Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1992-02-04
1993-07-27
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
524276, 524475, 524487, 524488, 523122, C09D 1000, C09D13104
Patent
active
052311180
ABSTRACT:
The invention relates to a pressure-activatible correcting tape, which has a conventional carrier and a lift-off layer for removing typed or printed type images, the lift-off layer containing a wax, a binder and optionally further additives. This correcting tape is characterized in that the lift-off layer contains approximately 5 to 35% by weight of butyl rubber, approximately 30 to 90% by weight of wax and approximately 0.1 to 5% by weight of a dispersant having a dispersing action in an aqueous medium for the aforementioned substances. The lift-off layer can be produced by means of an aqueous coating liquid, which is environmentally advantageous compared with organic dispersants. This correcting tape can be used without restriction and independently of the type of typewriter.
REFERENCES:
patent: 3924728 (1975-12-01), Brown et al.
patent: 4096104 (1978-06-01), Spain et al.
patent: 4289670 (1981-09-01), Creekmore et al.
Hawley's Condensed Chemical Dictionary, llth Ed., 1987, p. 491, Ethylene-vinyl Acetate Copolymer.
Abbott Christine
Hogarth Ian
Scott Andrew
Wilkinson Robert I.
Caribonum Limited
Dubno Herbert
Guarriello John J.
Michl Paul R.
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