| 发明名称 |
Hyperbranched polyaspartate esters and a process for their preparation |
| 摘要 |
<p>The present invention relates to hyperbranched polyaspartate esters containing repeating structural units corresponding to the formula I and/or II
<Chemistry id="chema01" num="0001"><Image id="ia01" he="38" wi="105" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" /></Chemistry></p><p>The present invention also relates to a process for the preparation of these hyperbranched polyaspartate esters by self condensing, via a transesterification reaction, at least a portion of the hydroxy and ester groups of the hydroxy aspartates corresponding to the above formula at a temperature of 60 to 240°C to form hyperbranched polyaspartate esters and eliminating alcohols having the formula R<Sub>1</Sub>-OH and/or R<Sub>2</Sub>-OH.</p> |
| 申请公布号 |
EP0743335(A2) |
申请公布日期 |
1996.11.20 |
| 申请号 |
EP19960107069 |
申请日期 |
1996.05.06 |
| 申请人 |
BAYER CORPORATION |
发明人 |
YESKE, PHILIP E.;GINDIN, LYUBA K.;WICKS, DOUGLAS A.;JONSSON, E. HAAKAN |
| 分类号 |
C08G69/10;C07C229/24;C08G18/38;C08G18/46;C08G63/06;C08G63/685;C08G73/02;C08G83/00;C09D175/06;C09D201/00;C09J201/00;(IPC1-7):C08G63/685 |
主分类号 |
C08G69/10 |
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