Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1982-12-23
1984-06-12
Schain, Howard E.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
525495, 525498, 528129, 528142, 528146, 528147, 528153, 528155, 528156, 528157, 528162, 528163, 528164, 528165, C08G 810, C08G 1406, C08G 1408
Patent
active
044542984
ABSTRACT:
A granular or powdery resin which is a condensation product of a phenol and an aldehyde and optionally a nitrogen-containing compound having at least two active hydrogens, said granular or powdery resin being characterized by
(A) containing spherical primary particles and secondary particles resulting from the agglomeration of the primary particles, each of said particles having a particle diameter of 0.1 to 150 microns,
(B) having such a size that at least 50% by weight thereof can pass through a 100 Tyler mesh sieve,
(C) having a free phenol content, determined by liquid chromatography, of not more than 500 ppm, and
(D) having a methanol solubility (S) of more than 20% by weight when about 10 g of the resin is heated under reflux in 500 ml of substantially anhydrous methanol.
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Koyama Hiroaki
Shimizu Shigeo
Kanebo Ltd.
Schain Howard E.
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