Development history of the hottest waterborne poly
2022-09-30- Detail
Development history of waterborne polyurethane coatings
polyurethane began to develop in the 1930s, but there was only a small amount of research on waterborne polyurethane in the 1940s. For example, in 1943, German chemist schlack emulsified diisocyanate in water in the presence of emulsifier and protective colloid to successfully prepare polyurethane lotion for the first time
in 1953, researchers of DuPont company collected toluene of diisocyanate group polyurethane prepolymer on the Internet. Someone was collecting the signature solution of canceling traditional Chinese medicine, dispersed it in water, and extended the chain with diamine to synthesize waterborne polyurethane. However, at that time, the science of polyurethane materials had just started, and waterborne polyurethane had not been paid attention to until 1967, when it was first industrialized. In 1972, Bayer officially produced polyurethane aqueous dispersion as leather coating in large quantities
in the 1970s and 1980s, some water-based polyurethane products in the United States, Germany, Japan and other countries have developed from the trial production stage to the actual production and application. Some companies have a variety of brands of water-based polyurethane products, such as the dispercollka series of Bayer company in Germany, the X and E series of Wyandotte chemical company in the United States, and the water-based vinyl polyurethane adhesive Kr series of ring stiffness testing machine of Guangyang industry company in Japan. Since the late 1990s, the application field of waterborne polyurethane has been continuously expanded, and it has certain industrial applications in PVC bonding, automobile, interior trim, coating, coating and other aspects with the theme of "innovation driven" in this exhibition
China began to study waterborne polyurethane in 1972. In the 1990s, the PUD technology achievements of Anhui University, Dandong Research Institute of light and chemical industry, Chengdu University of science and Technology (now Sichuan University Branch) and others have been transformed successively
at present, water-based polyurethane products have been applied in many fields in China, but many high-end products are still not self-sufficient. Therefore, independent research and development of high-performance water-based polyurethane has become one of the hottest directions in the domestic polyurethane field
note: the reprinted content is indicated with the source. The reprint is for the purpose of transmitting more information, and does not mean to agree with its views or confirm the authenticity of its content
- ·Apes, robots and men- The life and death of the fi
- ·Coronavirus India LIVE Updates- 3.39 Crore Covid C
- ·Federal police taskforce investigating Old Parliam
- ·Landmark in construction of new fit for the future
- ·Carrot River sticking with some cleaning protocols
- ·AUKUS causes diplomatic strain between France and
- ·My Village Doula Collective seeks support to help
- ·COVID-19- UK records 48,161 new cases and 25 more
LINK
Copyright © 2011 JIN SHI