Starch-based corrugating adhesive having cross-linked polyvinyl

Details Starch-based corrugating adhesive having cross-linked polyvinyl Starch-based corrugating adhesive having cross-linked polyvinyl

1991-10-31

1993-05-18

Schofer, Joseph L.

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...

524503, 525 56, 525 58, C08L 6100

Patent

active

052122280

ABSTRACT:
Corrugating adhesives and premixes containing polyvinyl alcohol reacted with ketone-aldehyde resins are provided which exhibit stable viscosities and excellent adhesive properties. The premix formulations include PVA reacted with a selected resin, preferably in the absence of starch or borax, in order to yield pourable compositions which retain a stable viscosity over extended storage periods at ambient temperature. The premixes can be added to adhesive formulations including starch, alkali and borax to give corrugating adhesives which resist premature gelation and have good wet tack and adhesive properties.

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