Rubber cement compositions

Details Rubber cement compositions Rubber cement compositions

1974-10-30

1977-02-08

Bleutge, John C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

156331, 260 54, 428460, C08L 6110, C08L 6112

Patent

active

040072339

ABSTRACT:
Rubber cement compositions which consist of rubbers and multi- (three and more) functional phenol-aldehyde modified bifunctional phenol resins, which are made by first obtaining the bifunctional phenolic resin by condensing 1 mole of bifunctional phenol with 0.5 to 3.0 moles of aldehydes in the presence of an alkaline catalyst, and then co-condensing 0.05 to 2.5 moles of multifunctional (three and more) phenols against 1 mol of the bifunctional phenols in the above-mentioned resin in the presence of an acidic catalyst, said co-condensed resin having a number average molecular weight of 700 - 1900, a resin melting point of 80.degree. -160.degree. C, being curable and also being soluble in aromatic hydrocarbon solvents.

REFERENCES:
patent: 2614096 (1952-10-01), Spahr
patent: 3478127 (1969-11-01), Petersen
patent: 3492263 (1970-01-01), Kreibich et al.
patent: 3578613 (1971-05-01), Tai
patent: 3586735 (1971-06-01), Giller
patent: 3660202 (1972-05-01), Edington et al.
patent: 3843484 (1974-10-01), Kamiyoshi et al.

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