C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
149/25, 402/345
C08G 85/00 (2006.01) C11D 7/50 (2006.01) C23F 15/00 (2006.01) C23G 5/02 (2006.01) C11D 7/26 (2006.01) C11D 7/28 (2006.01) C11D 7/32 (2006.01) C11D 7/34 (2006.01)
Patent
CA 1255435
ABSTRACT OF THE DISCLOSURE A solvent-containing compound 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 for- mulas 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 for- mula HY - R1, wherein R2 HY = HN-, HO-, HS-, HOOC, wherein R2 = H or alkyl and R1 is any desired organic radical, which will not enter into polyaddition or polycondensation reactions with itself or with isocyanate groups.
496839
Unger Gerfried
Untucht Helmut
Winterstein Wolfgang
Metallgesellschaft Aktiengesellschaft
Robic Robic & Associes/associates
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