With 20 years rapid development, Qingdao Eastchem has grown to be a large comprehensive chemical enterprise group. Now, the group has Qingdao Easthony Inc, Qingdao Eastchem Inc., Dongying Haixing Chemical Co., Ltd, Dongying Eastchem Co., LTD , and two abroad offices in Malaysia, USA.
Years of experience
Bentonite clay in China
Chemical cross-linking is divided into two categories: chemical reagent cross-linking and radiation cross-linking. Chemical cross-linking refers to the formation of a gel by chemical cross-linking between PVA molecules through chemical cross-linking reagents. Commonly used cross-linking reagents inc2022-08-08
Polyvinyl alcohol is gradually discolored and brittle when heated to above 100°C in the air. Heated to 160～170℃ for dehydration and etherification, loses solubility, and starts to decompose when heated to 200℃. Above 250°C, it becomes a polymer containing conjugated double bonds. So what are the cha2022-08-05
The production process of polyvinyl alcohol is complex, requires multiple processes, and adds many types of raw materials, and by-products are easily generated during the reaction process. So what are the characteristics of polyvinyl alcohol production wastewater? Let's take a look next. Here is the2022-08-03