polyformaldehyde
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Which polyformaldehyde is good? Also, are there any good depolymerization methods for domestic products? This post was last edited by chinazwr on 2009-2-12 20:17.]
We’re using 92% Li Changrong’s polyformaldehyde, which is quite good. Do you want to use 92%, or 96%?
We’re using the 92 version, the Spanish one. Damn it, I’ve used domestic versions before, and their depolymerization effect isn’t very good
Could you reveal your depolymerization conditions?
The Spanish version abroad is really good
Has anyone used German polyoxymethylene? What are their products like? We want to introduce technology and are currently conducting research.
What are the main impurities in polyformaldehyde?
Hehe, if you want to use the domestic 96-grade product, please contact me. Our company can produce 10,000 tons per year. For 92-grade products, Zhenjiang Li Changrong, Yantai Wanhua, and Quzhou Guoguang are all excellent options. Personally, I don’t think there’s any need to use imported products, unless you are working with additives
Is there any way to quickly determine the content of paraformaldehyde?
Currently, Ningbo offers a variety of polyoxymethylene grades: ranging from 89% to 98%. Depending on the application area, the requirements for polyformaldehyde vary significantly. The requirements in the field of pesticides are relatively low, while standards are more stringent for amino resins, casting resins, and similar materials. At present, the vast majority of products in the pharmaceutical sector are imported. The analysis method is routine analysis; if the samples are homogeneous and do not clump together, the parallel samples will be satisfactory. It should take about 2 hours