Cyanato-group-containing phenol resin

Details Cyanato-group-containing phenol resin Cyanato-group-containing phenol resin

1975-07-21

1977-05-10

Woodberry, Edward M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260838, C08L 6106

Patent

active

040227553

ABSTRACT:
A novel cyanato-group-containing phenol resin is produced by reacting a cyanogen halide in an inert organic solvent in the presence of a base with a phenol novolak comprising a mixture of polymers represented by the formula, ##STR1## WHEREIN, N IS 0 OR AN INTEGER OF 1 OR MORE; AND R's may be the same or different, and each R represents a hydrogen atom or a methyl group, and containing 50 % by weight or more in total of polymers having the above formula in which n is an integer of 1 to 3, the number average molecular weight of said novolak being at least 300 and less then 600. This phenol resin is suitable for use in the production of a cured resin having outstanding thermal properties.

REFERENCES:
chem. Absts: vol. 68 (1968) 30633e, "Cyanate Group-Containing Phenolic Resins," Farbenfabriken Bayer AG.
Chem. Absts: vol. 62 (1965) 16104f, "Cyanogen Bromide and an Acylating Agent;" Thyagarajan.
Chem. Absts: 72 (1970) 56233g; "Plastic Materials from Aromatic Cyanates and Poly-epoxides;" Farbenfabriken Bayer AG.

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