| CPC C09J 11/06 (2013.01) [B60C 9/0042 (2013.01); B60C 9/005 (2013.01); C09J 11/04 (2013.01); C09J 139/08 (2013.01); D02G 3/02 (2013.01); D02G 3/286 (2013.01); D02G 3/48 (2013.01); D06B 3/04 (2013.01); D06M 11/60 (2013.01); D06M 13/11 (2013.01); D06M 13/152 (2013.01); D06M 13/395 (2013.01); D06M 15/3562 (2013.01); C08K 3/28 (2013.01); C08K 5/13 (2013.01); C09J 2301/408 (2020.08); D06M 2101/32 (2013.01); D06M 2200/00 (2013.01); D10B 2331/04 (2013.01); D10B 2505/022 (2013.01)] | 13 Claims |

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1. An adhesive composition comprising a naturally occurring acid, a nitrogen compound, and a latex,
wherein a relative viscosity measured at room temperature using an Ubbelohde viscometer satisfies the range of 2.30 to 3.00,
wherein the naturally occurring acid comprises a naturally occurring tannic acid, which contains 5 to 50 parts by weight based on 100 parts by weight of the latex,
wherein the nitrogen compound includes at least one selected from the group consisting of ammonia (NH), aniline, trimethylamine, methylamine, dimethylamine, and ethylamine, which contains 0.5 to 25 parts by weight based on 100 parts by weight of the latex.
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