发明名称 |
Synthesis of condensation polymers in densified fluids |
摘要 |
A polyurethane polymer and method of preparing it is described. The process requires the combination of a soluble polyol with a di- or polyisocyanate under densified fluid conditions. The process to prepare a waterborne polyurethane involves the utilization of a polyol containing ionic or latent ionic groups which must undergo preneutralization before combining with the di- or polyisocyanate under densified fluid conditions. The resulting polyurethane is substantially free of an organic solvent.
|
申请公布号 |
US6174956(B1) |
申请公布日期 |
2001.01.16 |
申请号 |
US19970800371 |
申请日期 |
1997.02.14 |
申请人 |
NATIONAL STARCH AND CHEMICAL INVESTMENT HOLDING CORPORATION |
发明人 |
KERSCHNER JUDITH LYNNE;JURELLER SHARON HARRIOTT;THOMAIDES JOHN SOCRATES;HUMPHREYS ROBERT WILLIAM;IOVINE CARMINE PHILLIP |
分类号 |
C08G18/08;C08G18/10;C08G18/12;C08G18/72;C08G18/75;(IPC1-7):C08J3/03;C08J3/05;C09D175/05;C09D175/08 |
主分类号 |
C08G18/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|