3
'14.10 NE 50
Ethylene-Propylene Rubber
JSR EPSpecialty Elastomer Dept.Petrochemical Products Div.Shiodome Sumitomo Bldg., 1-9-2 Higashi-Shinbashi, Minato-ku, Tokyo 105-8640, JapanTelephone:81-3-6218-3623Facsimile :81-3-6218-3697http://www.jsr.co.jp
JSR (Shanghai) Co., Ltd.Rm 606 SMEG PLAZA 1386 Hongqiao Road,Shanghai 200051, ChinaTelephone:86-21-6278-7600 Facsimile :86-21-6278-7604
To JSR Elastomer Product Information
To the JSR NBRTechnology Catalog
This information contained herein is given in good faith but without any guarantee or warranty and may involve proprietary rights of third parties. Our advice given in this information does not release you from the obligation to check its validity and to test our products as to their suitability for the intended process and uses. The application, use and processing of our products and the products manufactured by you on the basis of our technical advice are beyond our control and, therefore, entirely on your own responsibility. Our products are sold only in accordance with Product Specification separately issued by us.
This printed document uses FSC®-certified paper that includes materials from properly managed forests, printed with vegetable oil ink.Printed on paper made with wood from forest thinning.“Morino Chonai-Kai” (Forest Neighborhood Association)̶Supporting sound forest management.
About JSRSince JSR's success as the first Japanese producer of synthetic rubber in 1960, the company has continued to supply the world market with synthetic rubber in the key categories of EP, NBR, SBR, BR, IR, and IIR as an “Integrated manufacturer of synthetic rubber.” JSR also distills butadiene (a major raw material of synthetic rubber) in-house, and Elastomix, which is already JSR Group company, manufactures and distr ibutes rubber compounds. A vertical business deployment that is not limited to just synthetic rubber enables JSR to provide its products in a stable manner.
Ethylene-Propylene Rubber (EPM/EPDM)
Chemical Structure and Characteristics of EPM/EPDM
■Ethylene-Propylene Copolymer (EPM)
A signature special-purpose synthetic rubber that offers superior heat, weather, and ozone resistance.EPM/EPDM is used in automobile parts such as packing and hoses, as well as in electric wires, belts, and waterproof sheets, and as a plastic modifier.
Synthesized from only ethylene and propylene, the ethylene-propylene copolymer (EPM) molecule lacks a double bond. For this reason, peroxide is ordinarily used for crosslinking, resulting in material that is characterized by superior heat resistance.
■Ethylene-Propylene Terpolymer (EPDM)The introduction of an unsaturated compound with a double bond as a third component to the crosslinking copolymer of ethylene and propylene enables ordinary sulfur vulcanization. JSR uses ENB (ethylidene norbornene) as the third component of its EPDM, and this allows it to be vulcanized more quickly compared to EPDM produced using a different third component. The high-diene type offers a particularly fast vulcanization rate, and is suited for use in a blend with diene-based rubber such as SBR.
Kashima Plant EP Production Line
Environmental Tolerance
PhysicalProperties
Oil Resistance
Gasoline, Light OilBenzene, Toluene Alcohol
Heat ResistanceOzone ResistanceCold Resistance
Alkali Resistance
Tensile Strength
◎: Excellent ○: Good △: Fair ×: Poor
ElongationRebound ResilienceTear StrengthCompression Set
NBR○
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×
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SBR◎
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×
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×
×
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NRIR◎
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×
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×
×
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BR△
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×
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×
×
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CR○
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×
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EP△
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×
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IIR△
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×
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×
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CH2 CH2 CH2 CH
CH3
l m n
CH3
CH2 CH2 CH2 CH
CH3
l m n
CH3Roll Processability
Extrusion Processability
Green
Strength
VulcanizationRate
Elongation
TensileStrength
Compression Set
Heat Generation
Flex Cracking
Heat and Aging Resistance
Cold Resistance
Weather and
Ozone Resistance
High Filler Loading
Abrasion
HardnessM
odulus
ProcessabilityNon-vulcanized
PolymerCharacteristics
Vulcanized Polymer Characteristics
Poor Poor
High High High
LowLow Low Good
Good Good Good Good
Poor
High Fast High High High
Low
GoodGood Good
Poor
Good Good
Fast High High
LowLow Low Good
Good Good
Poor
※This chart shows typical trends, and does not describe the behavior or characteristics of all products.
Packing Hoses
■Comparison of Properties between Different Polymers
■Relationship between EP Composition and Characteristics
1 2
MooneyViscosityEthyleneContent
ENB Content
Vanadium and metallocene are the two main types of catalysts used for EP polymerization, and JSR uses a vanadium catalyst. Compared to EP produced using a metallocene catalyst, EP produced using a vanadium catalyst provides a high level of rubber elasticity even under harsh conditions at extremely low temperatures.
Advantages of JSR EP Representative JSR EP Types
30ー20 ー30 ー60 ー50
Temperature (℃)Temperature (℃)ー30ー40 ー20 ー10 0
40
50
60
70MetalloceneVanadium
Com
pres
sion
Set (
%)
20
40
60
80
Elon
gatio
n Re
cove
ry R
atio
(%)
Exce
llent
Excellent
-2 points
-5 points
MetalloceneVanadium
0
TR TestsCompression Set Test under Low-Temperature Conditions
Polymer CharacteristicsIn addition to excellent general characteristics including heat resistance, weather resistance, ozone resistance, chemical resistance, and electrical properties, these grades of EP also offers a faster vulcanization rate, lower compression set, and stronger resistance to flex cracking than general-purpose EP. JSR EP grades are suited to application in functional parts such as packing or diaphragms.EP331 and EP342, in particular, offer the best compression set and cold resistance among any of JSR EP grades through the use of array operations with ethylene and propylene. Many of JSR grades have a low Mooney viscosity (MV), and JSR EP lineup offers an excellent balance of both product properties and processability.
Cold Resistance
Roll Processability
ExtrusionProcessabilityHigh Filler Loading
VulcanizationRateFlex Cracking
TensileStrength
Cold Resistance
ElongationCompression Set
*Compared with Other JSR Products; 5 (Good) ⇔ 1 (Poor)
Roll Processability
ExtrusionProcessabilityHigh Filler Loading
VulcanizationRateFlex Cracking
TensileStrength
Cold Resistance
ElongationCompression Set
*Compared with Other JSR Products; 5 (Good) ⇔ 1 (Poor)
[Vulcanization]
[Combination] EP100, zinc oxide 5, stearic acid 1, HAF carbon 35, talc 40, paraffinic oil 5, DM 2, M 0.5, TET 0.9, TRA 0.5, and sulfur 0.5, with a total of 190.4
170 ℃, 15 minutes
JSR EP is available in a full range of grades, including high-propylene and high-ENB grades offering excellent compression set, as well as high-ethylene and medium-ENB grades offering excellent extrusion processability and high filler loading.The EP123 grade uses JSR’s proprietary polymerization technology in a bimodal polymer design in order to offer a unique polymer not available from other companies.
A Diverse Product Lineup
12.0
10.0
8.0
6.0
4.0
2.0
0.040 45 50 55 60 65 70 75 80
Ethylene (%)
ENB(
%)
JSR GradesOther Company’sGrades
High-Propylene/High-ENB
High-Ethylene/Medium-ENB
Representative grades: EP331, EP342, EP33, EP35, EP65, T7241, and EP251
Polymer CharacteristicsIn addition to the general characteristics of EP, these grades also have excellent extrusion processability compared to a general-purpose EP, as well as high tensile strength, elongation, and filler loading.These grades are suited for use in window frames, hoses, injection-molded parts, and other products that feature extrusion and injection with high filler loading.Oil-extended grades keep the mechanical properties of tensile strength and elongation while offering an even higher filler loading than EP57F/C, thereby contributing to lower product costs.
EP123 is used by JSR’s proprietary polymerization technology in a bimodal polymer design.By combining the advantages of both low and high molecular weight ranges, this grade offers excellent processability as well as extrusion and flow properties, thereby enabling high filler loading. Gelation is rare during processing and extrusion, and EP123 features a high green strength. This grade is suited for use in applications that emphasize roll processability, rubber for compound chemical master batches, and high filler loading extrusion products.
These low-MV grades offer fast vulcanization rate and excellent extrusion, with an excellent surface texture after extrusion even with low filler loading in a low oil combination. These grades are suited for use in various extruded products, including electric wires and window frames.
Representative grades: EP57F/C, oil extended EP96, EP98, and EP501EC
5
4
3
2
1
0
5
4
3
2
1
0
High-Ethylene/Medium-ENB Types
EP123 EP21, EP51
Other Speciality Types
High-Propylene/High-ENB Types
3 4
Vanadium catalyst EP has a low compression set under low-temperature conditions. In addition, the difference tends to be greater as conditions grow harsher.
In terms of recovery properties, vanadium catalyst EP shows evidence of recovery from a low-temperature state at a faster stage than metallocene catalyst EP.
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JSR EP Product Lineup
EP659 / 53.5 / 48
ExtrusionStrengthProcessability
ProcessabilityVulcanization Rate Compression Set
Extrusion Cold Resistance Processability
Processability
Compression Set
Vulcanization RateCompression SetCold Resistance
No ENBExcellent Heat ResistanceFor PO Crosslinking*ML (1+4) 100 ℃
Slow Vulcanization Rate, Heat Resistance
Processability
Kneadability
High Filler Loading
High Filler Loading
High Green Strength High Filler Loading
High Filler Loading
High Filler Loading
Extrusion
Extrusion
EP104E3.5 / 52 / 58 / 30
EP103AF4.5 / 59 / 87
EP215.8 / 61 / 26
EP515.8 / 67 / 23
EP33111.3 / 47 / 23
T72417.7 / 52 / 27
EP338.1 / 52 / 28
EP2519 / 53.5 / 32
EP358.1 / 52 / 55.5
EP3429 / 47 / 31
EP224.5 / 54 / 27
EP255.1 / 58.5 / 63
Excellent ExtrusionHigh Filler Loading
Cold ResistanceHigh Filler LoadingHigh Physical Properties
EP107F4.5 / 62 / 75
EP1234.5 / 58 / 19.5
EP274 / 54.5 / 70
EP932.7 / 55 / 31
EP110 / 52 / 40*
EP57F/C4.5 / 67 / 58
Legend:Product Name
ENB/Ethylene/MVProduct Name
ENB/Ethylene/MV/ Oil Extended Amount
EP965.8 / 66 / 61 / 50
Oil ExtendedGrade
Non-oil ExtendedGrade
EP984.5 / 66 / 69 / 75
EP501EC5.5 / 65.5 / 54 / 40
High
High Medium Low
LowE N B
High
-Pro
pyle
ne T
ype
High
-Eth
ylen
e Ty
pe
EP244.5 / 54 / 42
5 6
Typical Properties Characteristics of JSR EP
GradeENB
Content(%)
MooneyViscosityML(1+4)
125℃
ProductForm
Polymer CharacteristicsEthyleneContent(%)
Elongation(%)
Hardness (DuroA)
200%Tensile Stress(MPa)
TensileStrength
(MPa)Oil ENB
EP331EP342
EP251EP65EP35EP33
T7241EP21*1
EP51*1
EP25
EP22*1
EP24EP123
EP103AFEP107FEP57F/C
EP27EP93
EP11*1
EP96EP501EC
EP98EP104E
High-ENB
Medium-ENB
Low-ENB
NoneMedium-
ENB
Low-ENB
Non-OilExtended
Oil Extended
11.39
99
8.18.17.75.8
5.8
5.1
4.54.54.5
4.54.54.54
2.7
05.85.54.53.5
4747
53.553.552525261
67
58.5
545458
596267
54.555
5266
65.56652
23
31
3248
55.5282726
23
63
2742
19.5
8775587031
40*2
61546958
BaleBale
BaleBaleBaleBaleBaleBale
Bale
Bale
BaleBaleBale
FriableFriable
Friable/CrumbBaleBale
BaleBale
CrumbBaleBale
Oil(PHR)
00
000000
0
0
000
00000
050407530
EP342 with extrusion characteristics and strength
EP65 with processabilityEP33 with compression setHigh-speed vulcanization, excellent compression set, cold resistance EP35 with processabilityEP33 with processability
Heat resistance, weather resistance, ozone resistance
Heat resistance, weather resistance, ozone resistance, excellent electrical propertiesHigh filler loadingHigh filler loading, kneadabilityHigh filler loadingHigh filler loading, excellent extrusion characteristics, cold resistance
8.99.5
9.48.37.87.48.25.9
6.4
7.4
6.46.97.5
7.47.87.47.46.4
3.99.310.25.48.1
11.312.4
13.315.715.713.713.812.7
13.7
18.1
13.715.714.2
19.621.120.618.115.1
20.623
20.318.119
280300
310340370360370440
440
430
420430390
440450450440450
650380350440430
7070
727273737473
77
71
707069
7170727067
6070695969
Vulcanization Properties
[Combination]About Kumho Polychem
※This data indicates representative physical properties, and does not signify product specifications.*1 Production of this grade is consigned to Kumho Polychem *2 ML(1+4)100℃ Ethylene Content + Propylene Content + Diene Content = 100 wt% (collected method)
7 8
High-speed vulcanization, excellent compression set, cold resistance, excellent extrusion characteristics, unplasticized compounds possible
Excellent extrusion characteristics and surface texture after extrusion, even at low filler loadingExcellent extrusion characteristics and surface texture after extrusion, even at low filler loading, excellent tensile characteristics Excellent extrusion characteristics, excellent extrusion characteristics even at high filler loading with white compound
EP24 low-MV versionRepresentative medium- ENB grade Bimodal grade, excellent processability, excellent adhesive properties, high filler loading, high green strength High filler loading, cold resistance High filler loading, cold resistance High filler loading, high green strengthEP24 high-MV version
Kumho Polychem Co., Ltd. (abbreviated as “KPC” below) is a Korean EP manufacturer, and is a joint venture established as a 50%/50% investment between JSR and Kumho Petrochemical.As the first manufacturer of EP in South Korea, KPC contributes a great deal to supply stability and the growth of the automobile industry in the South Korean market.JSR consigns the production of some of its EP grades to KPC.
EP11 100, zinc oxide 5, stearic acid 1, HAF carbon 50, naphthenic oil 10, dichromyl peroxide 2.7, and sulfur 0.3, with a total of 169.0Non-oil extended EP100, zinc oxide 5, stearic acid 1, HAF carbon 80, naphthenic oil 50, vulcanization accelerator TT1, vulcanization accelerator M0.5, and sulfur 1.5, with a total of 239.0Oil extended EP100 + oil extended amount, zinc oxide 5, stearic acid 1, HAF carbon 80, naphthenic oil 50 - oil extended amount, vulcanization accelerator TT1, vulcanization accelerator M0.5, and sulfur 1.5, with a total of 239.0 + oil extended amount (if the oil extended amount exceeds 50 parts, then the naphthenic oil is not added after mixing)
■Product Forms
Synthetic rubber in a solidified cuboid shape. Weight is different on each grade.
BaleSynthetic rubber in a solidified cuboid shape, formed at a lower pressure than a bale.Applying force causes the synthetic rubber to break into popcorn-shaped chunks (with diameters of around 1 to 2 cm), shortening the kneading time when compared to the bale form.Weight is different on each grade.
FriableSynthetic rubber in a popcorn shape (chunks with diameters of around 1 to 2 cm). Weight is different on each grade.
Crumb
■Packing Forms
Product is inserted into polyethylene bags, which are then packed into steel boxes (lids are cardboard).Since the steel boxes can be stored with the sides removed, this contributes to a saving in space after the product is used.
Steel BoxProduct is inserted into polyethylene bags, which are then packed in thick paper bags.
Bale/Paper Bag Product is packed in thick polyethylene bags.
Crumb Packing
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