Topic: Agrochemistry Amino Acids APIs Food Additives Paint Paint&Pigment Pesticide Intermediates Pharmaceutical Intermediates Polyimide Raw Materials Resin Coating Resin Raw Materials Rubber Additives Silane Coupling Agent Water Treatment Agent

Home | Topics | agrochemistry, amino-acids, apis, food-additives, paint, paint-pigment, pesticide-intermediates, pharmaceutical-intermediates, polyimide-raw-materials, resin-coating, resin-raw-materials, rubber-additives, silane-coupling-agent, water-treatment-agent

Why You Should Purchase Chemicals in China through Sunchem

China has become a major player in the global chemical market in recent years. With its vast production capacity and lower costs, many businesses around the world are turning to China to source their chemical needs. However, procuring chemicals in China can be a complex and challenging process, especially for foreign businesses. That's why it's […]

Hindered Amine Light Stabilizers

Hindered amine light stabilizers (HALS) are one of the most important thermal/light stabilizing agents of polymeric materials due to their excellent compatibility and photo-stabilization effect on organic materials. The synthetic technologies of hindered amine light stabilizers 5529 and 5513 were established in this paper. Through deeply systematic research, domestic technical difficulties in hindered amine light stabilizers 5529 industrial productions in taking off impurities and decolorization have been resolved, establishing the production technology of high quality 5529 and conducting industrial production practice. Based on the investigation of the transesterification between dimethyl sebacate and 1,2,2,6,6-pentamethyl-4-piperonal, the synthetic technologies of the Solvent method and free solvent method were established in the second chapter. The hindered amine light stabilizers 5529 were obtained in the yield of97.9% and 97.6% respectively and qualified as the advanced level of the kindred overseas products.

New Domestic Materials

new materials industry is in the transition stage from self-sufficiency of low-end products to independent research and development of mid- and high-end products and import substitution. China's high-end new materials technology and production is weak, although the production capacity has increased significantly in recent years, but can not meet the demand for high-end products.

Polyimide Hollow Fiber

Polyimide hollow fiber is widely used in gas separation and alcohol dehydration due to its high specific surface area and loading density.

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