High efficiency aqueous resole solutions being stable to crystal

Details High efficiency aqueous resole solutions being stable to crystal High efficiency aqueous resole solutions being stable to crystal

1975-03-10

1976-05-11

Czaja, Donald E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 293, 260 515, 260839, 260840, 428290, C08L 8900

Patent

active

039562050

ABSTRACT:
High efficiency stable aqueous emulsifiable resoles which contain low concentration of free phenol and free formaldehyde and cause substantially less pollution of the atmosphere than prior art resins. The resoles are prepared by a two-stage reaction which controls the molecular weight, water tolerance and the ratio of methylolated 2,2'-, 2,4'- and 4,4'-dihydroxydiphenylmethanes. Stability is promoted by inhibition of the crystallization of bis(4-hydroxy-3,5-dimethylolphenyl) methane.

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