发明名称 |
Poly(1,3-propylene therephthalate) |
摘要 |
The present invention provides a novel poly(1,3-propylene terephthalate), which is prepared from reacting terephthalic acid and 1,3-propanediol in the presence of an effective catalytic amount of ethylene glycol titanate to undergo esterification to form a monomer; and polymerizing the monomer in the presence of an effective catalytic amount of antimony acetate to obtain poly(1,3-propylene terephthalate). The obtained poly(1,3-propylene terephthalate) (PPT) has an intrinsic viscosity (IV) of 0.65-0.91 dl/g, acid number (-COOH amount) of less than 40 meq/kg, and L*>60. Without adding a pigment, the yellowness b* of PPT is below 9, even below 5. The yellowness b* of PPT even reaches below 3 when a pigment is incorporated.
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申请公布号 |
US5872204(A) |
申请公布日期 |
1999.02.16 |
申请号 |
US19980036096 |
申请日期 |
1998.03.06 |
申请人 |
INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE |
发明人 |
KUO, TUNG-YING;HUANG, JIH-CHEN;LIAO, CHIEN-SHIUN;TSENG, I-MIN;JUANG, CHYUAN;JEAN, LONG-SHUEN |
分类号 |
C08G63/183;C08G63/82;C08G63/85;(IPC1-7):C08G63/78;C08K3/02 |
主分类号 |
C08G63/183 |
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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