Cationic paint binders based on polyether urethanes and process

Details Cationic paint binders based on polyether urethanes and process Cationic paint binders based on polyether urethanes and process

1990-07-02

1991-09-10

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

528 54, 528 61, 524591, 524839, C08G 1818, C08G 1808, C08G 1880

Patent

active

050474936

ABSTRACT:
Cationic paint binders based on polyether urethanes are formed by selective reaction of one NCO-group of a diisocyanate which contains NCO-groups of different reactivities with the primary hydroxyl groups of a polyhydroxypolyether in the presence of 1,4-diazabicyclo-2,2,2-octane (DABCO) as catalyst, and subsequently reacting the remaining NCO-group of the diisocyanate with the secondary amine. The binders which are largely free of low molecular basic by-products are used for formulating paints, particularly cathodically depositable electrodeposition paints, which are water-dilutable after protonation.

REFERENCES:
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patent: 4507431 (1985-03-01), Stutz et al.
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patent: 4608416 (1986-08-01), Schupp et al.
patent: 4623709 (1986-11-01), Bauriedel
patent: 4778845 (1988-10-01), Tschan et al.
patent: 4798879 (1989-01-01), Hannah et al.
Jouranl of Polymer Science: Polymer Letters Edition, vol. 23, pp. 509-515, 1985--Ono et al.

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