发明名称 |
POLYURETHANES CURED WITH 4,4'-METHYLENE-BIS-(3-CHLORO-2,6-DIETHYLANILINE) |
摘要 |
Polyurethane prepolymers are disclosed prepared with mononuclear aromatic diisocyanate such as toluene diisocyanate and an aliphatic diisocyanate such as H12MDI. These prepolymers can be cured with 4,4'-methylene-bis-(3-chloro-2,6-diethylaniline) to form a cured urethane elastomer with reduced propensity to crack during the curing process, extended pour life (a slower rate of viscosity buildup after curative and prepolymer are mixed), low hysteresis, and a low level of free toluene diisocyanates and/or other toxic or volatile substances to increase worker safety during processing. It has also been found that prepolymers made from toluene diisocyanate and cured with a blend of two aromatic diamine curatives yield urethane elastomers with the same reduced propensity to crack during the curing process.
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申请公布号 |
CA2150386(A1) |
申请公布日期 |
1994.06.23 |
申请号 |
CA19932150386 |
申请日期 |
1993.11.17 |
申请人 |
UNIROYAL CHEMICAL COMPANY, INC. |
发明人 |
ROSENBERG, RONALD OWEN;SINGH, AJAIB;FUEST, RONALD WALTER |
分类号 |
C08G18/10;C08G18/32;C08G18/38;C08G18/65;C08G18/72;C08G18/75;C08G18/76;(IPC1-7):C07C271/08 |
主分类号 |
C08G18/10 |
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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