B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
117/129
B32B 13/12 (2006.01)
Patent
CA 1231276
ABSTRACT OF THE DISCLOSURE The present invention relates to a method for obtaining a frictional bond between concrete and an object coated with a thermosetting plastic using an epoxy cement mortar mixture. The mixture contains an epoxy resin diammonium salt emulsion compri- sing a liquid epoxy resin, a latent curing agent and an emulsi- fier. A diamine of formula I or II: H2N - CH2 - R - NH2 (I) H2N - R - CH2 - R - NH2 (II) wherein R is a substituted alkylene or a cycloalkylene residue with 6 to 9 C atoms or an aralkylene residue with 7 to 9 C atoms, neutralized with an acid consisting of or containing oxalic acid used as the latent curing agent, and a C8- to C14- alcohol or an adduct thereof with up to 10 ethylene-oxide groups is used as the emulsifier. The method is particularly useful in applying con- crete casings to powder-painted oil or gas transportation pipelines for providing additional weight or additional protection.
496068
Mutzberg Friedhelm
Riemer Heinz
Weiss Jorn-Volker
Chemische Werke Huls Aktiengesellschaft
Degussa-Huls Aktiengesellschaft
Fetherstonhaugh & Co.
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