Modified novolaks

Details Modified novolaks Modified novolaks

C - Chemistry, Metallurgy

08

G

400/1106, 117/18

C08G 8/30 (2006.01) C08G 8/34 (2006.01) C08L 61/14 (2006.01)

Patent

CA 1338565

Modified novolaks based on phenols which are tri- functional with respect to formaldehyde and contain, as modifying components, terpenes and ethylenically unsaturated carboxylic acids or derivatives of these compounds are disclosed. The weight ratio of the terpenes and the ethylenically unsaturated carboxylic acids or derivatives thereof is in the range from 98.5:2.5 to 2.5:98.5 and the weight ratio between the phenolic component and the sum of the modified components is in the range from 95:5 to 5:95. The modified novolaks have a melting point greater than 45°C. The modified novolaks are prepared by admixing necessary amounts of the modifying components with non-modified novolaks at temperatures between 80 and 300°C. The modified novolaks are useful as reinforcing resins for rubber and elastomers, as tackifying agents for rubber, as binders for friction linings, curable molding compositions, impregnants, coatings, paints and binders for finely divided inorganic substrates.

615112

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