发明名称 |
HYDROXIPROPYLMETYLCELLULOSAETER LOSLIG I VATTEN OCH I VATTENFRI METANOL, AVSEDD ATT ANVENDAS SOM FORTJOCKNINSMEDEL, VID BELEGGNING AV TABELETTER OCH FOR GJUTNING AV FILMER |
摘要 |
Novel hydroxypropyl methylcellulose ethers have a methoxyl degree of substitution of from 0.2 to 1.0 and a hydroxypropyl molar substitution of at least about 1.5 with a total combined degree of substitution of at least about 1.8. These ethers have desirable solubility properties in anhydrous organic solvents such as methanol and ethanol and can be employed as thickeners and film formers. They are prepared by concurrent reaction of controlled proportions of methyl chloride and propylene oxide with alkali cellulose. |
申请公布号 |
SE396393(B) |
申请公布日期 |
1977.09.19 |
申请号 |
SE19740001016 |
申请日期 |
1974.01.25 |
申请人 |
* THE DOW CHEMICAL COMPANY |
发明人 |
G K * GREMINGER JR;C P * STRANGE;K L * KRUMEL;J L * HUDSON JR |
分类号 |
C08L1/00;A61K47/38;C08B11/193;(IPC1-7):08B11/08 |
主分类号 |
C08L1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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