US4443565A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoplastic resin composition containing metal foil fragments and process for its production
Assignee: Mitsubishi Chemical Corp
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Filing: 1983-02-01
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Granted: 1984-04-17
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Expires: 2003-02-01
Abstract
Abstract A thermoplastic resin composition comprises 100 parts by weight of metal foil fragments, from 1 to 10 parts by weight of a first polymer covering the surfaces of the metal foil fragments and obtained by polymerizing at least one of monomers selected from the group consisting of acrylic acid, methacrylic acid, an alkylacrylate, an aminoalkylacrylate, an alkylmethacrylate and an aminoalkylmethacrylate in the presence of the metal foil fragments, and from 5 to 33 parts by weight of a second polymer obtained by polymerizing a mixture of an aromatic vinyl monomer and a monomer copolymerizable with the atomatic vinyl monomer. Also disclosed is a process for preparing the thermoplastic resin composition containing metal foil fragments.
Inventors
- 👤 Kanji Kasahara
- 👤 Akira Sakamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:40
CPC Classifications
H; H05; H05K; H05K9/00; H05K9/0073; H05K9/0081; H05K9/0083; C; C08; C08K; C08K3/00; C08K3/02; C08K3/08; C08K9/00; C08K9/08; C08L; C08L25/00; C08L51/00; C08L51/10; C08L55/00; C08L55/02
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
122 words
A composition comprising (a) 100 parts by weight of metal foil fragments, (b) from 1 to 10 parts by weight of a first polymer covering the surfaces of the metal foil fragments and obtained by first homopolymerizing or copolymerizing with each other at least one of monomers selected from the group consisting of acrylic acid, methacrylic acid, and alkylacrylate, an aminoalkylacrylate, an alkylmethacrylate and an aminoalkylmethacrylate in the presence of the metal foil fragments, and (c) from 5 to 33 parts by weight of a second polymer obtained by subsequently polymerizing a mixture of an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer selected from the group consisting of acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.
Claim 2
Dependent Claim
122 words
A composition comprising (a) 100 parts by weight of metal foil fragments, (b) from 1 to 10 parts by weight of a first polymer covering the surfaces of the metal foil fragments and obtained by first homopolymerizing or copolymerizing with each other at least one of monomers selected from the group consisting of acrylic acid, methacrylic acid, and alkylacrylate, an aminoalkylacrylate, an alkylmethacrylate and an aminoalkylmethacrylate in the presence of the metal foil fragments, and (c) from 5 to 33 parts by weight of a second polymer obtained by subsequently polymerizing a mixture of an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer selected from the group consisting of acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.
Claim 3
Dependent Claim
25 words
The composition according to claim 1 wherein said metal foil fragments are made of aluminum, zinc, copper, iron, tin, gold, silver or an alloy thereof.
Claim 4
Dependent Claim
15 words
The composition according to claim 1 wherein said metal foil fragments are made of aluminum.
Claim 5
Dependent Claim
40 words
The composition according to claim 1 wherein said metal foil fragments are a mixture of from 3 to 70% by weight of zinc foil fragments or copper foil fragments and from 30 to 97% by weight of aluminum foil fragments.
Claim 6
Dependent Claim
40 words
The composition according to claim 1 wherein said metal foil fragments are a mixture of from 5 to 20% by weight of zinc foil fragments or copper foil fragments and from 80 to 95% by weight of aluminum foil fragments.
Claim 7
Dependent Claim
27 words
The composition according to claim 1 wherein said metal foil fragments have a size of 0.5-5 mm×0.5-5 mm and a thickness of from 5 to 50 μm.
Claim 8
Dependent Claim
18 words
The composition according to claim 6 wherein said metal foil fragments have a size of 1-2 mm×1-2 mm.
Claim 9
Dependent Claim
30 words
The composition according to claim 1 wherein said first polymer is a homopolymer of methylmethacrylate or a copolymer of methylmethacrylate with from 10 to 30% by weight of acrylic acid.
Claim 10
Dependent Claim
28 words
The composition according to claim 1 wherein said first polymer is a copolymer of methylmethacrylate with from 30 to 70% by weight of an aminoalkylacrylate or an aminoalkylmethacrylate.
Claim 11
Dependent Claim
27 words
The composition according to claim 9 wherein the aminoalkyl group in the aminoalkylacrylate or the aminoalkylmethacrylate is a dimethylaminoethyl group, a diethylaminoethyl group or a dimethylaminopropyl group.
Claim 12
Dependent Claim
34 words
The composition according to claim 1 wherein the second polymer is a copolymer of an aromatic vinyl monomer with from 20 to 50% by weight of a monomer copolymerizable with the aromatic vinyl monomer.
Claim 13
Dependent Claim
42 words
The composition according to claim 1 wherein the aromatic vinyl monomer is styrene, α-methylstyrene, vinyl toluene or a halogenated styrene and the monomer copolymerizable with the aromatic vinyl monomer is acrylonitrile, methacrylonitrile, or an alkyl ester of acrylic acid or methacrylic acid.
Claim 14
Dependent Claim
120 words
A process for preparing a thermoplastic resin composition containing metal foil fragments, which comprises first suspension-homopolymerizing or copolymerizing with each other from 1 to 10 parts by weight of at least one of monomers selected from the group consisting of acrylic acid, methacrylic acid, an alkylacrylate, an alkylmethacrylate, an aminoalkylacrylate and an aminoalkylmethacrylate in the presence of 100 parts by weight of metal foil fragments and then adding and suspension-polymerizing from 5 to 33 parts by weight, based on 100 parts by weight of the metal foil fragments, of a mixture of an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer selected from the group consisting of acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.
Claim 15
Dependent Claim
120 words
A process for preparing a thermoplastic resin composition containing metal foil fragments, which comprises first suspension-homopolymerizing or copolymerizing with each other from 1 to 10 parts by weight of at least one of monomers selected from the group consisting of acrylic acid, methacrylic acid, an alkylacrylate, an alkylmethacrylate, an aminoalkylacrylate and an aminoalkylmethacrylate in the presence of 100 parts by weight of metal foil fragments and then adding and suspension-polymerizing from 5 to 33 parts by weight, based on 100 parts by weight of the metal foil fragments, of a mixture of an aromatic vinyl monomer and a monomer copolymerizable with the aromatic vinyl monomer selected from the group consisting of acrylonitrile, methacrylonitrile, acrylic acid esters and methacrylic acid esters.
Claim 16
Dependent Claim
25 words
The process according to claim 13 wherein said metal foil fragments are made of aluminum, zinc, copper, iron, tin, gold, silver or an alloy thereof.
Claim 17
Dependent Claim
40 words
The process according to claim 13 wherein said metal foil fragments are a mixture of from 3 to 70% by weight of zinc foil fragments or copper foil fragments and from 30 to 97% by weight of aluminum foil fragments.
Claim 18
Dependent Claim
27 words
The process according to claim 13 wherein said metal foil fragments have a size of 0.5-5 mm×0.5-5 mm and a thickness of from 5 to 50 μm.
Claim 19
Dependent Claim
30 words
The process according to claim 13 wherein said first polymer is a homopolymer of methylmethacrylate or a copolymer of methylmethacrylate with from 10 to 30% by weight of acrylic acid.
Claim 20
Dependent Claim
28 words
The process according to claim 13 wherein said first polymer is a copolymer of methylmethacrylate with from 30 to 70% by weight of an aminoalkylacrylate or an aminoalkylmethacrylate.
Claim 21
Dependent Claim
34 words
The process according to claim 13 wherein said second polymer is a copolymer of an aromatic vinyl monomer with from 20 to 50% by weight of a monomer copolymerizable with the aromatic vinyl monomer.
Claim 22
Dependent Claim
42 words
The process according to claim 13 wherein the aromatic vinyl monomer is styrene, α-methylstyrene, vinyl toluene or a halogenated styrene and the monomer copolymerizable with the aromatic vinyl monomer is acrylonitrile, methacrylonitrile, or an alkyl ester of acrylic acid or methacrylic acid.
References Cited (Backward Citations)
JPS5765754A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |