# US 5,700,568 A · Fluoroelastomer members

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- Number: US 5,700,568 A
- Document ID: US5700568A
- Status: Granted
- Kind: A
- Application number: 08/623,273
- Filed: 1996-03-28
- Granted: 1997-12-23
- Earliest claimed: 1996-03-28
- Assignees: Xerox Corporation
- Inventors: Santokh S. Badesha; George J. Heeks; Arnold W. Henry; Che Chung Chow
- Web page: https://patentgrep.com/patent/US5700568A

## CPC

- G03G 15/2057: {relating to the chemical composition of the heat element and layers thereof}
- C08G 77/442: containing vinyl polymer sequences
- C08G 81/024: {Block or graft polymers containing sequences of polymers of C08C or C08F and of polymers of C08G}
- C09D 183/10: Block or graft copolymers containing polysiloxane sequences (obtained by polymerising a compound having a carbon-to-carbon double bond on to a polysiloxane C09D151/08, C09D153/00)
- G03G 15/2025: {with special means for lubricating and/or cleaning the fixing unit, e.g. applying offset preventing fluid}
- Y10T 428/263: Coating layer not in excess of 5 mils thick or equivalent
- Y10T 428/31544: Addition polymer is perhalogenated
- Y10T 428/31663: As siloxane, silicone or silane
- Y10T 428/31699: Ester, halide or nitrile of addition polymer
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A fuser system member having a supporting substrate and a basic metal oxide-free outer surface layer of the reaction product of a fluoroelastomer, a polymerization initiator, a polyorganosiloxane and an amino silane.

## Claims

### Claim 1

A fuser system member comprising a supporting substrate with a basic metal oxide-free outer surface layer consisting essentially of the reaction product of a fluoroelastomer, a polymerization initiator, a polyorganosiloxane and an amino silane.

### Claim 2

A fuser system member comprising a supporting substrate with a basic metal oxide-free outer surface layer and wherein said outer layer consists essentially of the reaction product of a fluoroelastomer, an amino silane, a polymerization initiator and a polyorganosiloxane, wherein the amino silane content is from about 0.5 to about 10 percent by weight based on the weight of said fluoroelastomer.

### Claim 3 (depends on 1)

A fuser system member in accordance with claim 1, wherein the supporting substrate is a fuser roll, a pressure roll, or a release agent donor roll.

### Claim 4 (depends on 1)

A fuser system member in accordance with claim 1, wherein the supporting substrate is a cylindrical sleeve, a drum, a belt, or an endless belt.

### Claim 5

A fuser system member in accordance with claim, 1, wherein the supporting substrate is selected from the group consisting of aluminum, copper, and steel.

### Claim 6 (depends on 1)

A fuser system member in accordance with claim 1, further comprising from about 1 to about 10 intermediate layers situated between the supporting substrate and the outer surface layer.

### Claim 7 (depends on 6)

A fuser system member in accordance with claim 6, wherein at least one of the intermediate layers is an elastomer layer or an adhesive layer.

### Claim 8 (depends on 7)

A fuser system member in accordance with claim 7, wherein the intermediate elastomer layer comprises a silicone elastomer.

### Claim 9 (depends on 1)

A fuser system member in accordance with claim 1, wherein the outer surface layer is from about 25 to about 75 micrometers in thickness.

### Claim 10 (depends on 1)

A fuser system member in accordance with claim 1, wherein the amino silane is of the formula NH.sub.2 (CH.sub.2).sub.n NH(CH.sub.2).sub.m Si((OR).sub.t (R').sub.w), wherein n and m are numbers from about 1 to about 20; t+w=3 and R and R' are an aliphatic hydrocarbon having from about 1 to about 20 carbon atoms or an aromatic group having from about 6 to about 18 carbon atoms.

### Claim 11 (depends on 10)

A fuser system member in accordance with claim 10, wherein the amino silane is selected from the group consisting of N-(2-aminoethyl-3-aminopropyl)-trimethoxy silane, 3-(N-styrylmethyl-2-aminoethyl aminopropyl) trimethoxy silane, (aminoethyl aminomethyl) phenyl trimethoxy silane, and (aminoethyl aminomethyl) phenyl triethoxy silane.

### Claim 12 (depends on 1)

A fuser system member in accordance with claim 1, wherein the fluoroelastomer is selected from the group consisting of (1) a class of copolymers of vinylidenefluoride and hexafluoropropylene and (2) a class of terpolymers of vinylidenefluoride, hexafluoropropylene and tetrafluoroethylene.

### Claim 13 (depends on 1)

A fuser system member in accordance with claim 1, wherein the fluoroelastomer comprises 35 weight percent of vinylidenefluoride, 34 weight percent of hexafluoropropylene and 29 weight percent of tetrafluoroethylene.

### Claim 14 (depends on 1)

A fuser system member in accordance with claim 1, wherein the polyorganosiloxane has the following formula: ##STR2## where R is selected from the group consisting of an alkyl of from about 1 to about 24 carbons, an alkenyl of from about 2 to about 24 carbons, and a substituted or unsubstituted aryl of from about 6 to about 24 carbons; A is selected from the group consisting of an aryl of from about 6 to about 24 carbons, a substituted or unsubstituted alkene of from about 2 to about 8 carbons, and a substituted or unsubstituted alkyne of from about 2 to about 8 carbons; and n is from about 2 to about 400.

### Claim 15 (depends on 1)

A fuser system member in accordance with claim 1, wherein the polymerization initiator is selected from the group consisting of peroxides and azonitriles.

### Claim 16

A fuser system member comprising a supporting substrate having an outer layer comprising a basic metal oxide-free volume grafted elastomer, said volume grafted elastomer prepared by:
a) dissolving a fluoroelastomer;
b) adding and reacting an amino silane as a dehydrofluorinating agent and a curing agent in an amount of from about 0.5 to about 10 weight percent based on the weight of fluoroelastomer;
c) adding a polymerization initiator, a polyorganosiloxane and optionally adding an additional amount of amino silane to form a homogeneous volume grafted elastomer; and
d) subsequently providing at least one layer of the homogeneous volume grafted elastomer of c) to said supporting substrate.

### Claim 17

A fuser system member comprising a supporting substrate having an outer layer comprising a basic metal oxide-free volume grafted elastomer, said volume grafted elastomer prepared by:
a) dissolving a fluoroelastomer;
b) adding a dehydrofluorinating agent, a polymerization initiator and a polyorganosiloxane;
c) adding and reacting an amino silane in an amount of from about 0.5 to about 10 percent to effect curing, thereby forming a homogeneous volume grafted elastomer; and
d) subsequently providing at least one layer of the homogeneous volume grafted elastomer of c) to said supporting substrate.

### Claim 18

A fuser system member comprising a supporting substrate with an outer surface layer consisting essentially of the reaction product of a fluoroelastomer, a polymerization initiator, a polyorganosiloxane and an amino silane, wherein the amino silane is of the formula NH.sub.2 (CH.sub.2).sub.n NH(CH.sub.2).sub.m Si((OR).sub.t (R').sub.w), wherein n and m are numbers from about 1 to about 20; t+w=3 and R and R' are an aliphatic hydrocarbon having from about 1 to about 20 carbon atoms or an aromatic group having from about 6 to about 18 carbon atoms.