Process for the manufacture of aqueous coating agents, the coati

Details Process for the manufacture of aqueous coating agents, the coati Process for the manufacture of aqueous coating agents, the coati

1996-06-19

1997-03-25

Michl, Paul R.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524539, 524839, 524840, 4273722, 4273855, C08J 300, C08K 320, C08L 7500, B05D 302

Patent

active

056145845

ABSTRACT:
A process for the manufacture of aqueous coating agents, obtained by mixing an aqueous dispersion of one or more water-dispersible or water-soluble binders that contain groups reactive with isocyanate with one or more polyisocyanates that are liquid or are present in liquid form as a result of the addition of organic solvents, as well as optionally pigments, fillers and/or customary lacquer additives, wherein an aqueous dispersion is used of one or more binders with a number-average molecular weight (Mn) of 1000 to 100,000, groups reactive with isocyanate equivalent to a hydroxyl number of 20 to 250 and an acid number of 10 to 100, whose acidic groups are at least partly neutralized by one or more polyamines with primary and/or secondary amino groups mixed with one or more tertiary monoamines, and the polyisocyanate that is liquid or present in liquid form is dispersed in this dispersion shortly before the use of the coating agents; and the coating agents obtained.

REFERENCES:
patent: 4066591 (1978-01-01), Scriven et al.
patent: 5194487 (1993-03-01), Jacobs
patent: 5280062 (1994-01-01), Blum et al.

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