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Patent US4218362A successfully refreshed from Google Patents.
US4218362A
Expired / Lapsed
US
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Powder marking agent and marking method
Assignee: Chugoku Marine Paints Ltd
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Filing: 1977-11-17
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Granted: 1980-08-19
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Expires: 1997-11-17
Abstract
Abstract A powder marking agent comprising a fine powder which comprises, on a total volume basis, (a) about 48% to about 92% of a thermoplastic linear polyester, (b) about 5 to about 30% of a heat-resistant pigment, and (c) about 2 to about 40% of a fluorine-containing polymer, with the total by volume percent of the heat-resistant pigment (b) and the fluorine-containing polymer (c) being about 45% or less and a marking method which comprises applying the powder marking agent described above onto a metal member in a marking pattern.
Inventors
- 👤 Satoru Honjo
- 👤 Kenichi Sawada
- 👤 Masaki Fukagawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:48
CPC Classifications
C; C08; C08L; C08L67/00; C08L67/02; C08K; C08K3/00; C08K3/01; C08K3/013; C08K3/18; C08K3/20; C08L27/00; C08L27/02; C08L27/12; C09; C09D; C09D11/00; C09D11/02; C09D11/10; C09D11/102; C09D11/104; C09D167/00; C09D167/02
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
96 words
A marking agent powder comprising (a) about 48% to about 92% by volume of a thermoplastic linear polyester of at least one aromatic dicarboxylic acid, as an acid component, and at least one of a 2,2-alkyl-substituted 1,3-propanediol and a linear alkylene or polyalkylene glycol, as a diol component, (b) about 5 to about 30% by volume of a heat-resistant pigment, and (c) about 2 to about 40% by volume of a fluorine containing polymer, the total percent by volume of the heat-resistant pigment (b) and the fluorine-containing polymer (c) being about 45% by volume or less.
Claim 2
Dependent Claim
96 words
A marking agent powder comprising (a) about 48% to about 92% by volume of a thermoplastic linear polyester of at least one aromatic dicarboxylic acid, as an acid component, and at least one of a 2,2-alkyl-substituted 1,3-propanediol and a linear alkylene or polyalkylene glycol, as a diol component, (b) about 5 to about 30% by volume of a heat-resistant pigment, and (c) about 2 to about 40% by volume of a fluorine containing polymer, the total percent by volume of the heat-resistant pigment (b) and the fluorine-containing polymer (c) being about 45% by volume or less.
Claim 3
Dependent Claim
21 words
The powder of claim 1, wherein said heat-resistant pigment is titanium dioxide, zinc oxide, zinc sulfide, antimony oxide or zirconium oxide.
Claim 4
Dependent Claim
28 words
The powder of claim 2, wherein said heat-resistant pigment additionally contains, as an extender pigment, at least one of barium sulfate, aluminum oxide, silicon oxide or calcium silicate.
Claim 5
Dependent Claim
34 words
The powder of claim 1, wherein said thermoplastic linear polyester has a number average molecular weight ranging from about 5,000 to about 60,000 and a softening point of about 50° to about 170° C.
Claim 6
Dependent Claim
38 words
The powder of claim 4, wherein said acid component contains no more than about 10 mol % of an aliphatic dicarboxylic acid and wherein the diol component comprises about 60 mol % or more of a 2,2-alkyl-substituted 1,3-propanediol.
Claim 7
Dependent Claim
26 words
The powder of claim 4, wherein said thermoplastic linear polyester has a degree of polymerization corresponding to an intrinsic viscosity of about 0.6 to about 0.9.
Claim 8
Dependent Claim
50 words
The powder of claim 5, wherein said thermoplastic linear polyester comprises about 40 to about 70 mol % terephthalic acid and about 30 to about 60 mol % isophthalic acid with about 60 to about 95 mol % neopentyl glycol and about 5 to about 40 mol % ethylene glycol.
Claim 9
Dependent Claim
56 words
The powder of claim 1, wherein said marking agent powder additionally contains a saturated polyester having an average molecular weight of about 1,000 to about 4,000 and a softening point of about 60° to about 100° C. in an amount of 2 to about 30% by weight based on the weight of the thermoplastic linear polyester.
Claim 10
Dependent Claim
25 words
The powder of claim 1, wherein said fluorine-containing polymer is at least one of a tetrafluoroethyleneperfluoroalkylvinyl ether copolymer, a tetrafluoroethylene-ethylene copolymer, or a tetrafluoroethylene-hexafluoropropylene copolymer.
Claim 11
Dependent Claim
36 words
The powder of claim 1, wherein said marking agent powder contains less than about 7% by volume of at least one of a plasticizer, a flow-adjusting agent, a surface active agent or an adhesion improving resin.
Claim 12
Dependent Claim
21 words
The powder of claim 1, wherein said marking agent powder has a particle size ranging from about 10μ to about 200μ.
Claim 13
Dependent Claim
21 words
The powder of claim 1, wherein the degree of polymerization of said fluorine-containing polymer ranges from about 10,000 to about 100.000.
Claim 14
Dependent Claim
26 words
The powder of claim 1, wherein said marking agent powder contains at least about 2% by volume of a tetrafluoroethylene-perfluoroalkylvinyl ether copolymer and/or a tetrafluoroethylene-ethylene copolymer.
Claim 15
Dependent Claim
26 words
The powder of claim 1, wherein said marking agent powder contains at least about 3% by volume of a tetrafluoroethylene-perfluoroalkylvinyl ether copolymer and/or a tetrafluoroethylene-ethylene copolymer.
Claim 16
Dependent Claim
19 words
The powder of claim 11, wheerein said marking agent powder has a particle size ranging from 20μ to 150μ.
Claim 17
Dependent Claim
119 words
In a marking method which comprises applying a powder of a marking agent onto a metal member in a marking pattern, the improvement wherein the marking agent powder comprises (a) about 48% to about 92% by volume of a thermoplastic linear polyester of at least one aromatic dicarboxylic acid, as an acid component, and at least one of a 2,2-alkyl-substituted 1,3-propanediol and a linear alkylene or polyalkylene glycol, as a diol component, (b) about 5 to about 30% by volume of a heat-resistant pigment, and (c) about 2 to about 40% by volume of a fluorine-containing polymer, the total percent by volume of the heat-resistant pigment (b) and the fluorine-containing polymer (c) being about 45% by volume or less.
Claim 18
Dependent Claim
119 words
In a marking method which comprises applying a powder of a marking agent onto a metal member in a marking pattern, the improvement wherein the marking agent powder comprises (a) about 48% to about 92% by volume of a thermoplastic linear polyester of at least one aromatic dicarboxylic acid, as an acid component, and at least one of a 2,2-alkyl-substituted 1,3-propanediol and a linear alkylene or polyalkylene glycol, as a diol component, (b) about 5 to about 30% by volume of a heat-resistant pigment, and (c) about 2 to about 40% by volume of a fluorine-containing polymer, the total percent by volume of the heat-resistant pigment (b) and the fluorine-containing polymer (c) being about 45% by volume or less.
Claim 19
Dependent Claim
21 words
The method of claim 16, wherein said heat-resistant pigment is titanium dioxide, zinc oxide, zinc sulfide, antimony oxide or zirconium oxide.
Claim 20
Dependent Claim
28 words
The method of claim 17, wherein said heat-resistant pigment additionally contains, as an extender pigment, at least one of barium sulfate, aluminum oxide, silicon oxide or calcium silicate.
Claim 21
Dependent Claim
34 words
The method of claim 16, wherein said thermoplastic linear polyester has a number average molecular weight ranging from about 5,000 to about 60,000 and a softening point of about 50° to about 170° C.
Claim 22
Dependent Claim
38 words
The method of claim 19, wherein said acid component contains no more than about 10 mol % of an aliphatic dicarboxylic acid and wherein the diol component comprises about 60 mol % or more of a 2,2-alkyl-substituted 1,3-propanediol.
Claim 23
Dependent Claim
26 words
The method of claim 19, wherein said thermoplastic linear polyester has a degree of polymerization corresponding to an intrinsic viscosity of about 0.6 to about 0.9.
Claim 24
Dependent Claim
50 words
The method of claim 20, wherein said thermoplastic linear polyester comprises about 40 to about 70 mol % terephthalic acid and about 30 to about 60 mol % isophthalic acid with about 60 to about 95 mol % neopentyl glycol and about 5 to about 40 mol % ethylene glycol.
Claim 25
Dependent Claim
56 words
The method of claim 16, wherein said marking agent powder additionally contains a saturated polyester having an average molecular weight of about 1,000 to about 4,000 and a softening point of about 60° to about 100° C. in an amount of 2 to about 30% by weight based on the weight of the thermoplastic linear polyester.
Claim 26
Dependent Claim
23 words
The method of claim 16, wherein said fluorine-containing polymer is at least one of a tetrafluoro-ethylene-perfluoroalkylvinyl ether copolymer, tetrafluoroethylene-ethylene copolymer or tetrafluoroethylene-hexafluoropropylene copolymer.
Claim 27
Dependent Claim
35 words
The method of claim 16, wherein said marking agent contains less than about 7% by volume of at least one of a plasticizer, a flow-adjusting agent, a surface active agent or an adhesion improving resin.
Claim 28
Dependent Claim
21 words
The method of claim 16, wherein said marking agent powder has a particle size ranging from about 10μ to about 200μ.
Claim 29
Dependent Claim
20 words
The method of claim 16, wherein the applying of the marking agent powder is electrostatically applying the marking agent powder.
Claim 30
Dependent Claim
21 words
The method of claim 16, wherein the degree of polymerization of said fluorine-containing polymer ranges from about 10,000 to about 100,000.
Claim 31
Dependent Claim
26 words
The method of claim 16, wherein said marking agent powder contains at least about 2% by volume of a tetrafluoroethylene-perfluoroalkylvinyl ether copolymer and/or a tetrafluoroethylene-ethylene copolymer.
Claim 32
Dependent Claim
26 words
The method of claim 16, wherein said marking agent powder contains at least about 3% by volume of a tetrafluoroethylene-perfluoroalkylvinyl ether copolymer and/or a tetrafluoroethylene-ethylene copolymer.
Claim 33
Dependent Claim
19 words
The method of claim 26, wherein said marking agent powder has a particle size ranging from 20μ to 150μ.
Claim 34
Dependent Claim
17 words
The powder of claim 1, wherein said fluorine-containing polymer is at least one of polytetrafluoroethylene and poly(monochlorotrifluoroethylene).
Claim 35
Dependent Claim
17 words
The method of claim 16, wherein said fluorine-containing polymer is at least one of polytetrafluoroethylene and poly(monochlorotrifluoroethylene).
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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) | 1983-08-19 | 1984-02-18 | 1984-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-19 | 1988-02-18 | 1988-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-19 | 1992-02-18 | 1992-08-19 | $7700.00 | Window Closed / Lapsed |