Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From aldehyde or derivative thereof as reactant
Patent
1988-11-28
1990-10-02
Foelak, Morton
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From aldehyde or derivative thereof as reactant
528254, 528259, 524597, 524598, C08G 1240
Patent
active
049608568
ABSTRACT:
This invention relates to an aqueous solution of water soluble urea-formaldehyde precondensate having a formaldehyde-to-urea (F/U) molar ratio of between about 1.20:1.0 and 1.70:1.0 and to a method for making the precondensate solution by reacting urea and formaldehyde in the presence of acid catalyst in aqueous solution having a pH between about 3.5 and 4.25; then, in neutral to slightly basic solution.
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Acquah Sam A.
Foelak Morton
Georgia-Pacific Corporation
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