Patent US3962397A successfully refreshed from Google Patents.
US3962397A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of reflexible pigment
Assignee: Oike and Co Ltd
•
Filing: 1974-11-06
•
Granted: 1976-06-08
•
Expires: 1994-11-06
Abstract
Abstract A process for preparing a reflexible pigment consisting of a metal deposition layer and resinous coating layer on at least one side thereof and having a length and width of 0.1 to 500 μ, a thickness of 0.1 to 4 μ and a true specific gravity of 1 to 2, which is characterized by providing on a base film a metal leaf consisting of a metal deposition layer and a resinous coating layer on at least one side thereof, peeling the metal leaf out of the base film by elongating the base film and crushing up the metal leaf. According to the process, a reflexible pigment in a dry state can be prepared with a remarkable simplicity and a high efficiency. The coating composition including the pigment prepared by the process has improved properties such as beautifulness, reflection property, application property, weather-proofing and abrasion resistance, and is useful for printing ink, writing ink or paint.
Inventors
- 👤 Hiroshi Narui
- 👤 Ikuo Akune
- 👤 Terumi Shinohara
- 👤 Masao Numa
- 👤 Yosiya Kobiki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:51
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/20; C09C; C09C1/00; C09C1/62; C01; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/62; C01P2004/80
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
99 words
A process for making a light reflective pigment which comprises a. coating a base film with a resinous material; b. depositing a metal by vapor deposition on the coating; c. elongating only the base film at least 1% in air to peel the metal coated with the resinous material from the base film; and d. crushing the resulting coated metal leaf into pieces having a length and width within the range of about 0.1 to about 500 μ each, a thickness of about 0.1 to about 4 μ and a true specific gravity of about 1 to about 2.
Claim 2
Dependent Claim
99 words
A process for making a light reflective pigment which comprises a. coating a base film with a resinous material; b. depositing a metal by vapor deposition on the coating; c. elongating only the base film at least 1% in air to peel the metal coated with the resinous material from the base film; and d. crushing the resulting coated metal leaf into pieces having a length and width within the range of about 0.1 to about 500 μ each, a thickness of about 0.1 to about 4 μ and a true specific gravity of about 1 to about 2.
Claim 3
Dependent Claim
20 words
The process of claim 1, wherein said elongating ratio of the base film is from about 1 to about 20%.
Claim 4
Dependent Claim
27 words
The process of claim 2, wherein said elongating ratio of about 1 to about 20% is achieved by heating the base film up to an elevated temperature.
Claim 5
Dependent Claim
20 words
The process of claim 3, wherein said elevated temperature is an approximate glass transition temperature of the base film employed.
Claim 6
Dependent Claim
35 words
The process of claim 1, wherein said base film is a member selected from the group consisting of films made of polyethylene, polypropylene, polyvinyl alcohol, polytetrafluoroethylene, polyester, polyamide polyvinyl chloride, polycarbonate, cellulose acetate, regenerated cellulose.
Claim 7
Dependent Claim
37 words
The process of claim 1 wherein the metal coated base film from step (b) is coated with a resinous material prior to step (c) whereby the resulting metal leaf is coated on both sides with resinous material.
Claim 8
Dependent Claim
20 words
The process of claim 6 wherein the coatings on the two sides of the metal leaf have the same composition.
Claim 9
Dependent Claim
19 words
The process of claim 6 wherein the composition of the two resinous coatings on the metal leaf are different.
Claim 10
Dependent Claim
22 words
The process of claim 1, wherein said resinous coating material is made of at least one of thermoplastic resin and thermosetting resin.
Claim 11
Dependent Claim
30 words
The process of claim 9, wherein thermosetting resin is employed in the ratio of about 50 to about 200 parts by weight to 100 parts by weight of thermoplastic resin.
Claim 12
Dependent Claim
46 words
The process of claim 9, wherein said thermoplastic resin is a member selected from the group consisting of acrylic resin, polyester, polyamide, vinyl chloride-vinyl acetate copolymer, ethylene-vinyl acetate copolymer, polyvinyl butyral, polystyrene, maleic resin, petroleum resin, ester gum, nitrocellulose, ethyl cellulose, cellulose acetate, rosin and shellac.
Claim 13
Dependent Claim
38 words
The process of claim 9, wherein said thermositting resin is a member selected from the group consisting of thermosetting type acrylic resin, epoxy resin, urethane resin, urea resin, malamine resin, phenolic resin, alkyd resin and unsaturated polyester resin.
Claim 14
Dependent Claim
31 words
The process of claim 1, wherein the metal of said metal deposition layer is a member selected from the group consisting of gold, silver, aluminum, copper, nickel, tin, chromium and zinc.
Claim 15
Dependent Claim
14 words
The process of claim 1, wherein said resinous coating layer is colored with colorant.
Claim 16
Dependent Claim
21 words
The process of claim 1, wherein said reflexible pigment is about 1 to about 500 μ in length and width, respectively.
Claim 17
Dependent Claim
31 words
The process of claim 1, wherein said reflexible pigment is about 3 3 to about 200 μ in length and width, respectively, and about 0.1 to about 2 μ in thickness.
Claim 18
Dependent Claim
30 words
The process of claim 1, wherein said reflexible pigment is about 0.1 to about 20 μ in length and width, respectively, and about 0.1 to about 1.5 μ in thickness.
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) | 1979-06-08 | 1979-12-08 | 1980-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-08 | 1983-12-08 | 1984-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-08 | 1987-12-08 | 1988-06-08 | $7700.00 | Window Closed / Lapsed |