US4132823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly(arylene sulfide) resin coatings
Assignee: Phillips Petroleum Co
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Filing: 1977-03-23
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Granted: 1979-01-02
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Expires: 1997-03-23
Abstract
Abstract Poly(amic acid)s convertible to polyimides are used as primers for copper-containing substrates prior to coating the substrate with an arylene sulfide polymer, thereby resulting in improved adhesion of the arylene sulfide polymer coating after curing to the substrate.
Inventors
- 👤 Jennings P. Blackwell
- 👤 Donnie G. Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:15
CPC Classifications
C; C09; C09D; C09D181/00; C09D181/02; B; B05; B05D; B05D7/00; B05D7/14; B05D7/16; B05D7/50; B05D7/52; B05D7/54; B05D7/546; C09D179/00; C09D179/04; C09D179/08; C09D5/00; C09D5/002; B05D2202/00; B05D2202/40; B05D2202/45; B05D3/00; B05D3/10; B05D3/102; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24942; Y10T428/2495; Y10T428/24967; Y10T428/31504; Y10T428/31533
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
49 words
An arylene sulfide polymer coated structure comprising: (a) a copper-containing metal substrate in which at least 50 weight percent of the substrate is copper, having bonded thereto: (b) a layer of a polyimide and (c) a layer of an arylene sulfide polymer cured and bonded to said polyimide layer.
Claim 2
Dependent Claim
49 words
An arylene sulfide polymer coated structure comprising: (a) a copper-containing metal substrate in which at least 50 weight percent of the substrate is copper, having bonded thereto: (b) a layer of a polyimide and (c) a layer of an arylene sulfide polymer cured and bonded to said polyimide layer.
Claim 3
Dependent Claim
86 words
An article according to claim 1 wherein the polyimide of (b) is formed by heating an aromatic poly(amic acid) having recurring units each of which can be represented by the formula ##STR4## where X is selected from the group consisting of ##STR5## Y is selected from the group consisting of ##STR6## n is 0 or 1, A is selected from the group consisting of oxygen, sulfur, sulfonyl, carbonyl, and --CR 2 --, and each R is selected from the group consisting of hydrogen, methyl, and trifluoromethyl.
Claim 4
Dependent Claim
46 words
A structure according to claim 2 wherein (b) is a condensation product of the dianhydride of 1,1,1,3,3,3-hexafluoro-2,2-bis(3,4-dicarboxyphenyl)propane with bis(4-aminophenyl) ether or a nadic anhydride-terminated poly(amic acid) having a backbone comprised of alternating units derived from bis(4-aminophenyl)methane and the dianhydride of 3,3',4,4'-tetracarboxybenzophenone and (c) is poly(phenylene sulfide).
Claim 5
Dependent Claim
31 words
A structure according to claim 1 wherein (b) is a layer of 0.5 mil to about 5 mils and (c) is a layer of about 1 mil to about 20 mils.
Claim 6
Dependent Claim
50 words
A copper-containing substrate in which at least 50 weight percent of the substrate is copper coated with superposed layers of (a) at least one layer of a polyimide bonded to said substrate and (b) at least one layer of a poly(arylene sulfide) resin bonded to a layer of said polyimide.
Claim 7
Dependent Claim
50 words
A copper-containing substrate in which at least 50 weight percent of the substrate is copper coated with superposed layers of (a) at least one layer of a polyimide bonded to said substrate and (b) at least one layer of a poly(arylene sulfide) resin bonded to a layer of said polyimide.
Claim 8
Dependent Claim
88 words
A substrate according to claim 5 wherein (a) is derived from an aromatic poly(amic acid) having recurring units each of which can be represented by the formula ##STR7## where X is selected from the group consisting of ##STR8## Y is selected from the group consisting of ##STR9## n is 0 or 1, A is selected from the group consisting of oxygen, sulfur, sulfonyl, carbonyl, and --CR 2 --, and each R is selected from the group consisting of hydrogen, methyl, and trifluoromethyl, and (b) is a poly(phenylene sulfide).
Claim 9
Dependent Claim
32 words
An article according to claim 5 wherein the thickness of each layer of (a) is about 0.5 mil to about 5 mils and (b) is about 1 mil to about 20 mils.
Claim 10
Dependent Claim
15 words
An article according to claim 5 wherein (b) contains at least one filler and/or pigment.
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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |