Water inactivatable pressure sensitive adhesive

Details Water inactivatable pressure sensitive adhesive Water inactivatable pressure sensitive adhesive

C - Chemistry, Metallurgy

09

J

C09J 151/06 (2006.01) A61L 15/24 (2006.01) A61L 15/58 (2006.01) C09J 7/02 (2006.01) C09J 151/00 (2006.01)

Patent

CA 2088457

A novel polymeric pressure-sensitive adhesive formulation is provided comprised of a balanced hydrophilic/hydrophobic base polymer compounded with at least one water-soluble tackifying component. Upon contact of the pressure-sensitive adhesive with excess amounts of water, the water-soluble tackifying component is caused to separate from the base polymer, thus decreasing the ability of the base polymer to function as a pressure-sensitive adhesive. The adhesive may subsequently be easily removed from any substrate to which it has been applied.

L'invention concerne une nouvelle formulation adhésive autocollante, constituée d'un polymère de base équilibré, de type hydrophile/hydrophobe, associé à au moins un constituant collant hydrosoluble. Après contact de l'adhésif autocollant avec un excès d'eau, le constituant collant hydrosoluble se sépare du polymère de base, ce qui réduit la capacité du polymère de base à se comporter comme adhésif autocollant. L'adhésif peut par la suite être facilement détaché de tout substrat sur lequel il a été appliqué.

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