发明名称 |
Sulfoisophthalic acid solution process therewith |
摘要 |
A process for producing a partially esterified SIPA such as an alkali metal sulfoisophthalic acid in a glycol is disclosed. The partially esterified SIPA in a glycol can be used to copolymerize with oligomer of terephthalic acid dimethyl terephthalate and a glycol. Also disclosed is a process for controlling the color of a dyeable polyester using a phosphorous compound. Further disclosed is a process for producing a dyeable polyester using a nickel or nickel alloy as surface metal or fluoropolymer surface in processing equipment.
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申请公布号 |
US6479619(B1) |
申请公布日期 |
2002.11.12 |
申请号 |
US20010808663 |
申请日期 |
2001.03.15 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
DUAN JIWEN F. |
分类号 |
C07C303/28;C07C309/77;C08G63/688;C08G63/78;C08G63/85;C08G63/87;(IPC1-7):C08G63/78 |
主分类号 |
C07C303/28 |
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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