High efficiency stable aqueous resoles

Details High efficiency stable aqueous resoles High efficiency stable aqueous resoles

1975-03-10

1977-06-07

Ziegler, J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 57R, 260 57A, 260 57C, C08L 6106

Patent

active

040283674

ABSTRACT:
High efficiency stable aqueous 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.

REFERENCES:
patent: 2593926 (1952-04-01), Simons
patent: 3206412 (1965-09-01), Kirkpatrick et al.

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