The present disclosure provides: an adhesive composition capable of realizing good adhesion even when neither resorcin nor formalin is included therein; and a rubber-organic fiber cord composite and a tire, which are excellent in adhesion between rubber and organic fiber cords and make a low impact on the environment. Specifically, the present invention provides an adhesive composition for an organic fiber cord, comprising therein: an epoxy compound (A); a compound (B) having an amide group and an amino group per molecule; and rubber latex (C). Further, the present disclosure provides a rubber-organic fiber cord composite, comprising a rubber member and an organic fiber cord, wherein at least a portion of the organic fiber cord is coated with the adhesive composition described above.

A latex of a highly saturated nitrile rubber wherein the highly saturated nitrile rubber contains α,β-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt %, has an iodine value of 120 or less, and has a weight average molecular weight of solubles in chloroform of 100,000 or less, and when removing volatiles contained in the latex and making a film of the highly saturated nitrile rubber, a loss tangent tan δ.sub.(50° C.) at 50° C. of the film is 0.3 to 0.6 and a complex torque S* at the time of 100% shear strain at 100° C. of the film is 20 dNm or less, and an adhesive composition containing the latex are provided.

A latex of a highly saturated nitrile rubber wherein the highly saturated nitrile rubber contains α,β-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt %, has an iodine value of 120 or less, and has a weight average molecular weight of solubles in chloroform of 100,000 or less, and when removing volatiles contained in the latex and making a film of the highly saturated nitrile rubber, a loss tangent tan δ.sub.(50° C.) at 50° C. of the film is 0.3 to 0.6 and a complex torque S* at the time of 100% shear strain at 100° C. of the film is 20 dNm or less, and an adhesive composition containing the latex are provided.

A latex including: a nitrile rubber containing an α,β-ethylenically unsaturated nitrile monomer unit in a content of 8 to 50 wt % and an α,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit in a content of 1 to 10 wt %, and having an iodine value of 120 g/100 g or less; and a benzisothiazoline-based compound represented by the following general formula (1), wherein the content of the benzisothiazoline-based compound is 50 ppm by weight or more, with respect to the nitrile rubber, and a redox potential of the latex is 80 to 800 mV. ##STR00001##
In the general formula (1) mentioned above, R.sup.1 represents a hydrogen atom, or a substituted or unsubstituted organic group, R.sup.2 each independently represents a hydrogen atom, or a substituted or unsubstituted organic group, and “n” represents an integer of 0 to 4.

A latex including: a nitrile rubber containing an α,β-ethylenically unsaturated nitrile monomer unit in a content of 8 to 50 wt % and an α,β-ethylenically unsaturated dicarboxylic acid monoester monomer unit in a content of 1 to 10 wt %, and having an iodine value of 120 g/100 g or less; and a benzisothiazoline-based compound represented by the following general formula (1), wherein the content of the benzisothiazoline-based compound is 50 ppm by weight or more, with respect to the nitrile rubber, and a redox potential of the latex is 80 to 800 mV. ##STR00001##
In the general formula (1) mentioned above, R.sup.1 represents a hydrogen atom, or a substituted or unsubstituted organic group, R.sup.2 each independently represents a hydrogen atom, or a substituted or unsubstituted organic group, and “n” represents an integer of 0 to 4.

A latex including: a nitrile rubber containing an ,-ethylenically unsaturated nitrile monomer unit in a content of 8 to 50 wt % and an ,-ethylenically unsaturated dicarboxylic acid monoester monomer unit in a content of 1 to 10 wt %, and having an iodine value of 120 g/100 g or less; and a benzisothiazoline-based compound represented by the following general formula (1), wherein the content of the benzisothiazoline-based compound is 50 ppm by weight or more, with respect to the nitrile rubber, and a redox potential of the latex is 80 to 800 mV.

##STR00001##

In the general formula (1) mentioned above, R.sup.1 represents a hydrogen atom, or a substituted or unsubstituted organic group, R.sup.2 each independently represents a hydrogen atom, or a substituted or unsubstituted organic group, and n represents an integer of 0 to 4.

A latex including: a nitrile rubber containing an ,-ethylenically unsaturated nitrile monomer unit in a content of 8 to 50 wt % and an ,-ethylenically unsaturated dicarboxylic acid monoester monomer unit in a content of 1 to 10 wt %, and having an iodine value of 120 g/100 g or less; and a benzisothiazoline-based compound represented by the following general formula (1), wherein the content of the benzisothiazoline-based compound is 50 ppm by weight or more, with respect to the nitrile rubber, and a redox potential of the latex is 80 to 800 mV.

##STR00001##

In the general formula (1) mentioned above, R.sup.1 represents a hydrogen atom, or a substituted or unsubstituted organic group, R.sup.2 each independently represents a hydrogen atom, or a substituted or unsubstituted organic group, and n represents an integer of 0 to 4.

A latex of a highly saturated nitrile rubber wherein the highly saturated nitrile rubber contains ,-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt %, has an iodine value of 120 or less, and has a weight average molecular weight of solubles in chloroform of 100,000 or less, and when removing volatiles contained in the latex and making a film of the highly saturated nitrile rubber, a loss tangent tan .sub.(50 C.) at 50 C. of the film is 0.3 to 0.6 and a complex torque S* at the time of 100% shear strain at 100 C. of the film is 20 dNm or less, and an adhesive composition containing the latex are provided.

A latex of a highly saturated nitrile rubber wherein the highly saturated nitrile rubber contains ,-ethylenically unsaturated nitrile monomer units in a ratio of 10 to 60 wt %, has an iodine value of 120 or less, and has a weight average molecular weight of solubles in chloroform of 100,000 or less, and when removing volatiles contained in the latex and making a film of the highly saturated nitrile rubber, a loss tangent tan .sub.(50 C.) at 50 C. of the film is 0.3 to 0.6 and a complex torque S* at the time of 100% shear strain at 100 C. of the film is 20 dNm or less, and an adhesive composition containing the latex are provided.

The present invention is in the field of an improved adhesive composition, use of said composition and products comprising said composition. The adhesive composition may be a one component and a two component adhesive, each component typically comprising various ingredients. The present adhesives are water-based dispersions.