Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1980-11-24
1985-02-19
Gallagher, John J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
156334, 524272, 524487, 525222, C08L 9300
Patent
active
045006610
ABSTRACT:
A novel adhesive composition effective in bonding low-energy plastic surfaces to each other which provides a tensile lap shear strength in excess of about 520 pounds per square inch gauge which comprises (1) an ethylene-vinyl ester copolymer having from about four to about 30 weight percent of a vinyl ester and a melt index of about 0.5 to about 75; (2) a tackifier selected from the group consisting of (a) a rosin, (b) a rosin ester, (c) a terpene resin, (d) a terpene-phenolic resin and (e) a rosin-modified phenolic resin; and (3) a polyethylene wax having a molecular weight of about 750 to about 3000, a penetration of about 0.25 to about 1.5, a density of about 0.93 to about 0.97, a melting point of at least about 110.degree. C. and a linearity of at least about 70 percent, said novel adhesive composition having a Ring and Ball softening point of at least about 110.degree. C.
REFERENCES:
patent: 2772247 (1956-11-01), Schroeder
patent: 3390035 (1968-06-01), Sands
patent: 3689334 (1972-09-01), Dermody
patent: 3745054 (1973-07-01), Smedberg
patent: 3896069 (1975-07-01), Kosaka et al.
patent: 3926878 (1975-12-01), Shimizu et al.
patent: 4167433 (1979-09-01), Lakshmanan
"Waxes", Encyclopedia of Polymer Science and Technology, vol. 14, p. 777, .COPYRGT.1971.
Gallagher John J.
Gulf Oil Corporation
Keith Deane E.
Stine Forrest D.
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