Fully saturated petroleum resin and hot melt pressure sensitive

Details Fully saturated petroleum resin and hot melt pressure sensitive Fully saturated petroleum resin and hot melt pressure sensitive

1986-10-10

1987-12-22

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

525 98, 5253321, 5253328, C08F 1014

Patent

active

047147490

ABSTRACT:
This invention relates to pressure sensitive adhesive formulations which include a saturated midblock thermoplastic elastomer such as a block copolymer of polystyrene and hydrogenated polydiene such as Kraton.RTM. G and a fully saturated tackifying resin derived from petroleum feedstock polymerized in the presence of aluminum chloride and having a Mn ranging from 400 to 800, a softening point of 40.degree. to 70.degree. C. and a glass transition temperature less than 45.degree. C. whereby the adhesive formulations have a rolling ball tack of less than 10 cm., a 180.degree. peel of from 1 to 4 pounds per inch, a 90.degree. quick stick of from 0.5 to 2.0 pounds per inch and a Polyken probe tack of higher than 400 g/cm.sup.2 with a formulation containing 100 to 180 phr of the saturated tackifying resin.

REFERENCES:
patent: 3325430 (1967-06-01), Grasley
patent: 3554940 (1971-01-01), Arakawa et al.
patent: 4011387 (1977-03-01), Curts et al.
patent: 4038346 (1977-07-01), Feeney
patent: 4113930 (1978-09-01), Moczygemba
patent: 4157363 (1979-06-01), Hepworth
patent: 4286077 (1981-08-01), St. Clair et al.

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