那Polyethylene glycol和Polyethylene oxide不同之处在哪里呢? Polyehylene Glycol is an addition polymer of ethylene oxide and water,represented by the formula: H(OCH2CH2)nOH in which n represents the average number of oxyethylene groups. The average molecular weight is not less than 95.0 percent ...
可是从结构上来说,都是聚醚的结构是吧?那Polyethylene glycol和Polyethylene oxide不同之处在哪里呢?Polyehylene Glycol is an addition polymer of ethylene oxide and water,represented by the formula:H(OCH2CH2)nOHin which n represents the average number of oxyethylene groups. The average molecular weight ...
Polyalkylene glycol compositions having reduced low molecular weight oligomers are disclosed. Some compositions, particularly polyethylene glycol compositions have a number average molecular weight range from about 3000 to about 10,000 g/mol and have a total oligomer concentration of less than about 400 ...
5.The polymerizable polyalkylene glycol according to claim 1,wherein the polymerizable polyalkylene glycol is produced by reacting an alkylene oxide with an unsaturated initiator, and2% by weight of a polymerizable polyalkylene glycol in which an addition number of the alkylene oxide molecules to 1 mo...
colourless solution. Polyethylene glycols with a molecular weight greater than or equal to 1000 are openly soluble in liquids. Water solubility and solubility in organic solvents degrade with increased molecular weight. Because polyethylene glycol (PEG) is a strong, water-soluble polym...
文档热度: 文档分类: 行业资料--石油、天然气工业 系统标签: glycolspolyethylenepolyalkylenepolyglycolsgenagenpolyglycol DivisionFunctionalChemicalsProductInformationDivisionFunctionalChemicalsExactlyyourchemistry.Polyalkylene/PolyethyleneGlycolsPolyalkylene/PolyethyleneGlycols2POLYALKYLENEGLYCOLS/POLYETHYLENEGLYCOLSPOLYALKYLENEGLYCOLS/...
Intermediates for conjugation of polypeptides with high molecular weight polyalkylene glycols A biologically persistent, water-soluble, substantially non- immunogenic, substantially non-antigenic conjugate of superoxide dismutase is prepared by coupling one to five strands of a polyalkylene glycol which is ...
Chika,YOSHIMURA Shuichi,TAKEHANA Tsuyoshi 申请号：JP2009069223 申请日：20091111 公开号：WO10/055866P1 公开日：20100520 专利内容由知识产权出版社提供 摘要：A method for producing a polyalkylene glycol derivative which has a molecular weight and purity high enough to be used in pharmaceutical applications...
Polyalkylene Glycol Poly[Oxy(Methyl-1,2-Ethanediyl) ], .Alpha.-Butyl-.Omega.-Hydroxy- Properties Boiling Point:K °C °F Flammability: Explosive Limits: Lower Explosive Limit:0% Upper Explosive Limit:0% Flammable Limits: Lower Flammable Limit:0% ...
可是从结构上来说,都是聚醚的结构是吧?那Polyethylene glycol和Polyethylene oxide不同之处在哪里呢?Polyehylene Glycol is an addition polymer of ethylene oxide and water,represented by the formula:H(OCH2CH2)nOHin which n represents the average number of oxyethylene groups. The average molecular weight ...