Stock material or miscellaneous articles – Layer or component removable to expose adhesive – Halogen containing compound
Patent
1976-09-13
1977-08-02
Lesmes, George F.
Stock material or miscellaneous articles
Layer or component removable to expose adhesive
Halogen containing compound
156331, 156332, 260 27R, 260859R, 260859PV, 260873, 260899, 260901, 423510, 423520, 428138, 428423, 428483, B32B 2726, B32B 2730
Patent
active
040397050
ABSTRACT:
There are provided curable anaerobic pressure sensitive adhesive stocks in the form of sheets and tapes in which the adhesive is contained between two differential release surfaces. This construction permits total pressure sensitive adhesive transfer to a substrate which is to be firmly secured to another substrate upon the exclusion of oxygen and initiation of cure of the anaerobic resin.
The compositions are those, based on the total weight of the composition, containing from about 4 to about 40 percent by weight of a first anaerobic resin having a viscosity up to about 1000 cps at 25.degree. C from 0 to about 80 percent by weight of a second anaerobic resin having a viscosity greater than about 1000 cps at 25.degree. C, from about 9 to 95 percent by weight of a thermoplastic resin system, from 0 to about 10 percent of a latent accelerator and about 0.1 to about 10 percent of a hydroperoxide catalyst, the composition having static shear at 0.25 in.sup.2 at a load of 250 gram greater than 10 minutes, a Polyken tack of greater than 700 grams, a loop tack greater than 1.5 lbs/in.sup.2 and a 180.degree. peel greater than 2 lbs. An external primer may be provided to accelerate cure.
REFERENCES:
patent: 3300547 (1967-01-01), Gorman
patent: 3425988 (1969-02-01), Gorman
patent: 3591438 (1971-07-01), Toback et al.
patent: 3625875 (1971-12-01), Fruenglass et al.
patent: 3632386 (1972-01-01), Hurst
patent: 3639500 (1972-02-01), Muny et al.
patent: 3658624 (1972-04-01), Lees
Douek Maurice
Hauser Martin
Malofsky Bernard M.
Schmidt Gustav A.
Avery International Corporation
Lesmes George F.
Loctite Corporation
Roche R. J.
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