RHENOFLUOR FKMrch.lanxess.com/content/uploads/2014/05/Rhenofluor... · 2017. 9. 1. · Dyneon® FC 2230 100 100 100 100 100 100 N990 Carbon Black 30 30 30 30 30 30 Ca(OH) 2 6 6 6

RHENOFLUOR™ FKM Curative Technology

Global Rubber Performance

Rhein Chemie Corporation offers a complete line of

fluoroelastomer (FKM) crosslinking agents for the

manufacture of high-quality, high-performance applications.

Rhein Chemie Corporation’s RHENOFLUOR™ Curative

Technology allows end-users to achieve homogenous

dispersion characteristics coupled with reproducible

compound/curing results on a batch-to-batch basis.

The RHENOFLUOR™ product line can be utilized to cure

raw fluoroelastomer gum stocks in addition to altering

pre-compounded cure inclusive FKM elastomers.

General Fluoroelastomer Compounding

FKM Compound Formulation

Compound Component phr

Fluoroelastomer 100

Cure System (RHENOFLUOR™) 1-4

Acid Acceptor System 6-20

Filler System 0-80

Processing Aid(s) (AFLUX® 54) 0-2

RHENOFLUOR™ Curative Technology encompasses

the advanced characteristics of the bisphenol curative

system; providing excellent processing safety, fast cures

to high states, excellent final properties, and especially

high-temperature compression-set resistance.

Fluoroelastomer Applications

Aerospace

O-ring seals in fuel, lubricant and hydraulic systems

Manifold gaskets

Fuel tank bladders

Firewall seals

Tire valve stem seals

Clips for jet engine wiring harnesses

Automotive

Shaft seals

Fuel hoses (underhood and in-tank)

Fuel injector o-ring seals

Fuel pump cups

Seals in emission-control devices

Speedometer cable seals

Industrial

Binders for military flares and explosives

Check valve balls

Copy machine fuser rolls

Diaphragms

Electrical connectors

Flue duct expansion joints

Gaskets for molded, die-cut and extruded shapes

Hoses (chemical, fuel and oil transfer)

Oil well seals and packings

Wires & Cables

Disclaimer: As with any product, use of the products mentioned in this publication in a given application must be tested (including field testing, etc.) by the user in advance to determine suitability.

RHENOFLUOR™ FKM

Curative Technology

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Page 2 of 12: This document contains important information and must be read in its entirety.

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Two components are required in the bisphenol curing

of fluoroelastomers, bisphenol and the phosphonium.

The utilization of either the RHENOFLUOR™ OPC or

RHENOFLUOR™ CC provides protection against the

negative influence sulfur has on fluoroelastomer curing.

Because of this, RHENOFLUOR™ Curative Technology

can and will provide “sulfur-safe” compounding through

the utilization of any product containing Rhein Chemie

Corporation’s proprietary organo-phosphonium technology.

This added protection against sulfur contamination coupled

with an easy to handle, readily dispersible curative technology

has never before been available in the dispersion marketplace.

Only in some cases has this technology been made available

through the utilization of cure-inclusive pre-compounded

fluoroelastomer gumstocks.

Products Containing “Sulfur-Safe” Organo-phosphonium Chemistry

RHENOFLUOR™ OPC – 10% active dispersion of proprietary

organo-phosphonium in a 66% fluorine di-polymer binder.

RHENOFLUOR™ CC – 90% active molecular powder

dispersion (MPD) of a blended ratio of bisphenol and

proprietary organo-phosphonium.

RHENOFLUOR™ Curative Technology

Product Line


RHENOFLUOR™ Curative Technology Product Line Offerings

Product Function Binder System % Activity Sulfur Safe

RHENOFLUOR™ BF6 FKM Crosslinker 66% Fluorine Dipolymer 50%

RHENOFLUOR™ OPC FKM Accelerator 66% Fluorine Dipolymer 10% p

RHENOFLUOR™ CC

Curative Complex Inert Carrier 90% p (Crosslinker + Accelerator)

RHENOFLUOR™ BF6 – FKM Crosslinker

In FKM Gum Rubbers: approx. 2.5 phr in combination with

approx. 2.1 phr of RHENOFLUOR™ OPC (organo-phospho-

nium). In Cure-inclusive FKM Rubbers: approx. 1.9 phr, is

utilized to modify the cure speed and physical properties.

Mode of Action RHENOFLUOR™ BF6 is a crosslinking agent for fluoroelas-

tomer rubbers. RHENOFLUOR™ BF6 can be utilized as a

crosslinker for both di-polymer and ter-polymer types, requiring

a quick incorporation into the fluoroelastomer matrix with

excellent dispersion characteristics. Due to the homogenous

dispersion in the fluoroelastomer matrix, the occurrence of

localized over-cured/under-cured zones is avoided. This

ensures an improved resistance against ageing and dynamic

fatigue. RHENOFLUOR™ BF6 provides vulcanizates with excel-

lent physical properties and compression set characteristics.

ProcessingRHENOFLUOR™ BF6 contains special dispersing agents,

allowing quick absorption and excellent dispersion into fluo-

roelastomer rubber types. The utilization of RHENOFLUOR™

BF6 ensures clean, environmentally-friendly handling combined

with ease of incorporation and a rapid, homogenous dispersion.

Product Benefits / Unique Selling FeaturesUniform dispersion is particularly difficult in compounds

cured with the BF6 system. BF6 (crosslinker) and the onium

(accelerators) are high-melting solids. To cope with this, FKM

producers offer FKM polymers which contain the system’s

pre-incorporated, i.e. cure-inclusive polymers. Rhein Chemie

Corporation offers “solutions technology”, a new approach

to incorporate curative dispersions on a mill. Current issues

include: mill popping, poor dispersion and length of

incorporation time.

Appearance / Form

Off-white to gray granules

RHENOFLUOR™ BF6 – FKM

FKM Crosslinker

Active Ingredient Chemical

Name Bisphenol AF

Synonyms 4,4'-(Hexafluoroisopropylidene)diphenol

2,2-Bis(4-hydroxyphenyl)hexafluoropropane

Molecular Weight 336.229119 [g/mol]

Molecular Formula C15H10F6O2

H-Bond Donor 2

H-Bond Acceptor 8

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RHENOFLUOR™ OPC

FKM Accelerator

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RHENOFLUOR™ OPC – FKM Accelerator

In FKM Gum Rubbers: approx. 2.1 phr in combination with

approx. 2.5 phr of RHENOFLUOR™ BF6 (Bisphenol AF).

Mode of ActionRHENOFLUOR™ OPC is a “sulfur safe” organo-phosphonium

accelerator for fl uoroelastomer rubbers. RHENOFLUOR™

OPC can be utilized as an accelerator for both di-polymer

and ter-polymer types, requiring a quick incorporation into the

fl uoroelastomer matrix with excellent dispersion characteristics.

Due to the homogenous dispersion in the fl uoroelastomer

matrix, the occurrence of localized over-cured/under-cured

zones is avoided. This ensures an improved resistance against

ageing and dynamic fatigue. RHENOFLUOR™ OPC provides

vulcanizates with excellent physical properties and compres-

sion set characteristics.

Processing RHENOFLUOR™ OPC contains special dispersing agents,

allowing quick absorption and excellent dispersion into fl uo-

roelastomer rubber types. The utilization of RHENOFLUOR™

OPC ensures clean, environmentally-friendly handling com-

bined with ease of incorporation and a rapid, homogenous

dispersion.

“Sulfur Safe” Technology Rhein Chemie Corporation’s proprietary organo-phosphonium

derived accelerator utilized in the RHENOFLUOR™ OPC

provides the end-user protection against the critical variable

of sulfur contamination, which will prevent and/or retard cure.

Appearance / Form

Off-white opaque granules



Name Phosphonium, tributyl-2-propenyl-, chloride

Synonyms Allyltributylphoshonium chloride

Tributyl-prop-2-enyl-phosphanium chloride


Molecular Formula C15H32CIP

H-Bond Donor 0

H-Bond Acceptor 1

RHENOFLUOR™ CC – FKM Curative Complex

In FKM Gum Rubbers: approx. 1-3 phr

Note: With the use of RHENOFLUOR™ CC the physical properties and compound rheology can be easily modifi ed with the use of additional RHENOFLUOR™ BF6 (50% active Bisphenol AF, BF6 Dispersion).

“Sulfur Safe” TechnologyRhein Chemie Corporation’s proprietary organo-phosphonium

derived accelerator utilized in the RHENOFLUOR™ CC

provides the end-user protection against the critical variable

of sulfur contamination, which will prevent and/or retard cure.

Molecular Powdered Dispersion – MPDRHENOFLUOR™ CC Curative Complex introduces new

product form technology in the fi eld of fl uoroelastomer curing.

This revolutionary new technology combines the advantages

of an easily weighed and handled non-dusting high bulk density

powder with “industry standard” melt-complex technology.

This delivery technology eliminates the “mill-popping”

commonly associated with melt-complex mill addition.

Appearance / Form

Off-white dustless powder

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RHENOFLUOR™ CC

FKM Curative Complex



Name Phosphonium, tributyl-2-propenyl-, chloride

Synonyms Allyltributylphoshonium chloride

Tributyl-prop-2-enyl-phosphanium chloride


Molecular Formula C15H32CIP

H-Bond Donor 0

H-Bond Acceptor 1


Name Bisphenol AF

Synonyms 4,4'-(Hexafl uoroisopropylidene)diphenol

2,2-Bis(4-hydroxyphenyl)hexafl uoropropane


Molecular Formula C15H10F6O2

H-Bond Donor 2

H-Bond Acceptor 8

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Product Line Benefits

RHENOFLUOR™ binder technology incorporates

special dispersing agents, allowing quick absorption

and excellent dispersion into fluoroelastomer rubbers.

Due to excellent dispersion and solubility in fluoroelas-

tomer polymer, a constantly high quality is achieved.

Mill-popping is eliminated allowing for mixing cycle

time reductions.

Proprietary organo-phosphonium technology provides

“sulfur-safe” fluoroelastomer curing.

Product lifetimes are improved thanks to improved

resistance to thermal ageing.

Product properties remain unchanged over longer

periods of time.


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Technical Data/Information


Comparative Analysis of Curative Addition in 66% Fluorine Dipolymer Fluoroelastomer

RhenofluoR™ CC Competitive Melt Complex Competitive Single Ingredients

BF6 - Crosslinker level, phr 1.28 1.28 1.29 1.29 1.25 1.25

Onium - Accelerator level, phr 0.21 0.21 0.36 0.36 0.5 0.5

Curative Addition: BEFORE/AFTER N990 AFTER BEFORE AFTER BEFORE AFTER BEFORE

Dyneon® FC 2230 100 100 100 100 100 100

N990 Carbon Black 30 30 30 30 30 30

Ca(OH)2

6 6 6 6 6 6

MgO 3 3 3 3 3 3

RHENOFLUOR™ CC 2.0 2.0 — — — —

Competitive Melt Complex — — 1.65 1.65 — —

Competitive BF6 Dispersion — — — — 2.5 2.5

Competitive Onium Dispersion — — — — 1.5 1.5

ToTAl 142.49 142.49 142.3 142.3 144.75 144.75

MDR @ 177°C (350°f), 12 minute test


Minimum Torque, ML, in/lb 1.2 1.1 1.1 1.2 1.2 1.2

Maximum Torque, MH, in/lb 15.5 15.4 14.6 14.4 13.1 13.1

Ts2, minutes 1.0 1.0 1.1 1.1 0.9 0.9

t'50, minutes 1.2 1.3 1.3 1.3 1.1 1.1

t'90, minutes 1.9 2.0 2.2 2.1 1.9 1.8

Mooney Scorch @ 121°C (250°f)


Minimum, MU 38 38 38 39 38 38

T3, minutes 55 58 56 58 52 53

T10, minutes > 60 > 60 > 60 > 60 > 60 > 60

T18, minutes > 60 > 60 > 60 > 60 > 60 > 60

Comparative Analysis of Curative Addition in 66% Fluorine Dipolymer Fluoroelastomer

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* These items are provided as general information only. They are approximate values and are not considered part of the product specifi cations

RhenofluoR™ CC Competitive Melt Complex Competitive Single Ingredients

Physical properties*, Press cure 10 minutes at 177°C (350°f)


Durometer, shore A 70 71 69 70 70 71

Tensile, psi (MPa) 1740 1755 1570 1620 1600 1650

Elongation, % 330% 335% 285% 290% 310% 300%

100% Modulus, psi (MPa) 520 520 510 525 525 560

Physical properties*, Post cured 16 hours at 232°C (450°f)



Tensile, psi (MPa) 2110 2200 1885 1925 1980 1850

Elongation, % 310% 230% 210% 215% 210% 230%

100% Modulus, psi (MPa) 700 675 645 635 610 665

heat Aged, per ASTM D573, 70 hrs. at 250°C (482°f)



Tensile, psi 1955 1820 1620 1710 1730 1635

Elongation, % 210% 240% 200% 210% 235% 225%

100% Modulus, psi 710 655 645 615 620 605

Change in Durometer, pts 1 0 1 1 1 0

Change in Tensile, % -7% -17% -14% -11% -13% -12%

Change in Elongation, % -32% 4% -5% -2% 12% -2%

Compression Set, per ASTM D395 plied disc


22 hrs at 175°C, % set 8% 8% 8% 8% 8% 8%

22 hrs at 200°C, % set 10% 10% 10% 10% 11% 10%

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RHENOFLUOR™ Curative Data

Rhein Chemie RhenofluoR™ CC RhenofluoR™

Bf6 & oPCCompetition

#1 #2 #3 #4 #5 #6

Dyneon® FC 2230 100 100 100 100 97.3 97.8

N990 Carbon Black 30 30 30 30 30 30

Ca(OH)2

6 6 6 6 6 6

MgO 3 3 3 3 3 3

RHENOFLUOR™ CC 1.5 2.0 2.5 3.0 – –

RHENOFLUOR™ BF6 – – – – 2.5 –

RHENOFLUOR™ OPC – – – – 2.1 –

Competitive BF6 Dispersion – – – – – 2.5

Competitive Onium Dispersion – – – – – 1.5

ToTAl 140.5 141 141.5 142 140.9 140.8


#1 #2 #3 #4 #5 #6

Minimum Torque, ML, in/lb 1.2 1.2 1.2 1.2 1.3 1.3


Ts2, minutes 1.1 1.0 1.0 1.0 1.2 1.1

t'50, minutes 1.4 1.2 1.2 1.2 1.6 1.4

t'90, minutes 2.2 1.9 1.9 2.0 2.4 2.4


#1 #2 #3 #4 #5 #6

Minimum Torque, ML, in/lb 1.1 1.1 1.1 1 1.1 1.2


Ts2, minutes 0.7 0.6 0.6 0.6 0.7 0.7

t'50, minutes 0.8 0.7 0.7 0.7 0.9 0.8

t'90, minutes 1.3 1.0 0.9 0.9 1.3 1.2

Mooney Scorch @ 121°C (250°f)

#1 #2 #3 #4 #5 #6

Minimum, MU 39 38 39 38 39 38

T3, minutes 39 55 55 52 58 30

T10, minutes 57 > 60 > 60 > 60 > 60 39

T18, minutes > 60 > 60 > 60 > 60 > 60 42

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RHENOFLUOR™ Curative Data

Rhein Chemie RhenofluoR™ CC RhenofluoR™

Bf6 & oPCCompetition

Physical properties*, Press cure 10 minutes at 177°C (350°f)

#1 #2 #3 #4 #5 #6


Tensile, psi (MPa) 1730 (11.9) 1740 (12.0) 1635 (11.3) 1725 (11.9) 1600 (11.0) 1600 (11.0)

Elongation, % 415% 330% 245% 220% 340% 310%

100% Modulus, psi (MPa) 370 (2.5) 520 (3.6) 630 (4.3) 830 (5.7) 490 (3.4) 525 (3.6)

Physical properties*, Post cured 16 hours at 232°C (450°f)

#1 #2 #3 #4 #5 #6


Tensile, psi (MPa) 1970 (13.6) 2110 (14.5) 2015 (13.9) 1950 (13.4) 2130 (14.7) 1980 (13.6)

Elongation, % 260% 210% 175% 140% 220% 210%

100% Modulus, psi (MPa) 495 (3.4) 700 (4.8) 870 (6.0) 1270 (8.8) 670 (4.6) 610 (4.2)

heat Aged, per ASTM D573, 70 hrs. at 250°C (482°f)

#1 #2 #3 #4 #5 #6


Tensile, psi 1915 1955 2000 1850 1930 1730

Elongation, % 275 210 185 150 235 235

100% Modulus, psi 450 710 865 1115 605 565

Change in Durometer, pts 2 1 1 0 1 0

Change in Tensile, % -3% -7% 1% -5% -9% -13%

Change in Elongation, % 6% 0% 6% 7% 7% 12%

Compression Set, per ASTM D395 plied disc

#1 #2 #3 #4 #5 #6

22 hrs at 175°C, % set 16% 8% 7% 7% 9% 16%

22 hrs at 200°C, % set 17% 10% 9% 11% 10% 21%

* These items are provided as general information only. They are approximate values and are not considered part of the product specifications


Global Rubber Performance

The manner in which you use and the purpose to which you put and utilize our products, technical assistance and information (whether verbal, written or by way of production evaluations), including any suggested formulations and recommendations are beyond our control. Therefore, it is imperative that you test our products, technical assistance and information to determine to your own satisfaction whether they are suitable for your intended uses and applications. This application-specifi c analysis must at least include testing to determine suitability from a technical as well as health, safety, and environmental standpoint. Such testing has not necessarily been done by us. Unless we otherwise agree in writing, all products are sold strictly pursuant to the terms of our standard conditions of sale. All information and technical assistance is given without warranty or guarantee and is subject to change without notice. It is expressly understood and agreed that you assume and hereby expressly release us from all liability, in tort, contract or otherwise, incurred in connection with the use of our products, technical assistance, and information. Any statement or recommendation not contained herein is unauthorized and shall not bind us. Nothing herein shall be construed as a recommendation to use any product in confl ict with patents covering any material or its use. No license is implied or in fact granted under the claims of any patent.

Health and Safety Information: Appropriate literature has been assembled which provides information concerning the health and safety precautions that must be observed when handling the Rhein Chemie Corporation prod-ucts mentioned in this publication. For materials mentioned which are not Rhein Chemie Corporation products, appropriate industrial hygiene and other safety precautions recommended by their manufacturers should be followed. Before working with any of these products, you must read and become familiar with the available information on their hazards, proper use, and handling. This cannot be overemphasized. Information is available in several forms, e.g., material safety data sheets and product labels. Consult your Rhein Chemie Corporation representative or contact the Product Safety and Regulatory Affairs Department at Rhein Chemie Corporation.

Note: The information contained in this publication is current as of October, 2008. Please contact Rhein Chemie Corporation to determine if this publication has been revised.

www.rheinchemie.com

Rhein Chemie Corporation145 Parker CourtChardon, OH 44024, USAPhone: +1-440-285-3547Fax: [email protected]

RHENOFLUOR™ is a trademark of Rhein Chemie Corporation.Dyneon is a registered trademark of 3M Company.AFLUX® is a registered trademark of Rhein Chemie Rheinau GmbH, Germany.

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RHENOFLUOR FKMrch.lanxess.com/content/uploads/2014/05/Rhenofluor... · 2017. 9. 1. · Dyneon® FC 2230 100 100 100 100 100 100 N990 Carbon Black 30 30 30 30 30 30 Ca(OH) 2 6 6 6