Phenol-hcho-urea resin for a sizing composition, a process for i

Details Phenol-hcho-urea resin for a sizing composition, a process for i Phenol-hcho-urea resin for a sizing composition, a process for i

1984-11-19

1987-05-05

Schain, Howard E.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

524575, 524596, 4273898, 427421, 428361, 428375, 428392, 525504, C08G 1408

Patent

active

046634193

ABSTRACT:
A condensation product of phenol, formaldehyde and urea condensed in the presence of a basic catalyst, said condensation product being a liquid and having a free phenol content below 0.5%, a free formaldehyde content below 3%, expressed by weight based on the total weight of liquid, and a dilutability, measured at 20.degree. C., of at least equal to 1000%.

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