US4698391A
Expired / Lapsed
US
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Crosslinked polymers with lowered resistivity and materials and methods for their preparation
Assignee: Eastman Kodak Co
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Filing: 1986-07-30
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Granted: 1987-10-06
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Expires: 2006-07-30
Abstract
Abstract New crosslinked polymers are prepared from a combination of starting materials comprising a polymer, a crosslinking agent for the polymer, and a conductivity agent containing a quaternary ammonium moiety. The conductivity agent contains at least one functional group which, during an otherwise typical process of crosslinking the polymer through the crosslinking agent, reacts to bond the conductivity agent covalently and pendently to the crosslinking agent or the polymer. The resultant crosslinked polymer has lower electrical resistivity due to inclusion of the conductivity agent.
Inventors
- 👤 Paul D. Yacobucci
- 👤 Thomas Albano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:48
CPC Classifications
C; C08; C08L; C08L67/00; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/19; C09; C09D; C09D167/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
72 words
A combination of materials comprising: a polymer containing at least one functional moiety capable of reacting to bond to a crosslinking agent, a crosslinking agent for the polymer, and a conductivity agent containing a quaternary ammonium moiety and being capable of reacting with the crosslinking agent or the polymer to bond covalently and pendently to the crosslinking agent or the polymer, during a process of crosslinking the polymer through the crosslinking agent.
Claim 2
Dependent Claim
72 words
A combination of materials comprising: a polymer containing at least one functional moiety capable of reacting to bond to a crosslinking agent, a crosslinking agent for the polymer, and a conductivity agent containing a quaternary ammonium moiety and being capable of reacting with the crosslinking agent or the polymer to bond covalently and pendently to the crosslinking agent or the polymer, during a process of crosslinking the polymer through the crosslinking agent.
Claim 3
Dependent Claim
15 words
The combination as defined in claim 1, further comprising a catalyst for the crosslinking process.
Claim 4
Dependent Claim
14 words
The combination as defined in claim 2, further comprising a solvent for the polymer.
Claim 5
Dependent Claim
11 words
The combination as defined in claim 3, further comprising a pigment.
Claim 6
Dependent Claim
16 words
A combination as defined in claim 1, wherein the polymer is a polyester or polyacrylic polymer.
Claim 7
Dependent Claim
25 words
The combination as defined in claim 1, wherein the conductivity agent contains a hydroxyl moiety functional to react with the crosslinking agent or the polymer.
Claim 8
Dependent Claim
43 words
The combination as defined in claim 1, wherein the crosslinking agent contains at least three ether moieties, at least two of which are functional to react with the polymer and at least one of which is functional to react with the conductivity agent.
Claim 9
Dependent Claim
13 words
The combination as defined in claim 1, wherein the crosslinking agent comprises hexa(methoxymethyl)melamine.
Claim 10
Dependent Claim
17 words
The combination as defined in claim 1, wherein the conductivity agent is N-butyl-N,N-bis(2-hydroxyethyl)-N-methylammonium bromide or N-decyl-N,N-bis(2-hydroxyethyl)-N-methylammonium bromide.
Claim 11
Dependent Claim
28 words
A polymer crosslinked through a crosslinking agent and having a conductivity agent that contains a quaternary ammonium moiety and is bonded covalently and pendently to the crosslinking agent.
Claim 12
Dependent Claim
28 words
A polymer crosslinked through a crosslinking agent and having a conductivity agent that contains a quaternary ammonium moiety and is bonded covalently and pendently to the crosslinking agent.
Claim 13
Dependent Claim
39 words
A process comprising subjecting the combination of materials described in claim 1 to conditions sufficient to simultaneously crosslink the polymer through the crosslinking agent and bond the conductivity agent covalently and pendently to the crosslinking agent or the polymer.
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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) | 1990-10-05 | 1991-04-06 | 1991-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-05 | 1995-04-06 | 1995-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-05 | 1999-04-06 | 1999-10-06 | $7700.00 | Window Closed / Lapsed |