| 摘要 |
This invention pertains to water based pressure sensitive adhesive label and tape formulations containing tackifier dispersions, with greater than about 2 % by weight of non-neutralized low molecular weight carboxylic acid containing compounds, that show improved retention of adhesive properties in conditions of elevated temperature and relative humidity. The low molecular weight carboxylic acid containing compounds serve as scavenger species for migrating multivalent cations such as calcium that are liberated from paper facestocks and backings containing calcium carbonate fillers.
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