发明名称 |
Process for the production of polyurethane urea elastomers |
摘要 |
This invention relates to a process for the production of non-cellular polyurethane ureas elastomers using a chain-extender mixture produced from asymmetrically alkyl-substituted anilines by condensation with formaldehyde. The chain-extending agents used in the instant invention show medium reactivity to compounds containing isocyanate groups. These chain-extending agents may be processed both in high-pressure and in low-pressure metering and mixing units because they are either liquid at room temperature or can be melted at relatively low temperatures (below 55 DEG C.). The homogeneous, i.e. non-cellular, polyurethane urea elastomers obtained in the instant invention are distinguished by having excellent mechanical properties.
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申请公布号 |
US4303773(A) |
申请公布日期 |
1981.12.01 |
申请号 |
US19800148109 |
申请日期 |
1980.05.09 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
GANSTER, OTTO;MEINERS, HANS J.;EIFLER, WILLI;MEYBORG, HOLGER;SCHWINDT, JUERGEN |
分类号 |
C08G18/00;C08G18/10;C08G18/28;C08G18/32;C08G18/54;C08G18/65;(IPC1-7):C08G18/32;C08G18/24;C08G18/16 |
主分类号 |
C08G18/00 |
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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