Heat-setting mixtures which have a long shelf life and comprise

Details Heat-setting mixtures which have a long shelf life and comprise Heat-setting mixtures which have a long shelf life and comprise

1983-07-28

1985-06-25

Cockeram, Herbert S.

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 45, 528 73, 528902, 528 44, 528 85, C08G 1872, C08G 1848, C08G 1862

Patent

active

045255709

ABSTRACT:
In heat-setting mixtures which have a long shelf life at room temperature and comprise a polyisocyanate and one or more compounds which are reactive toward isocyanate groups, the polyisocyanate is present, in the form of discrete particles, in a saturated or unsaturated amino-, hydrazide-, mercaptan- and/or carboxyl-containing polymer, polycondensate or polyadduct which has a functionality of more than 1 and some of which can be replaced by a polyol, and the polyisocyanate particles are deactivated at their surface so that from 0.01 to 20 equivalent percent of the total amount of isocyanate groups present is deactivated. These mixtures are useful as coating compositions, adhesives and sealant materials, particularly as undersealants for motor vehicles.

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Vieweg/Hochtlen, "Kunststoff-Handbuch", Band VII, Polyurethane, (Carl Hanser Verlag Munchen, 1966), pp. 11, et seq.
M. Hartmann, R. Dowbenko, U. T. Hockswender, Organic Coatings and Applied Polymer Science, vol. 46, 1982, pp. 429-432.
D. Weinmann, "Beschichtungen mit Lacken und Kunststoffen", Verlag W. A. Colomb, Stuttgart, 1967, pp. 103 et seq.

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