发明名称 |
Method of cleaning equipment for handling reactive multicomponent mixtures of high viscosity |
摘要 |
A solvent-containing composition for the cleaning of equipment used to mix and handle reactive multicomponent mixtures of high viscosity, which react to form polymers. In order to improve the capacity of the solvent to dissolve the more or less polymerized mixtures, the solvent contains a chain-terminating agent. For binary systems containing liquid polysulfide polymers, the solvent contains a chain-terminating agent or chain-degrading agent containing mercapto group-containing compounds of the general formula R-SH or disulfide or polysulfide group-containing compounds of the general formula R-Sn-R, in which formulas n>/=2 and R represents equal or difficult alkyl residues, aryl residues or substituted alkyl or aryl residues. For binary polyurethane systems, the solvent contains chain-terminating compounds which in their molecule contain a Zerewitinoff-active hydrogen atom and have the general formula HY-R1, wherein <IMAGE> where R2=H or alkyl and R1 is an organic radical which will not enter into polyaddition or polycondensation reactions with itself or with isocyanate groups.
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申请公布号 |
US4675126(A) |
申请公布日期 |
1987.06.23 |
申请号 |
US19850805847 |
申请日期 |
1985.12.05 |
申请人 |
METALLGESELLSCHAFT AKTIENGESELLSCHAFT |
发明人 |
UNGER, GERFRIED;UNTUCHT, HELMUT;WINTERSTEIN, WOLFGANG |
分类号 |
C08F2/38;C08G85/00;C11D7/26;C11D7/28;C11D7/32;C11D7/34;C11D7/50;(IPC1-7):C11D7/30 |
主分类号 |
C08F2/38 |
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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