Patent US5370931A successfully refreshed from Google Patents.
US5370931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuser member overcoated with a fluoroelastomer, polyorganosiloxane and copper oxide composition
Assignee: Xerox Corp
•
Filing: 1993-05-27
•
Granted: 1994-12-06
•
Expires: 2013-05-27
Abstract
Abstract A fuser member comprised of a supporting substrate comprising an outer layer of a volume grafted elastomer, which is a substantially uniform integral interpenetrating network of a hybrid composition of a fluoroelastomer and a polyorganosiloxane, said volume graft having been formed by dehydrofluorination of said fluoroelastomer by a nucleophilic dehydrofluorinating agent, followed by addition polymerization by the addition of an alkene or alkyne functionally terminated polyorganosiloxane and a polymerization initiator; and wherein said outer layer contains a reactive metal oxide in an amount of from about 2 to about 7 weight percent.
Inventors
- 👤 Louis D. Fratangelo
- 👤 Santokh S. Badesha
- 👤 Arnold W. Henry
- 👤 Robert M. Ferguson
- 👤 David H. Pan
- 👤 George J. Heeks
- 👤 Victor Berko-Boateng
- 👤 Lieng-Huang Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:00
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; C; C08; C08F; C08F299/00; C08F299/02; C08F299/08; C08G; C08G81/00; C08G81/02; C08G81/024; C08J; C08J3/00; C08J3/24; C08J3/246; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L83/00; C08L83/10; G03G15/2017; G03G15/2025; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/31504; Y10T428/3154; Y10T428/31652; Y10T428/31663; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
96 words
A fuser member consisting essentially of a supporting substrate comprising an outer layer of a grafted elastomer, which is a substantially uniform integral interpenetrating network of a hybrid composition of a fluorelastomer and a polyorganosiloxane, said graft having been formed by dehydrofluorination of said fluorelastomer by a nucleophilic dehydrofluorinating agent, followed by addition polymerization by the addition of an alkene or alkyne functionally terminated polyorganosiloxane and a polymerization initiator; and wherein said outer layer contains copper oxide in an amount of from 2 to 7 weight percent based upon the total weight of said outer layer.
Claim 2
Dependent Claim
96 words
A fuser member consisting essentially of a supporting substrate comprising an outer layer of a grafted elastomer, which is a substantially uniform integral interpenetrating network of a hybrid composition of a fluorelastomer and a polyorganosiloxane, said graft having been formed by dehydrofluorination of said fluorelastomer by a nucleophilic dehydrofluorinating agent, followed by addition polymerization by the addition of an alkene or alkyne functionally terminated polyorganosiloxane and a polymerization initiator; and wherein said outer layer contains copper oxide in an amount of from 2 to 7 weight percent based upon the total weight of said outer layer.
Claim 3
Dependent Claim
23 words
A fuser member in accordance with claim 1 wherein said fluorelastomer is selected from the group consisting of poly(vinylidene fluoride-hexafluoropropylene) and poly(vinylidene fluoridehexafluoropropylene-tetrafluoroethylene).
Claim 4
Dependent Claim
84 words
A fuser member in accordance with claim 1 wherein said polyorganosiloxane has the formula ##STR4## where R is an alkyl, alkenyl or aryl having less than 19 carbon atoms or an aryl group substituted with an amino, hydroxy, mercapto, C 2 -C 19 alkyl or C 2 -C 19 alkenyl group; the functional group A is an alkene or 2 to 8 carbon atoms or an alkene or alkyne substituted with an alkyl or aryl; and n is from about 2 to about 350.
Claim 5
Dependent Claim
54 words
A fuser member in accordance with claim 1 wherein said dehydrofluorinating agent is selected from the group consisting of primary, secondary and tertiary aliphatic and aromatic amines where the aliphatic and aromatic groups have from 2 to 15 carbon atoms and aliphatic and aromatic diamines and triamines having from 2 to 15 carbon atoms.
Claim 6
Dependent Claim
32 words
A fuser member in accordance with claim 4 wherein said dehydrofluorinating agent is selected from the group consisting of N-(2 aminoethyl-3-aminopropyl) trimethoxy silane, 3-(N-styrylmethyl-2aminoethylamino) propyltrimethoxy silane hydrochloride and (aminoethylamino methyl) phenethyltrimethoxy silane.
Claim 7
Dependent Claim
15 words
A fuser member in accordance with claim 1 wherein the polymerization initiator is a peroxide.
Claim 8
Dependent Claim
22 words
A fuser member in accordance with claim 6 wherein the peroxide is selected from the group consisting of benzoyl peroxide and azoisobutyronitrile.
Claim 9
Dependent Claim
21 words
A fuser member in accordance with claim 1 wherein said outer layer is from about 12.5 to about 125 micrometers thick.
Claim 10
Dependent Claim
16 words
A fuser member in accordance with claim 1 wherein said supporting substrate is a cylindrical sleeve.
Claim 11
Dependent Claim
13 words
A fuser member in accordance with claim 9 including an intermediate elastomer layer.
Claim 12
Dependent Claim
21 words
A fuser member in accordance with claim 1 wherein said member is a pressure roll, or a release agent donor roll.
Claim 13
Dependent Claim
34 words
A fuser member in accordance with claim 1 wherein the copper oxide is present in an amount of from between 2 to 5 weight percent based upon the total weight of said outer layer.
References Cited (Backward Citations)
US4029827A
Cited
US4272179A
Cited
US4777087A
Cited
US5017432A
Cited
US4853737A
Cited
US5061965A
Cited
US5141788A
Cited
US5166031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-12-05 | 1998-06-06 | 1998-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-12-05 | 2002-06-06 | 2002-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-12-05 | 2006-06-06 | 2006-12-06 | $7700.00 | Window Closed / Lapsed |