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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×

×

◎

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NRIR◎

◎

◎

◎

◎

○

×

◎

×

×

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○

BR△

○

◎

△

◎

○

×

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×

×

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CR○

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○

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○

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○

△

○

×

◎

◎

EP△

○

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△

○

◎

◎

◎

×

△

◎

◎

IIR△

○

×

○

△

◎

◎

◎

×

△

◎

◎

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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EP123

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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

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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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