Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1988-09-06
1991-10-15
Nielsen, Earl A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
523415, 523417, 523420, 525504, 528 45, 528 73, 528119, 528367, 528369, C08L 6300
Patent
active
050575597
ABSTRACT:
Cationic paint binders based on the reaction products of epoxide compounds with substituted carbamic acid derivatives and the use thereof in the formulation of cathodically deposited paints are described. The carbamic acid derivatives are urethanes, ureas, allophanates, and biuret compounds. Crosslinking functionality and/or protonatable groups are introduced by a suitable selection of blocking agents for the isocyanate compounds utilized. The reaction between the epoxide compounds and carbamic acid derivatives takes place in the presence of basic groups under relatively mild conditions; and, even when several carbamic acid moieties are present in a molecule, a readily soluble product is obtained.
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Paar Willibald
Schipfer Rudolf
Krass Frederick
Nielsen Earl A.
Vianova Kunstharz A.G.
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