Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1988-01-12
1990-02-27
Kight, John
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528140, 528143, 528162, 528163, 528230, 528234, 528256, 528257, 528247, 525480, 525485, 525486, 525495, 525498, 525505, 524541, C08G 810
Patent
active
049045164
ABSTRACT:
A process for preparing a water soluble phenol-formaldehyde resole resin having improved storage stability employs a calcium compound to catalyze the condensation reaction which occurs under basic conditions. Sulfamic acid is used to neutralize the resole solution, yielding a soluble calcium salt which will not settle out of the solution or clog transfer lines or spray nozzles as may a calcium salt precipitated during the neutralization. Glass fiber insulation produced using a binder prepared with the aqueous resole solution shows enhanced thickness recovery and lower odor potential.
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R. W. Martin, The Chemistry of Phenolic Resins (John Wiley & Sons, Inc. New York 1956), pp. 88-97.
Acquah Samuel A.
Kight John
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