发明名称 |
Polymer-containing polyether polyamines and a process for the production of these polyamines |
摘要 |
Polyether-based urethane-group-containing polyamines containing polymers and/or copolymers of unsaturated monomers and, optionally, urea and/or biuret and/or allophanate groups are produced by (a) reacting an NCO-prepolymer in aqueous alkaline solution at 0 DEG to 40 DEG C. to form a carbamate; (b) converting this carbamate to an amine by adding an ion exchanger to the reaction mixture; and (c) separating the polyamine from the reaction mixture. The NCO-prepolymers used as starting materials are prepolymers of (i) polyalkylene ether polyols having a molecular weight of from 1,000 to 10,000 containing from 1 to 60 wt. % of graft (co)polymers of unsaturated monomers; and (ii) excess molar quantities of organic polyisocyanate; and optionally, (iii) a low molecular weight chain-extending agent. The product polyamines have a molecular weight of from 1,000 to 10,000 and contain from 0.65 to 59.3 wt. % graft (co)polymer and from 0.11 to 2.9 wt. % terminal NH2 groups attached to the ethers by urethane groups in the polyisocyanate. The product polyamines are particularly useful in the production of polyurethanes.
|
申请公布号 |
US4532266(A) |
申请公布日期 |
1985.07.30 |
申请号 |
US19820360037 |
申请日期 |
1982.03.19 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
RASSHOFER, WERNER;BALLE, GERHARD;DIETERICH, DIETER;MEYBORG, HOLGER |
分类号 |
C08G18/10;C08G18/12;C08G18/50;C08G18/63;(IPC1-7):C07C127/15;C07C127/24 |
主分类号 |
C08G18/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|