US4331576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-soluble, pressure-sensitive, hot-melt adhesives
Assignee: SWIFT ADHESIVES Inc A DE Corp
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Filing: 1981-01-29
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Granted: 1982-05-25
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Expires: 2001-01-29
Abstract
Abstract This invention relates to water-soluble, pressure-sensitive, hot-melt adhesives; and more specifically to hot-melt adhesives for labels and pressure-sensitive labels. The labels can be readily removed by application of water to the adhesive to facilitate peeling from the article; the adhesives are based upon certain vinyl pyrrolidone polymers.
Inventors
- 👤 Herman Colon
- 👤 Albert Maletsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:30
CPC Classifications
C; C09; C09J; C09J131/00; C09J131/02; C09J131/04; C09J139/00; C09J139/04; C09J139/06; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/28; C08L39/00; C08L39/04; C08L39/06; C08L93/00; C09J2301/00; C09J2301/30; C09J2301/304; Y; Y10; Y10S; Y10S428/00; Y10S428/913; Y10S428/914; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24934; Y10T428/28
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
A water-soluble, pressure-sensitive, hot-melt adhesive composition comprising: (a) 30 to 65 wt.% of total polymer components; said polymer components comprising 35 to 100 wt.% of water-sensitive vinyl pyrrolidone/vinyl acetate copolymers, any balance comprising polymers selected from the group consisting of vinyl pyrrolidone homopolymers, low amine number (10-28) polyamides, polyamides with acid numbers in the range 80 to 140 and ethylene/vinyl acetate copolymers containing 17 to 50 wt.% of vinyl acetate; (b) 35 to 50 wt.% of at least one free monobasic saturated or unsaturated fatty acid having an acid number higher than 137; and (c) the balance being selected from the group of tall oils, rosin acids, anti-oxidants, and plasticizers for said polymers.
Claim 2
Dependent Claim
113 words
A water-soluble, pressure-sensitive, hot-melt adhesive composition comprising: (a) 30 to 65 wt.% of total polymer components; said polymer components comprising 35 to 100 wt.% of water-sensitive vinyl pyrrolidone/vinyl acetate copolymers, any balance comprising polymers selected from the group consisting of vinyl pyrrolidone homopolymers, low amine number (10-28) polyamides, polyamides with acid numbers in the range 80 to 140 and ethylene/vinyl acetate copolymers containing 17 to 50 wt.% of vinyl acetate; (b) 35 to 50 wt.% of at least one free monobasic saturated or unsaturated fatty acid having an acid number higher than 137; and (c) the balance being selected from the group of tall oils, rosin acids, anti-oxidants, and plasticizers for said polymers.
Claim 3
Dependent Claim
23 words
A water-peelable label comprising a foil substrate coated on at least one surface thereof with the pressure-sensitive adhesive formulation according to claim 1.
Claim 4
Dependent Claim
18 words
An assembly consisting of an article having affixed thereto the water-peelable, pressure sensitive label according to claim 2.
Claim 5
Dependent Claim
28 words
An adhesive-joined assembly comprising a plurality of juxtaposed articles adhering to one another along respective juxtaposed surfaces of said articles by the adhesive formulation according to claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-24 | 1985-11-23 | 1986-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-24 | 1989-11-23 | 1990-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-24 | 1993-11-23 | 1994-05-25 | $7700.00 | Window Closed / Lapsed |