| abstract |
A rubber composition comprising vulcanizable natural or synthetic rubber and a sulfide resin produced by (1) reacting a component (A) with a componet (B), followed by reacting with a component (D), or (2) reacting a component (A) with a component (B), followed by reacting with a component (C) and a component (D) simultaneously or sequentially, and if desired reacting the resulting phenol resin with an acylating agent, the component (A) being a phenol compound of the following formula, and/or an acylated compound thereof, <IMAGE> wherein R1 and R2 are each a hydrogen atom, a hydroxyl, carboxyl, amino, C1-C18 alkyl, C3-C10 cycloalkyl, C3-C10 cycloalkenyl or C7-C12 aralkyl group or a phenyl group unsubstituted or substituted with at least one C1-C3 alkyl group, the component (B) being a sulfur chloride or sulfur, the component (C) being an aldehyde, and the component (D) being at lest one hydroxyaryl compound of the following formula, and/or an acylated compound thereof, <IMAGE> wherein R3 is a -OR6,-NHR6, -COOR6, -OCOR6, phenyl group unsubstituted or substituted with at least one C1-C3 alkyl, C1-C18 alkyl, C3-C10 cycloalkyl, C3-C10 cycloalkenyl or C7-C12 aralkyl group, and R4 and R5 are each a hydrogen atom, -OR6, -NHR6,-COOR6, -0COR6, phenyl group unsubstituted or substituted with at least one C1-C3 alkyl, C1-C18 alkyl, C3-C10 cycloalkyl, C3-C10 cycloalkenyl or C7-C12 aralkyl group in which R6 is a hydrogen atom or a C1-C4 alkyl group. |