发明名称 |
PROCESS FOR MANUFACTURE OF POLYESTERS BASED ON 1,4-CYCLOHEXANEDIMETHANOL AND ISOPHTHALIC ACID |
摘要 |
In a process for producing a polyester containing 1,4-cyclohexanedimethanol (CHDM) as one of its glycol components, an aqueous or a methanolic slurry comprising CHDM and a dicarboxylic acid is prepared. The slurry is maintained at a temperature below the melting point of CHDM. The slurry is then fed into a reactor. The slurry is esterified at sufficient temperatures and pressures, and optionally in the presence of a suitable catalyst, to effect esterification. A prepolymer is formed. The prepolymer is then polycondensed at sufficient temperatures and pressures in the presence of a suitable catalyst to effect polycondensation to form a polyester. |
申请公布号 |
WO02057334(A2) |
申请公布日期 |
2002.07.25 |
申请号 |
WO2002US01261 |
申请日期 |
2002.01.17 |
申请人 |
EASTMAN CHEMICAL COMPANY |
发明人 |
HOWELL, EARL, EDMONDSON, JR.;QUILLEN, DONNA, RICE;EDENS, AARON, NATHANIEL |
分类号 |
C08G63/81;C08G63/199;C08G63/78 |
主分类号 |
C08G63/81 |
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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