Exxon Research and Engineering Company

Exxon Research & Engg.

Lutz E Jacob

Morris L Evans

Andre Lepert

Guy Wouters

Resins having a softening point from 10.degree. C. to 120.degree. C. especially 10.degree. C. to 80.degree. C. being a copolymer of a feed which is predominantly C.sub.5 olefines and diolefines and 10 to 60 wt. % of one or more monovinyl aromatic compounds are used as a tackifier for acrylic polymers or copolymers particularly in aqueous based pressure sensitive adhesives.

Tackifiers and their use in pressure sensitive adhesives

Petroleum resins having a softening point from 10.degree. C. to 80.degree. C. obtained from C.sub.5 olefins and diolefines and one or more monovinyl aromatic compounds which contain from 10 to 30 wt. % of the aromatic are useful as tackifiers for carboxylated styrene butadiene copolymer to produce pressure sensitive additives especially aqueous based adhesive when the resin is in the form of an emulsion which is also claimed.

Adhesive emulsion

Petroleum resins having a softening point from 10.degree. C. to 80.degree. C. obtained from C.sub.5 olefines and diolefines and one or more monovinyl aromatic compounds contain from 10 to 30 wt. % of the aromatic are useful as tackifiers in a combination with carboxylated styrene butadiene copolymer to produce aqueous based pressure sensitive adhesives.

Petroleum resins having a softening point from 10.degree. C. to 80.degree. C. obtained from C.sub.5 olefines and diolefines and one or more monovinyl aromatic compounds which contain from 10 to 30 wt. % of the aromatic are useful as tackifiers for carboxylated styrene butadiene copolymer to produce pressure sensitive additives especially aqueous based adhesive when the resin is in the form of an emulsion which is also claimed.

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Wezembeek-Oppem, Belgium

Lutz E Jacob