Kuraray Liquid Rubber

KURARAY LIQUID RUBBER

Stick to it – KURARAY LIQUID RUBBER for long lasting product solutions

KURARAY LIQUID RUBBER includes Liquid Iso- prene Rubber (LIR) and Liquid Butadiene Rubber (LBR). These high-viscosity synthetic rubbers are based on isoprene, butadiene and styrene. They are colorless, transparent and almost entirely odorless with low VOC’s. KURARAY LIQUID RUBBER grades function as reactive plasticizers but have far higher mo- lecular weight than normal plasticizers. They are co-vulcanizable and reduce migration signif- icantly which improves the product’s shelf life. Using KURARAY LIQUID RUBBER during the rub-

ber compounding phase significantly reduces processing time while maintaining the rubber compounds’ physical properties. This results in a product with lower processing costs. The functionalized grades can be bonded to a wide variety of matrices for improved performance. Common applications include tires, belts, hoses and other rubber goods. In addition, KURARAY LIQUID RUBBER is used to produce high perfor- mance coatings, adhesives and sealants.

FOR TIRES

FOR RUBBER APPLICATIONS

FOR ADHESIVES

FOR COATINGS & SEALANTS

KURARAY LIQUID RUBBER IN TIRES KURARAY LIQUID RUBBER is a favored component in the pro- duction of high performance tires. It reduces Mooney viscos- ity which minimizes migration while improving the processa- bility of the rubber compound in tires. KURARAY LIQUID RUBBER enhances tire performance signifi- cantly by simultaneously controlling the balance of grip, fuel efficiency and wear resistance. KURARAY LIQUID RUBBER is crosslinkable for superior performance and longer shelf life. ▪ Functionalized grades improve adhesion to metal ▪ Co-vulcanizable characteristics prevent oil migration ▪ Improved silica/carbon black dispersion in certain formulations ▪ Glass transition temperature (Tg) control enables grip control in a wide temperature range

KURARAY LIQUID RUBBER offers various application possibilities for tire manufacturing. Different grades can be processed in certain tire parts to contribute to a long lasting high quality product.

1

5

Beadfiller/APEX: High hardness with excellent processability Improved dimensional stability Better filler dispersion Applicable grades: LIR-50

Cushion: Enhanced surface smoothness of calendered sheet Reduced extrusion temperature Better green tackiness Improvement of dynamic properties Applicable grades: LIR-50, LBR-302, LBR-307

2

Side wall / Carcass: Improved dimensional stability Enhanced surface smoothness of calendered sheet

4

5

Lower mill shrinkage Better green tackiness Higher production rates Applicable grades: LIR-50, LBR-302, LBR-307

1

3

Rim cushion: Good balance of processability and physical properties Improved abrasion resistance Applicable grades: LIR-50

4

3

Tread: Improved dynamic and physical proterties (tanδ) Excellent abrasion resistance, wet and ice grip Excellent extrudability Applicable grades: LIR-50, LBR-302, LBR-307, L-SBR-820, L-SBR-841

2

KURARAY LIQUID RUBBER IN RUBBER APPLICATIONS

KURARAY LIQUID RUBBER is processed in various rubber goods besides tires. Typical applications include anti-vibration rub- ber compounds, fenders, conveyer belts, rubber hoses and gaskets. LIR and LBR deliver a balanced performance includ- ing longer shelf life with minimal migration. ▪ Selected grades are suitable for EPDM applications ▪ Improved processability due to lower Mooney viscosity ▪ Co-vulcanizable with base rubber such as NR/IIR/SBR/ BR/EPDM which reduces migration ▪ Improved adhesion to metal possible with functional- ized grades ▪ Colorless and odorless with low VOC’s

The following formulation illustrates the benefit of using LIR-50 in an extrusion.

LIR-50 formulation

Formulation

Control 1 Control 2

66

NR (RSS #3)

70

66

30

SBR 1502

30

30

-

Process Oil (Aromatic)

-

4

4

KURARAY LIQUID RUBBER LIR-50

-

-

50

CB (FEF)

50

50

[Mixing] 1 BR Banbury Mixer

5

ZnO No. 1

5

5

: 6min : 10min

2 8 inch Roll

2

Stearic Acid

2

2

[Garvey die extrusion test (ASTM D2230)] (Test Conditions) • Cylinder temp.

2.2

Sulfur

2.2

2.2

1.2

Accelerator CBS

1.2

1.2

: 90°C

• Die temp. : 90°C • Screw rotation speed : 20rpm

1

Antioxidant IPPD

1

1

Extruded Sample

Edge* Surface*

Control 1

6

B

*)

EDGE

SURFACE

10

A

(excellent)

(excellent)

Control 2

6

B

LIR-50 formulation

10

A

1

E

(poor)

(poor)

KURARAY LIQUID RUBBER IN ADHESIVES

KURARAY LIQUID RUBBER is commonly used in adhesive appli- cations such as pressure sensitive adhesives and hot melts. The lower molecular weight grades improve tack and adhe- sive properties. The UV crosslink-able grades provide excel- lent flexibility, tack, low shrinkage and moisture resistance which are ideal for flexible electronic applications. ▪ Preservation of rubber-like properties at low temperatures ▪ Colorless, transparent, odorless without halogen residuals ▪ Certain grades are suitable for food contact applications ▪ Improved adhesion to metal and glass possible with functionalized grades ▪ Crosslinkable by UV with methacrylic grades

Suitable grades of KURARAY LIQUID RUBBER in adhesives

LIR-30 LIR-50

LBR-302 LBR-307 LBR-305 LBR-352 LBR-361

LIR-390 LIR-290 LIR-403 LIR-410

UC-102M UC-203M

LIR-700 L-SBR-820 L-SBR-841

NR,IR

▪ ▪ ▪

▪ ▪ ▪

SBR

Solution

IIR

NR, SBR latex

Latex

SIS

▪ ▪

▪ ▪

▪ ▪

▪ ▪ ▪ ▪

▪ ▪

SBS

Hot melt

SEBS, SEPS

EVA

NR

▪ ▪ ▪

NR/SBR

KURARAY LIQUID RUBBER LIR-403, LIR-410 as base rubber

Crosslink

UV radiation

▪ : applicable

KURARAY LIQUID RUBBER IN COATINGS & SEALANTS

KURARAY LIQUID RUBBER is also used in coatings and seal- ants. Typical applications include automotive, construction and marine coatings and sealants. KURARAY LIQUID RUBBER‘s narrow molecular weight distri- bution ensures minimal residuals for improved quality. ▪ Colorless, transparent and odorless without halogen residuals ▪ Selected grades are suitable for food contact applications ▪ Low glass transition temperature (Tg) improves low temperature properties ▪ Isoprene/butadiene block copolymer grade, LIR 390, provides faster reactivity

Grade name

Category

Type

Structure

LIR-30

CH 3

Homopolymer

LIR (Isoprene)

CH 2 C

CH CH 2

n

LIR-50

CH 3

Block Copolymer

LIR-390

CH 2 CH CH CH 2

CH 2 C

CH CH 2

n

m

CH 3

CH 3

LIR-403

CH 2 C

CH CH 2

CH 2 C

CH CH

m

n

O

O O

Carboxylated

CH 3

CH 3

CH 2 C

CH CH 2

CH 2 C

CH CH

LIR-410

HC CH 2

m

n

O C HO

C O

O CH 3

UC-102M

CH 3

CH 3

CH 2 C

CH CH 2

CH 2 C

CH CH

UV Curable

HC CH 2

m

n

O CH 2 CH 2 O C O

C CH 3

O C HO

C O

UC-203M

CH 2

CH 3

CH 3

Hydrogenated

LIR-290

CH 2 C

CH CH 2

CH

2 CH

CH 2 CH 2

m

n

CH 3

Latex

LIR-700

CH 2 C

CH CH 2

n

LBR-302 LBR-307 LBR-305

Homopolymer

CH 2 CH CH CH 2

LBR (Butadiene)

n

LBR-352

CH 2 CH CH CH 2

CH 2 CH CH CH 2

LBR-361

l

m

n

L-SBR (Styrene/ Butadiene)

Random Copolymer

L-SBR-820

CH 2

CH CH CH 2

CH 2

CH CH 2 CH CH CH 2

L-SBR-841

l

m

n

Number of functional groups per molecule

Glass Transition Temp. (°C)

Molecular Weight

Viscosity (Pa • s at 38°C)

Features and main applications

▪ Reactive plasticizer (NR, IR, SBR, BR, IIR etc.) ▪ Tire, conveyor belt, rubber goods ▪ Pressure sensitive adhesives/hot melts ▪ Automotive sealants, coatings and adhesives ▪ Plasticizer for printing plates ▪ Binder for brake pads, grinding wheels, etc.

-

28,000

70

-63

-

54,000

500

-63

▪ Hot melt adhesives/PSA (SIS, SBS, EVA) ▪ Automotive sealants, coatings and adhesives

-

48,000

400

-95

3

34,000

200

-60

▪ Improves adhesion to metals and fibers ▪ Automotive sealants, coatings and adhesives ▪ Hot melt adhesives/PSA (SIS, SBS, EVA) ▪ Binder for brake pads, grinding wheels, etc.

10

30,000

430

-59

2

17,000

30

-60

▪ Low temperature reactivity ▪ Crosslinkable using UV ▪ Pressure sensitive adhesives (UV curing adhesives)

3

35,000

190

-60

▪ Reactive plasticizer (EPDM) ▪ Hot melt adhesives (SEBS, SEPS) ▪ Superior heat and weather resistance ▪ Good compatibility with NR latex ▪ Reactive plasticizer (NR latex, SBR latex) ▪ Adhesives ▪ Reactive plasticizer (NR, IR, SBR, BR etc.) ▪ Tire, printing plate ▪ Coagent for EPDM (peroxide curing) ▪ Automotive sealants, coatings and adhesives ▪ Hot melt/PSA ▪ Vinyl content: 5-70% ▪ Thermoset PU modification ▪ Good compatibility with S-SBR and E-SBR ▪ Tire and rubber goods ▪ Automotive sealants, coatings and adhesives ▪ Partially hydrogenated grades are available ▪ Damping material

-

31,000

1,200

-59

7.5 (at 25°C) (Solid cont.= 60wt%)

-

28,000

-63

-

5,500 8,000 26,000

0.6 1.5 40

-85 -95 -95

-

9,000

6

-60

-

5,500

5.5

-49

-

8,500

350

-14

-

10,000

100 (at 60°C)

-6

Adding value to your products – worldwide

Tokyo, Japan

Frankfurt, Germany

Kashima, Japan

Houston, Texas, USA

Seoul, South Korea

Shanghai, China

New Delhi, India

São Paulo, Brazil

Singapore

Sales office Manufacturing base

Kuraray is a world leader in specialty chemicals and functional materials. We are committed to devel- oping products that ensure quality and value while helping our customers differentiate themselves from their competition. The history of Kuraray’s Elastomer Division started in 1972 with the production of polyisoprene rub- ber and the development of new rubber materials based on Isoprene in the Kashima Plant. From the

first production line, the Elastomer Division con- tinuously grew and invented new products such as KURARAY LIQUID RUBBER, ISOBAM™, SEPTON™, HYBRAR™, and KURARITY™. Kuraray strives to develop new and innovative high performance products for customers around the globe. If you would like to know more about Kur- aray’s Elastomer products please also visit our website www.elastomer.kuraray.com

Kuraray Co., Ltd.

Kuraray Europe GmbH

Kuraray America, Inc.

Kuraray Trading (Shanghai) Co., Ltd.

Ote Center Bldg. 1-1-3, Otemachi Chiyoda-ku

Philipp-Reis-Straße 4 65795 Hattersheim am Main Germany Phone: +49 69 305 35849 elastomer@kuraray.com

2625 Bay Area Blvd., Suite 600, Houston TX 77058 United States of America Phone: +1-281 283 1711 septon.sales@kuraray.com

Unit 2106, 2 Grand Gateway 3 Hongqiao Road, Xuhui District Shanghai 200030, China Phone: +86 21 6407 9182 elastomer.china@kuraray.com

Tokyo 100-8115, Japan Phone: +81 3 6701 1616 kuraray.liquidrubber@kuraray.com

Disclaimer: Precautions should be taken in handling and storage. Please refer to the appropriate Safety Data Sheet for further safety information. In using KURARAY LIQUID RUBBER, please confirm related laws and regulations, and examine its safety and suitability for the application. For medical, health care and food contact applications, please contact your KURARAY LIQUID RUBBER representative for specific recommendations. KURARAY LIQUID RUBBER should not be used in any devices or materials intended for implantation in the human body. Nothing contained herein constitutes a license to practice under any patent and it should not be construed as an inducement to infringe any patent and the user is advised to take appropriate steps to be sure that any proposed use of the product will not result in patent infringement. 01/2020

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