发明名称 |
Polycarbonate diol having high proportion of primary terminal OH |
摘要 |
Disclosed is a polycarbonate diol having diol monomer units and carbonate monomer units, wherein the amount of at least one diol monomer unit selected from the group consisting of a 1,5-pentanediol unit and a 1,6-hexanediol unit is from 50 to 100% by mole, based on the total molar amount of the diol monomer units, and wherein the ratio of primary hydroxyl groups in all terminal groups of the polycarbonate diol is in a specific range. Also disclosed is a thermoplastic polyurethane obtained by copolymerizing the above-mentioned polycarbonate diol and a polyisocyanate.
|
申请公布号 |
US7005495(B2) |
申请公布日期 |
2006.02.28 |
申请号 |
US20020275399 |
申请日期 |
2002.11.05 |
申请人 |
ASAHI KASEI KABUSHIKI KAISHA |
发明人 |
KONISHI MITSUO;MASUBUCHI TETSUO;YOKOTA KOSHIRO |
分类号 |
C08G18/44;C07C69/003;C07C69/96;C08G18/08;C08G18/10;C08G64/00;C08G64/02;C08G64/42 |
主分类号 |
C08G18/44 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|