Patent EP1150179A1 successfully refreshed from Google Patents.
EP1150179A1
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EP
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Fluorocarbon-silicone random copolymer for use in toner release layer
Assignee: Eastman Kodak Co
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Filing: 2001-04-10
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Granted: —
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Expires: 2021-04-10
Abstract
Abstract A fuser member comprising a core and a layer overlying the core, the layer including a fluorocarbon random copolymer, a curing agent which cures the fluorocarbon random copolymer, the cured fluorocarbon random copolymer having subunits of: ―(CH 2 CF 2 )x―, ―(CF 2 CF(CF 3 )y―, or ―(CF 2 CF 2 )z―, wherein x is from 30 to 90 mole percent, y is from 10 to 70 mole percent, z is from 0 to 34 mole percent; x + y + z equals 100 mole percent. The layer further including particulate filler having zinc oxide and yellow iron oxide and siloxane polymer comprising one or more curable, silanol-terminated, polyfunctional poly(C1-6 alkyl)siloxane polymers.
Inventors
- 👤 Jiann-Hsing Chen
- 👤 Joseph A. Pavlisko
- 👤 Nataly F. Boulatnikov
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-31 15:56
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2053; G03G15/2057; Y; Y10; Y10S; Y10S428/00; Y10S428/906; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31652; Y10T428/31663
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
113 words
A fuser member comprising a core and a layer overlying the
core, the layer including a fluorocarbon random copolymer, a curing agent which
cures the fluorocarbon random copolymer, the cured fluorocarbon random
copolymer having subunits of: ―(CH 2 CF 2 )x―, ―(CF 2 CF(CF 3 )y― or ―HCF 2 CF 2 )z―, wherein x is from 30 to 90 mole percent, y is from 10 to 70 mole percent, z is from 0 to 34 mole percent; x + y + z equals 100 mole percent; the layer further including particulate filler having zinc oxide and yellow
iron oxide; and a siloxane polymer comprising one or more curable, silanol-terminated,
polyfunctional poly(C1-6 alkyl)siloxane polymers.
Claim 2
Dependent Claim
67 words
The fusing member of claim 1 wherein the siloxane
polymer comprises at least two different functional siloxane units selected from
the group consisting of monofunctional, difunctional, trifunctional and
tetrafunctional siloxane units, and creating an interpenetrating network to cure the
fluorocarbon random copolymer forming separately crosslinked polymers, the
fluorocarbon polymer and the fluorocarbon curing agent forming one crosslinked
polymer, and the siloxane polymer forming a second crosslinked polymer.
Claim 3
Dependent Claim
14 words
The fuser member of claim 2 further including a cushion
layer on the core.
Claim 4
Dependent Claim
28 words
The fuser member of claim 1 wherein the zinc oxide is
present in an amount from 5 to 30 parts based on 100 parts of fluorocarbon
random copolymer.
Claim 5
Dependent Claim
29 words
The fuser member of claim 1 wherein the yellow iron oxide
is present in an amount from 5 to 30 parts based on 100 parts of fluorocarbon
random copolymer.
Claim 6
Dependent Claim
11 words
The fuser member of claim 1 further including an additional
filler.
Claim 7
Dependent Claim
15 words
The fuser member of claim 1 wherein the fluorocarbon
random copolymer is nucleophilic addition cured.
Claim 8
Dependent Claim
16 words
The fuser member of claim 1 wherein the fluorocarbon
random copolymer is crosslinked by biphenolic residues.
Claim 9
Dependent Claim
32 words
The fuser member of claim 1 wherein x is from 40 to 80
mole percent, y is from 10 to 60 mole percent, and z is from 0 to 34 mole percent.
Claim 10
Dependent Claim
27 words
The fuser member of claim 1 wherein x is from 42 to 75
mole percent, y is from 14 to 58 mole percent, and z is 0.
Claim 11
Dependent Claim
14 words
The fuser member of claim 1 wherein x is greater than 40
mole percent.
Claim 12
Dependent Claim
16 words
The fuser member of claim 1 wherein the curable
polyfunctional poly(C1-6 alkyl)siloxane polymeris a heat-curable polymer.
Claim 13
Dependent Claim
36 words
The fuser member of claim 1 wherein the curable
polyfunctional poly(C1-6 alkyl)siloxane polymer comprises a silicone polymer
comprising repeating units of the formula (R1) a SiO (4-a)2 wherein Rl is C1-6 alkyl and a is 0-3.
Claim 14
Dependent Claim
10 words
The fuser member of claim 13 wherein R1 is methyl.
Claim 15
Dependent Claim
48 words
The fuser member of claim 13 wherein the silicone polymer
comprises a polydimethylsiloxane having a number average molecular weight of
between about 20,000 to 300,000 and a polymethylsiloxane comprising
monofunctional and tetrafunctional siloxane repeating units and having a number-average
molecular weight in the range of 1,000 to 10,000.
Claim 16
Dependent Claim
74 words
The fuser member of claim 1 wherein the siloxane polymer
comprises a silanol- or trimethylsilyl-terminated polymethylsiloxane and is a
liquid blend comprising about 60-80 weight percent of a difunctional
polydimethylsiloxane having a number-average molecular weight of about
150,000, and 20-40 weight percent of a polytrimethylsilyl silicate resin having
monofunctional and tetrafunctional repeating units in an average ratio of between
about 0.8 and 1 to 1, and having a number-average molecular weight of about
2,200.
Claim 17
Dependent Claim
14 words
The fuser member of claim 1 further including a cushion
layer on the core.
References Cited (Backward Citations)
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