US3912675A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexo ink composition
Assignee: Sakata Inx Corp
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Filing: 1973-05-24
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Granted: 1975-10-14
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Expires: 1993-05-24
Abstract
Abstract A flexo ink composition suitable for use in printing on polyolefin sheets or polyolefin sheets containing an inorganic filler, comprising 5-35% by weight of acrylic resin and 5-20% by weight of at least one member selected from the group of natural resins consisting of copal, dammar and shellac as the resin component thereof.
Inventors
- 👤 Hiroshi Hoshi
- 👤 Sakae Sakakura
- 👤 Minoru Yoshida
- 👤 Yoshinobu Monden
- 👤 Fumio Ito
- 👤 Kaoru Fujita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:25
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
188 words
IN A FLEXO INK COMPOSITION AN ORGANIC SOLVENT SOLUTION OF A RESIN COMPONENT AS THE VECHICLE, WHEREIN THE AMOUNT OF SAID ORGANIC SOLVENT IS FROM 30 TO 60 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE FLEXO INK COMPOSITION, THE IMPROVEMENT WHICH COMPRISES: SAID RESIN COMPONENT CONSISTS ESSENTIALLY OF A. FROM 5 TO 375 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE FLEXO INK COMPOSITION, OF A COPOLYMER OF METHACRYLIC ACID ESTER AND ACRYLIC ACID, SAID COPOLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE OF 30,000 TO 300,000 AND SECOND ORDER TRANSITION TEMPERATURE IN THE RANGE OF 20* TO 150*C, SAID METHACRYLIC ACID ESTER BEING SELECTED FROM THE GROUP CONSISTING OF ETHYL METHACRYLATE, BUTYL METHACRYLATE, ISOBUTYL METHACRYLATE, NHEXYL METHACRYLATE, N-OCTYL METHACRYLATE, LAURYL METHACRYLATE AND STEARYL METHACRYLATE, AND B. FROM 5 TO 20 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE FLEXO INK COMPOSITION, OF DAMMAR HAVING AN ACID VALUE IN THE RANGE OF 20 TO 55 AND SOFTENING POINT IN THE RANGE OF 55* TO 110*C, SAID FLEXO INK COMPOSITION POSSESSING IMPROVED ADHESION TO UNTREATED POLYOLEFIN SHEETS AND SO POLYOLEFIN SHEETS FILLED WITH INORGANIC POWDER.
Claim 2
Dependent Claim
188 words
IN A FLEXO INK COMPOSITION AN ORGANIC SOLVENT SOLUTION OF A RESIN COMPONENT AS THE VECHICLE, WHEREIN THE AMOUNT OF SAID ORGANIC SOLVENT IS FROM 30 TO 60 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE FLEXO INK COMPOSITION, THE IMPROVEMENT WHICH COMPRISES: SAID RESIN COMPONENT CONSISTS ESSENTIALLY OF A. FROM 5 TO 375 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE FLEXO INK COMPOSITION, OF A COPOLYMER OF METHACRYLIC ACID ESTER AND ACRYLIC ACID, SAID COPOLYMER HAVING A MOLECULAR WEIGHT IN THE RANGE OF 30,000 TO 300,000 AND SECOND ORDER TRANSITION TEMPERATURE IN THE RANGE OF 20* TO 150*C, SAID METHACRYLIC ACID ESTER BEING SELECTED FROM THE GROUP CONSISTING OF ETHYL METHACRYLATE, BUTYL METHACRYLATE, ISOBUTYL METHACRYLATE, NHEXYL METHACRYLATE, N-OCTYL METHACRYLATE, LAURYL METHACRYLATE AND STEARYL METHACRYLATE, AND B. FROM 5 TO 20 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE FLEXO INK COMPOSITION, OF DAMMAR HAVING AN ACID VALUE IN THE RANGE OF 20 TO 55 AND SOFTENING POINT IN THE RANGE OF 55* TO 110*C, SAID FLEXO INK COMPOSITION POSSESSING IMPROVED ADHESION TO UNTREATED POLYOLEFIN SHEETS AND SO POLYOLEFIN SHEETS FILLED WITH INORGANIC POWDER.
Claim 3
Dependent Claim
103 words
A flexo ink composition as claimed in claim 1, wherein said organic solvent is a mixture of at least two different solvents, one of said solvents being selected from the group consisting of methyl alcohol, ethyl alcohol, isopropyl alcohol, n-propyl alcohol, n-butyl alcohol, isobutyl alcohol, t-butyl alcohol, diacetone alcohol and benzyl alcohol, said one solvent being at least one third, by weight, of the total organic solvent, the balance of said organic solvent being at least one member selected from the group consisting of ethyl acetate, butyl acetate, toluene, xylene, ethylene glycol monoethyl ether, ethylene glycol monoethyl ether and ethylene glycol monobutyl ether.
Claim 4
Dependent Claim
47 words
A flexo ink composition as claimed in claim 2, in which the amount of A is from 15 to 25 percent by weight, and the amount of B is from 8 to 15 percent by weight, both percentages based on the weight of the flexo ink 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) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |