Ths paper reviews the property, some methods about synthesis and use of polyvinyl pyrrolidone.
综述了聚乙烯吡咯烷酮的性质，合成方法及其应用。
The condensation and ammonification tests is proceed by using pyrrolidone as the start material.
以吡咯烷酮为起始原料进行成盐、缩合、氨化试验，考察影响收率的工艺因素。
The terpolymers of the invention: (a) a vinyl lactam, such as vinyl pyrrolidone or vinyl caprolactam;
发明的三元：（一）一乙烯基酰胺，如聚乙烯吡咯烷酮或乙烯基己内酰胺；
Refining method with solvent mixed A with N-methyl pyrrolidone was used to decolor the FCC diesel oil.
以溶剂A和N-甲基吡咯烷酮的混合物为萃取剂，对催化裂化柴油进行了脱色精制研究。
Etiracetam was synthesized from 2-pyrrolidone by N-alkylation and aminolysis. The overall yield was 42.6%.
吡咯烷酮经N烷基化、氨解反应合成了乙拉西坦，总收率42.6%。
The present invention discloses a kind of tobacco humectant, which is water solution of pyrrolidone carboxylate.
本发明公开了一种烟草保润剂，该烟草保润剂是吡咯烷酮羧酸盐的水溶液。
In the composite nanofibers, chemical bonding existed between polyvinyl pyrrolidone and iodine to form PVP - I2 complex.
在复合纳米纤维中，聚乙烯吡咯烷酮与碘之间存在着化学键合、形成了聚乙烯吡咯烷酮-碘络合物。
Polyvinylpyrrolidone (PVP) is a kind of fine polymer obtained by free radical polymerization of N-vinyl pyrrolidone (NVP).
聚乙烯基吡咯烷酮(pvp)，是一种水溶性精细高分子聚合物。
A comparison is made of the performances between N-methyl-2-pyrrolidone and commonly-used organic solutions in lithium batteries.
对比了n甲基2吡咯烷酮与常用锂电池有机溶剂的性能。
The adsorption conditions and effects on poly-phenol in Aloe vera gel with cross linked polyvinyl pyrrolidone (PVPP) was studied in this paper.
研究了交联聚乙烯吡咯烷酮(PVPP)吸附库拉索芦荟凝胶液中多酚的条件和效果。
Compared to the polyvinyl pyrrolidone, the rice hull adsorbent has advantages of fast adsorption, stronger adsorbability for tannin and lower cost.
与聚乙烯聚吡咯烷酮比较，具有吸附速度快、吸附单宁更强及成本低廉的优点。
The copolymers show good solubility in N, N-dimethylformamide (DMF), dimethyl sulphoxide (DMSO), N-methyl-2-pyrrolidone (NMP) and some inorganic acids like H2SO4.
共聚物在N，N-二甲基酰胺（DMF）、二甲基亚砜（DMSO）、N-甲基-2-吡咯烷酮（NMP）等极性溶剂和浓H2SO4中有良好的溶解性。
Freeze-dried vaccine was mixed with the vinyl-pyrrolidone monomer before being placed into microneedle molds and polymerized at room temperature using ultraviolet light.
而冷冻干燥的疫苗则在置入微针模子前与乙烯基吡咯烷酮单体混合、并在室温下用紫外光将混合物聚合。
This indicates that N-methyl pyrrolidone is superior to naphthalene in comprehensive heat transfer performance and is suitable to be used in moderate-temperature heat pipe.
实验表明N—甲基吡咯烷酮综合传热性能优于萘，可望作为中温热管工质使用。
The photografting polymerization of Nvinyl pyrrolidone (NVP) on the surface of LDPE film with photo grafting method was studied and LDPEgNVP was characterized by FTIR qualitatively.
采用一步法和二步法研究了聚乙烯薄膜表面的N- 乙烯基吡咯烷酮光接枝反应，并用傅立叶变换红外光谱仪定性表征了反应结果。
RESULTS:The optimized formulation was composed of microcrystalline cellulose 20%, cross-link polyvinyl pyrrolidone 6%, sodium carboxymethyl starch 5.5% and polyvinyl pyrrolidone 8%.
结果：优选的最佳处方为微晶纤维素20％、交联聚乙烯吡咯烷酮6％、羧甲基淀粉钠5．5％和聚乙烯吡咯烷酮8％。
Ingredients: Deionized Water, Glycerin, Butanediol, Safflower Extract, Allantoin, Phenoxyethanol, ha, PEG-40 Hydrogenated Castor Oil, Pyrrolidone Carbozylic Acid, EDTA-Disodium Salt, Essence.
产品成份：去离子水、甘油、丁二醇、红花提取液、尿囊素、苯氧乙醇、透明质酸、PEG - 40氢化蓖麻油、吡咯烷酮羧酸钠、EDTA -二钠、香料。
The invention also provides a solvent for the production process of knitted impregnated PU gloves, which is prepared from polyurethane resin and methyl l pyrrolidone according to a certain proportion.
本发明同时提供了一种用于该针织浸渍PU手套生产工艺的溶剂，由聚氨酯树脂和甲基吡咯烷酮按比例配制。
The invention also provides a solvent for the production process of knitted impregnated PU gloves, which is prepared from polyurethane resin and methyl l pyrrolidone according to a certain proportion.
本发明同时提供了一种用于该针织浸渍PU手套生产工艺的溶剂，由聚氨酯树脂和甲基吡咯烷酮按比例配制。
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