Pressure sensitive adhesive and process

Details Pressure sensitive adhesive and process Pressure sensitive adhesive and process

1977-08-08

1979-12-18

Bleutge, John C.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 5, 260 293, 260 27BB, 260 297D, 525185, 427207B, C09J 312, C09J 314

Patent

active

041794150

ABSTRACT:
A water based rubber resin pressure-sensitive adhesive produced by mixing a high solids resin solution with an isoprene containing latex together with a small amount of carboxylation at a pH of at least about 8. The tackifier resin is added to the rubber latex in a high solids resin solution in an organic solvent. Preferably this solution contains a small amount of a polar solvent such as isopropyl alcohol. The carboxylation may be derived either from using acarboxylated latex or from using a carboxylated resin in the resin solution, or a combination of both of these. The resin solution is dispersed in the water system of the latex in a finely divided state. This preferably is accomplished by adding the resin solution to the latex system slowly with high shear agitation.

REFERENCES:
patent: 3103858 (1963-09-01), Lauren
patent: 3412061 (1968-11-01), Drukker
patent: 3625807 (1971-12-01), Beemer
patent: 3644251 (1972-02-01), Wilhelmi

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