Formaldehyde-free insolubilizers for binders for paper coating c

Details Formaldehyde-free insolubilizers for binders for paper coating c Formaldehyde-free insolubilizers for binders for paper coating c

1983-02-28

1984-09-11

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...

106146, 106148, 106213, 106214, 428505, 428513, 428530, 524597, 525164, 525509, 528245, 564 60, C08L 6124, C08G 1236

Patent

active

044710879

ABSTRACT:
A highly efficient formaldehyde-free coating composition insolubilizer is prepared by reacting about 3 moles of glyoxal with 1 mole of urea resulting in a formation of a low molecular weight oligomer in a yield of 95-96%. The molar ratio of glyoxal to urea is very critical in obtaining the highest efficiency and is kept within narrow limits. The coating compositions of the present invention possess 2 till 4 times higher wet-rub resistance than the prior art compositions.

REFERENCES:
patent: 3869296 (1975-03-01), Kelly, Jr. et al.
patent: 3917659 (1975-11-01), Glancy et al.
patent: 4284758 (1981-08-01), North
patent: 4343655 (1982-08-01), Dodd et al.

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