C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/7303, 400/79
C09D 5/44 (2006.01) C08G 12/46 (2006.01) C08G 59/50 (2006.01) C08G 59/56 (2006.01) C09D 17/00 (2006.01)
Patent
CA 1332993
Preparation of pigment paste resins for cathodi- cally depositable coating compositions based on epoxy resin- amine adducts obtained from unmodified or modified epoxy resins, which by partial or complete reaction of secondary amino groups with formaldehyde contain oxazolidine struc- tures; whose tertiary amino groups introduced via primary- tertiary diamines are quaternized to at least 20 mol % using an organic acid and a monoglycidyl compound and which in a solution adjusted with water to a correct application viscosity contain a total of 80 to 100 millimoles of acid per 100 g of solid resin are described. The pigment pastes possess, both in concentrated and dilute form, a stability which meets practical requirements and, because of their rheology, are readily processed to ensure formation of defect-free films both during deposition and crosslinking by stoving. The applied films have good properties.
612044
Honig Helmut
Matzer Herbert
Pampouchidis Georg
Fetherstonhaugh & Co.
Vianova Kunstharz Aktiengesellschaft
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