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...
Patent
1985-11-07
1986-10-28
Welsh, Maurice J.
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...
252182, 4273855, 4273897, 524591, 524872, 524873, 524874, C08L 7504
Patent
active
046199667
ABSTRACT:
The present invention is directed to a process for the production of water- and solvent-resistant coated substrates by coating heat-resistant substrates with a solution or dispersion of an anionic group-containing polyisocyanate addition product in an aqueous solvent or dispersant and subsequently thermally treating the coating at a temperature of about 60.degree. to 200.degree. C., with evaporation or vaporization of the solvent or dispersant and simultaneous crosslinking of the polyisocyanate addition product which has been applied to the substrate, characterized in that incorporated anionic structural units corresponding to the formula ##STR1## are used in a quantity of about 5 to 1000 milliequivalents per 100 g of solids and the solids are based on reaction products of organic polyisocyanates with salts of cyanamide and bases selected from ammonia, primary and secondary amines having a minimum pKb value of 3.1, tertiary amines and mixtures thereof. The present invention also relates to the aqueous solutions or dispersions of anionically-modified polyisocyanate addition products.
REFERENCES:
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patent: 3479310 (1969-11-01), Dieterich et al.
patent: 3480592 (1969-11-01), Dieterich et al.
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patent: 3756992 (1973-09-01), Dieterich
patent: 3905929 (1975-09-01), Noll
patent: 4465825 (1984-08-01), Lin
Polymer Science Technology, "New Polymers Prepared from N-Cyanourea Compounds", Shiow C. Lin, Author, 1984, vol. 25, pp. 103-112.
Angew. Chem. 82, (1970) International Edition.
Dhein Rolf
Hajek Manfred
Kuchenmeister Rolf
Muller Hanns P.
Schafer Walter
Bayer Aktiengesellschaft
Gil Joseph C.
Harsh Gene
Roy Thomas W.
Welsh Maurice J.
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