A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aromatic polyaldehyde selected from 1,3-benzenedicarboxaldehyde, 1,4-benzenedicarboxaldehyde and mixtures of these compounds, the rubber composition having a nominal secant modulus at 10% elongation, measured according to standard ASTM D 412, 1998, of greater than or equal to 25 MPa.

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aromatic polyaldehyde selected from 1,3-benzenedicarboxaldehyde, 1,4-benzenedicarboxaldehyde and mixtures of these compounds, the rubber composition having a nominal secant modulus at 10% elongation, measured according to standard ASTM D 412, 1998, of greater than or equal to 25 MPa.

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aromatic polyaldehyde selected from 1,3-benzenedicarboxaldehyde, 1,4-benzenedicarboxaldehyde and mixtures of these compounds, the rubber composition having a nominal secant modulus at 10% elongation, measured according to standard ASTM D 412, 1998, of greater than or equal to 25 MPa.

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aromatic polyaldehyde selected from 1,3-benzenedicarboxaldehyde, 1,4-benzenedicarboxaldehyde and mixtures of these compounds.

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aromatic polyaldehyde selected from 1,3-benzenedicarboxaldehyde, 1,4-benzenedicarboxaldehyde and mixtures of these compounds.

A rubber composition comprises at least one phenol/aldehyde resin based on at least one aromatic polyphenol comprising at least one aromatic ring bearing at least two hydroxyl functions in the meta position relative to one another, the two positions ortho to at least one of the hydroxyl functions being unsubstituted, and at least one aromatic polyaldehyde selected from 1,3-benzenedicarboxaldehyde, 1,4-benzenedicarboxaldehyde and mixtures of these compounds.

The rubber composition of the present invention is prepared by mixing a rubber component (A), zinc oxide (B), and a co-condensate (C) having a softening point of 150 C. or lower and containing a p-tert-butylphenol-derived constituent unit represented by the following formula (1), an o-phenylphenol-derived constituent unit represented by the following formula (2) and a resorcinol-derived constituent unit represented by the following formula (3), wherein the nitrogen adsorption specific surface area (N.sub.2SA) of the zinc oxide (B) measured according to the BET method is 6 m.sup.2/g or more and 110 m.sup.2/g or less, the mixing amount of the zinc oxide (B) is 5 parts by mass or more and 13 parts by mass or less based on 100 parts by mass of the rubber component (A), and the mixing amount of the co-condensate (C) is 0.1 parts by mass or more and 10 parts by mass or less based on 100 parts by mass of the rubber component (A). The co-condensate (C) is usable as a replacement for p-tert-octylphenol and p-nonylphenol, has a softening point lower than the maximum temperature in a rubber processing step, and has excellent dispersibility in rubber. ##STR00001##

The rubber composition of the present invention is prepared by mixing a rubber component (A), zinc oxide (B), and a co-condensate (C) having a softening point of 150 C. or lower and containing a p-tert-butylphenol-derived constituent unit represented by the following formula (1), an o-phenylphenol-derived constituent unit represented by the following formula (2) and a resorcinol-derived constituent unit represented by the following formula (3), wherein the nitrogen adsorption specific surface area (N.sub.2SA) of the zinc oxide (B) measured according to the BET method is 6 m.sup.2/g or more and 110 m.sup.2/g or less, the mixing amount of the zinc oxide (B) is 5 parts by mass or more and 13 parts by mass or less based on 100 parts by mass of the rubber component (A), and the mixing amount of the co-condensate (C) is 0.1 parts by mass or more and 10 parts by mass or less based on 100 parts by mass of the rubber component (A). The co-condensate (C) is usable as a replacement for p-tert-octylphenol and p-nonylphenol, has a softening point lower than the maximum temperature in a rubber processing step, and has excellent dispersibility in rubber. ##STR00001##

The present invention relates to an aqueous, solids-containing dipping bath composition for treating reinforcing inserts for rubber products comprising the following components or consisting of these components, (A) at least one blocked MDI mixture, the MDI mixture comprising MDI oligomers of formula (I), n being a whole number from 1 to 8, and MDI monomers; (B) at least one resorcinol-formaldehyde latex; and (C) possibly at least one additive, wherein the dipping bath composition is essentially free of epoxides.

##STR00001##

This invention relates to improved adhesion compositions and textile materials and articles treated therewith. The improved adhesion composition comprises a non-crosslinked resorcinol-formaldehyde and/or resorcinol-furfural condensate (or a phenol-formaldehyde condensate that is soluble in water), a rubber latex, and an aldehyde component such as 2-furfuraldehyde. The composition may be applied to textile substrates and used for improving the adhesion between the treated textile substrates and rubber materials. End-use articles that contain the treated textile-rubber composite include, without limitation, automobile tires, belts, and hoses as well as printing blankets.