2-Pyrrolidone2-P
01
Ulanqab Kema New Material Co., LtdProvide new materials for customers
Hotline:155-4740-0001
熱門關(guān)鍵詞：
Ulanqab Kema New Material Co,.Ltd. has constructed the production line project with an annual output of 3000 tons of vinyl pyrrolidone (NVP) and 1500 tons of polyvinyl pyrrolidone (PVP: K30, K90).
The quality reaches industrial level
Unity · endeavor · honesty · innovation
Application: plastic / Wood / paper / metal / ink / Electronics / adhesives
N-vinylamides are fine chemicals which have been studied deeply and widely
Povidone iodine is a loose complex formed by the combination of elemental iodine and polymer carrier
Application: as stabilizer, beer, Baijiu, grape juice and fruit juice are extended to prolong its storage period.
Pvk-30 has been widely used in medicine, and it is widely used as the adhesive for tablets and granules
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On January 6, 2021, the annual meeting of Ulanqab Kema new materials Co., Ltd. arrived as scheduled, and all the staff gathered together to count the details of our hard work in 2020. At the beginning of the annual meeting, Zhang Yu, chairman of the board
On October 14-16, 2020, the 85th China international pharmaceutical raw materials / intermediates / packaging / Equipment Fair will be held in Nanjing International Expo Center. Kema company started construction in March 2018, put materials into trial ru...
In the face of difficulties, we went up against the wind and experienced the epidemic situation. We cherish our lives more, but we are never afraid. On December 16, 2020, Kema company made careful preparations. Mr. Zhang Yu, chairman of Kema new materials...
As we know, the use of each technology has several disadvantages. For example, the formation of salt is a complex process, in which the increase of solubility is not always predictable. This method is not suitable for neutral compound 37. As another examp...
通過進(jìn)一步的研究，得到了NVP在丙烯酸或kso存在下的水解機(jī)理。NVP分子中乙烯基的電荷不平衡，即雙鍵連接的兩個(gè)碳原子的電荷密度不同。這種電荷不平衡為NVP的水解提供了可能。當(dāng)存在酸性或堿性離子時(shí)，NVP在分子中發(fā)生異構(gòu)化，形成一系列過渡態(tài)，NVP水解的第二步是吡咯烷酮與NVP分子的加成反應(yīng)，產(chǎn)物在水存在下進(jìn)一步分解為吡咯烷酮和乙醛。
聚維酮K30是通過對(duì)吡咯烷酮和乙烯加壓而制備的乙烯基吡咯烷酮單體，以及通過催化劑的聚合而獲得的1-乙烯基-2-吡咯烷酮均聚物。聚維酮K30疏水性和親水性?；瘜W(xué)性質(zhì)相對(duì)穩(wěn)定，藥物制劑效果良好。它是重要的固體制劑賦形劑。目前，它在醫(yī)藥領(lǐng)域得到了廣泛的應(yīng)用，行業(yè)具有良好的發(fā)展前景。...
酯類使用的增稠劑增稠機(jī)理是由于同系物而形成的，烷醇酰胺的機(jī)理是酯類主要用于表面活性劑水溶液體系中。...
表面活性增稠劑：一部分的甜菜堿也可以作增稠劑。...
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