October 7-9 in Orlando, Fla.
Isocyanates react with compounds that have active hydrogens. For example, in coating applications, isocyanates are typically reacted with polyols to form polyurethanes, or with primary and secondary amines to form polyureas. Catalysis of the polyol/isocyanate reaction, which is often required to develop sufficient cure response, can be achieved with a variety of compounds.
A new polyol can extend the life of company equipment and facilities while meeting stringent federal containment regulations.
January 2, 2017
America’s infrastructure GPA stands at a D+, with an estimated $3.6 trillion of work needed by 2020 to repair the country’s out-of-date structures, bridges, roads, etc.1 Part of these issues lie within public parks and recreation, which are being used by a reported 140 million Americans on a daily basis.
Concrete is the most widely used building material in the world, due to its versatility, durability and ease of use. But it is also predisposed to developing random cracks, which quickly become arteries for water, salts, chemicals and other foreign materials to seep in.