US4070523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printable pressure-sensitive adhesive tapes
Assignee: MYSTIK TAPE Corp AN IL CORP
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Filing: 1976-03-25
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Granted: 1978-01-24
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Expires: 1996-03-25
Abstract
Abstract Polyketone resins are used as an ingredient of the release coating for a flexible pressure-sensitive tape. The release coatings are printable and at the same time remain effective as release agents due to the presence of the polyketone resins. The polyketone resins are blended with a monomeric or polymeric release agent and an elastomeric or resinous film former to give the improved properties.
Inventors
- 👤 Alfred Blum
- 👤 Charles Bartell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:04
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/20; C09J7/22; C09J7/25; C09J7/255; C09J7/201; C09J7/24; C09J7/241; C09J7/243; C09J2423/00; C09J2423/005; C09J2429/00; C09J2429/005; C09J2431/00; C09J2431/005; C09J2461/00; C09J2461/005; C09J2467/00; C09J2467/005; C09J2475/00; C09J2475/005; C09J2483/00; C09J2483/005; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2839; Y10T428/2848; Y10T428/31504; Y10T428/31942
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A pressure-sensitive adhesive tape comprising a backing of paper, cloth, film, or foil material, a pressure-sensitive adhesive applied to one side of said backing, and a release coating composition applied to the other side of said backing, the release coating composition being a blend of about 10-30 parts by weight of an organic release agent, about 20-70 parts of a film former, and from 15-40 parts of a polyketone resin to provide printability.
Claim 2
Dependent Claim
73 words
A pressure-sensitive adhesive tape comprising a backing of paper, cloth, film, or foil material, a pressure-sensitive adhesive applied to one side of said backing, and a release coating composition applied to the other side of said backing, the release coating composition being a blend of about 10-30 parts by weight of an organic release agent, about 20-70 parts of a film former, and from 15-40 parts of a polyketone resin to provide printability.
Claim 3
Dependent Claim
27 words
The pressure-sensitive tape of claim 1 wherein the film former is a combination of a polypropylene and glycerol terephthalate polyester resin and a vinyl acetate/vinyl alcohol resin.
Claim 4
Dependent Claim
24 words
The pressure-sensitive tape of claim 1 wherein an overcoat of release agent is applied to the already established release coating composition on said backing.
Claim 5
Dependent Claim
41 words
The pressure-sensitive tape of claim 1 wherein said organic release agent is selected from the group consisting of poly-N-acyl-imines such as octadecyl urea of polyethylemeimine, octadecyl polyvinyl carbamate, Werner chrome complex compounds such as stearato chromic chloride and mixtures of these.
Claim 6
Dependent Claim
48 words
The pressure-sensitive tape of claim 2 wherein the polyketone resin has a specific gravity of 1.14, a softening point of 97° C. and weighs 9.5 pound per gallon and is present in the amount of 18 - 20 parts by weight per hundred parts of release coating composition.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |