Dicyandiamide-formaldehyde condensates modified with urea and pr

Details Dicyandiamide-formaldehyde condensates modified with urea and pr Dicyandiamide-formaldehyde condensates modified with urea and pr

1981-12-08

1983-05-10

Pertilla, Theodore E.

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...

1621643, 524843, 528250, 528263, C08L 6124

Patent

active

043830773

ABSTRACT:
Disclosed are novel water-soluble, thermosettable resinous compositions derived by reacting a precondensate of dicyandiamide, formaldehyde, a salt of a water-soluble polyaminopolyamide and an ammonium salt with urea and then condensing the reaction product with additional formaldehyde. The resinous compositions are cationic and have particular utility in the manufacture of paper sized with cellulose reactive sizing agents such as ketene dimer sizing agents.

REFERENCES:
patent: 2973239 (1961-02-01), Gortvai
patent: 3594272 (1971-07-01), Shen et al.
patent: 3840486 (1974-10-01), Dumas
patent: 3914155 (1975-10-01), Horowitz
patent: 3951921 (1976-04-01), Espy et al.

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