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US 4,289,666 AGranted
Adhesive correction composition and method of use
AssigneeInternational Business Machines Corporation
InventorsFred M. Creekmore, Dorothy J. Kennair, Benjamin F. Livingston, James F. Martone, Joseph J. Sabad
Life of this patent
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Abstract
Low tack pressure sensitive compositions containing polyethylene, a tackifier, an isobutylene polymer, a copolymer of ethylene and/or propylene and a monoethylenically unsaturated ester and a carboxylic acid and/or ester thereof and use thereof to remove erroneously typed images from a substrate.
Claims31
A low tack pressure sensitive composition comprising:
- (a) about 15-35% by weight of polyethylene;
- (b) about 20-65% by weight of a hydrocarbon tackifying polymer;
- (c) about 7-25% by weight of a tacky semi-solid isobutylene polymer having a viscosity average molecular weight (FLORY) of at least about 40,000;
- (d) about 10-20% by weight of a copolymer of an olefin selected from the group of ethylene, propylene, or mixtures thereof;
- and a monoethylenically unsaturated ester wherein the copolymer contains about 18 to about 40% by weight of said ester;
- and
- (e) about 0.5 to about 5% by weight of a nonvolatile carboxylic acid, or ester thereof or mixture thereof.
4 more elements
Dependencies are inferred from the claim text.