B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
117/67, 18/683
B29D 12/00 (2006.01) B60J 1/00 (2006.01) B60J 10/02 (2006.01) C03C 17/32 (2006.01) C08G 18/65 (2006.01) C08G 59/50 (2006.01) C08G 59/68 (2006.01) C09J 163/00 (2006.01)
Patent
CA 1252003
PROCESS FOR ENCAPSULATING GLASS EDGES WITH AN ELASTIC POLYISOCYANATE ADDITION POLYMERIZATION PRODUCT USING AN EPOXY RESIN CURING SYSTEM AS THE ADHESION-IMPROVING AGENT Abstract of the Disclosure The invention is a process for encapsulating glass edges with an elastic polyisocyanate addition polymerization product which comprises coating an edge of glass with an adhesion-improving agent comprising an organic epoxy resin and a hardener and thereafter covering the coated edges with a polyurethane, polyurethane-polyurea or polyurea elasto- mer. The adhesion-improving agent is a two-component system comprising at least one organic epoxy resin and at least one hardener, preferably a polyamine and/or polyamine adduct, optionally dissolved in an organic solvent. A glass plate is positioned in a mold, the mold closed and the cavity between the plate of glass and the mold is injected, using a one-shot RIM process, with a reactive mixture of organic polyisocyanates, higher molecular weight compounds having at least two reactive hydrogen atoms, chain extenders and/or crosslinking agents, catalysts, and optionally auxiliaries and/or additives. The reaction mixture is allowed to cure, and the plate glass is removed.
511023
Hutchison John
Ropte Eckhard
Schmidt Hans U.
Basf Aktiengesellschaft
Robic Robic & Associes/associates
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