Carrier resin for pigment pastes, and its preparation and use

Details Carrier resin for pigment pastes, and its preparation and use Carrier resin for pigment pastes, and its preparation and use

1989-07-26

1991-11-19

Welsh, Maurice J.

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 69, 524901, C09D 1700

Patent

active

050667580

ABSTRACT:
Carrier resin for pigment pastes, and its preparation and use
The invention relates to paste resins based on epoxide compounds, containing (a) specific quaternary ammonium groups, (b) OH groups and (c) isocyanate radicals which are bonded to the epoxy compound and of which at least 10 mol % are derived from a long-chain, monofunctional isocyanate having at least 8 carbon atoms, the average molecular weight (Mn) of these paste resins being 500 to 10,000. The invention furthermore relates to the preparation of these paste resins, to their use for pigment pastes and to these pigment pastes. Water-dilutable paints, in particular electrocoating paints which contain the pigment pastes according to the invention, give trouble-free surfaces and comparable film thicknesses, even on different substrates.

REFERENCES:
patent: 3936405 (1976-02-01), Sturni et al.
patent: 4007154 (1975-08-01), Schimmel et al.
patent: 4327200 (1982-04-01), Leitner et al.
patent: 4431781 (1984-02-01), Paar

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