Industrialization of various WD coupling agents and direct alkoxy silane in wuhan university

Wuhan university of higher education system has also made remarkable achievements in the development of organic silicon products, especially silane coupling agents. In 1959, he served as the director of the chemistry institute of the Chinese academy of sciences, and then transferred to wuhan university to serve as the director of the chemistry department. From then on, wuhan university started the research and development of organosilicone and silane coupling agent.

(1) gamma-chloropropyl trichlorosilane

It is known that gamma-chloropropyl trichlorosilane or gamma-chloropropyl triethoxy silane are indispensable when preparing gamma-site silane coupling agents. Therefore, the organic silicon research, development and industrialization team of wuhan university, led by professor zhang xianliang and young liu jun, has focused on the hydrosilylation of trichlorosilane and allyl chloride (CH2= ch-ch2-cl) in the presence of chloroplatin/isopropanol catalyst since 1972. A process with no induction period and short synthesis time was developed successfully. The yield of gamma-chloropropyl trichlorosilane, an important intermediate of silane coupling agent, was increased, and the level of synthesis technology was greatly improved and the industrialization of gamma-chloropropyl trichlorosilane was firstly completed. In the early 1980s, wuhan university chemical plant successfully developed silane coupling intermediates such as gamma-chloropropyl triethoxy silane (wd-30) and began production. After that, silane coupling agent containing amino group, epoxyl group, methylacryloxyl group, polysulfide group and long chain alkyl group at gamma position was successfully developed and named as WD (the first letter of wuda pinyin script). Its production technology was then promoted in the chemical plant of wuhan university and more than 20 enterprises across the country.

Zhuo renxi, zhang xianliang and zhen guangquan of the university have also synthesized four kinds of compounds by hydrosilylation reaction of trichlorosilane with alpha-alkenes with different chemical structures, among which several varieties have good effects as anti-fog agents for optical glass. Used for glass coffin anti-reflection film surface protection coating, military telescope, gun mirror, periscope, etc. It won the 1978 national science conference award.

The long-chain alkyl silane developed by professor zhang xianliang of the university has been used by some units for the protection of aerial camera lens, high-speed camera lens protection of nuclear explosion, and the protection of dozens of cultural relics such as the big wild goose pagoda in xi 'an, cultural relics of the Palace Museum, qiaojia compound and yungang grottoes. In 1983, it won the third prize of national invention prize. The school has also set up a team of cultural relics conservation professionals, including zhang xianliang, zhen guangquan, liao jun, tong hua and huang chi.

In 1984, wuhan university began the synthesis and industrialization of thiosilane and amino silane. Polythiosilane coupling agent was developed for rubber tire, and was successfully industrialized in wuhan university chemical plant. With the development and expansion of dongguan hongbai, jianghan fine, rizhao lanxing and nanjing shuguang chemical general factory independently developing this product, China's annual total output of sulfosilane exceeds 30,000 tons, making it the world's largest sulfosilane producer.

In the new century, silane coupling agent has been widely used in hubei, shandong, jiangsu, guangdong and zhejiang provinces. The total production capacity of the rapidly developing vinyl silane coupling agent exceeds 10,000 tons per year, becoming a major global producer.