US4981886A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for production of colored macromolecular polymer
Assignee: National Institute of Advanced Industrial Science and Technology
•
Filing: 1988-10-26
•
Granted: 1991-01-01
•
Expires: 2008-10-26
Abstract
Abstract A colored macromolecular polymer is produced by a method which comprises dissolving a soluble salt of a noble metal in a liquid monomer, polymerizing the monomer having the soluble salt of the noble metal dissolved therein, and subjecting the resultant solid polymer to a heat treatment at a temperature equal to or exceeding the colloid-forming temperature of the noble metal.
Inventors
- 👤 Yukimichi Nako
- 👤 Kyoji Kaeriyama
- 👤 Aizo Yamauchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:18
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/44; C08J; C08J3/00; C08J3/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
196 words
A method for the production of a colored macromolecular polymer, which consists essentially of: dissolving in a monomer selected from the group consisting of methyl methacrylate, styrene, vinyl acetate, a diene and an epoxy compound, each of which is liquid at room temperature, 0.001 to 10% by weight, based on the amount of said monomer, of at least one soluble salt selected from the group consisting of alkali metal salts of noble metal ion halogen complexes, acetylacetonate slats of noble metal ions and ion pairs of noble metal anion complexes with quaternary ammonium ions; heating the noble metal salt containing monomer to a temperature not exceeding 100° C. or the boiling point of the monomer to prepare a polymerized product containing the noble metal salt dispersed therein, said noble metal sail not being capable of being reduced at the temperatures of polymerization; and heat-treating the polymerized product containing the noble metal salt dispersed therein to a temperature of at least 120° C. but at a temperature not exceeding the melting point of the polymerized product, thereby causing reduction of the dispersed noble metal salt and giving rise to a nobel metal colloid within the heat-treated product.
Claim 2
Independent Claim
196 words
A method for the production of a colored macromolecular polymer, which consists essentially of: dissolving in a monomer selected from the group consisting of methyl methacrylate, styrene, vinyl acetate, a diene and an epoxy compound, each of which is liquid at room temperature, 0.001 to 10% by weight, based on the amount of said monomer, of at least one soluble salt selected from the group consisting of alkali metal salts of noble metal ion halogen complexes, acetylacetonate slats of noble metal ions and ion pairs of noble metal anion complexes with quaternary ammonium ions; heating the noble metal salt containing monomer to a temperature not exceeding 100° C. or the boiling point of the monomer to prepare a polymerized product containing the noble metal salt dispersed therein, said noble metal sail not being capable of being reduced at the temperatures of polymerization; and heat-treating the polymerized product containing the noble metal salt dispersed therein to a temperature of at least 120° C. but at a temperature not exceeding the melting point of the polymerized product, thereby causing reduction of the dispersed noble metal salt and giving rise to a nobel metal colloid within the heat-treated product.
Claim 3
Dependent Claim
14 words
The method of claim 1, wherein said epoxy compound is an epoxy adhesive agent.
References Cited (Backward Citations)
US1705264A
Cited
SU125885A1
Cited
US4061609A
Cited
JPS5949202A
Cited
JPS60178401A
Cited
US4548984A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-12-31 | 1994-07-02 | 1995-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-12-31 | 1998-07-02 | 1999-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-12-31 | 2002-07-02 | 2003-01-01 | $7700.00 | Window Closed / Lapsed |