Product Information

Liquid rubber that boosts productivity while maintaining the properties of vulcanized rubber

Chemicals/Elastomers/Rubber Isoprene Derivatives

KURARAY LIQUID RUBBER™

General name
Liquid rubber
Sales format
Liquid

High-viscosity synthetic rubber KURARAY LIQUID RUBBER™ products are based on isoprene, butadiene and styrene. They are colorless, transparent, almost entirely odorless and low VOC. Functionalized grades are available as reactive plasticizers with far higher molecular weight than normal plasticizers. They are co-vulcanizable and significantly reduce migration.

Applications

Tires

Belts

Hoses

Rubber goods

Tape

Shoes

Adhesives

Coatings

Sealants

Flexo printing plate

Additives for asphalt

Lubricants and bonding agents

Characteristics

Colorless, transparent and low VOC.

Co-vulcanizable and reduces migration to improve shelf life.

Enhances processability.

Reduces mixing time.

Strong tack and adhesive properties.

Functionalized grades available.

Low glass transition temperature (Tg).

Rubber-like soft properties at low temperatures.

Standard grades and properties

Category Type Grade Structure Number of functional groups per molecule Molecular weight Viscosity
(Pa• s, 38ºC)
Glass transition temperature (ºC)
LIR (Isoprene) Homopolymer KL-10*
LIR-30
LIR-50
-
-
-
10,000
28,000
54,000
3
70
500
-63
-63
-63
Block copolymer LIR-310 - 32,000 1,400 -63
LIR-390 - 48,000 400 -95
Carboxylated LIR-403 3 34,000 200 -60
LIR-410 10 30,000 430 -59
UV curable UC-102M 2 17,000 30 -60
UC-203M 3 35,000 190 -60
Hydrogenated LIR-290 - 31,000 1,200 -59
Latex LIR-700 - 28,000 7.5
(at 25ºC)
(Solid cont.= 60wt%)
-63
LBR (Butadiene) Homopolymer LBR-302
LBR-307
LBR-305
LBR-300*
- 5,500
8,000
26,000
45,000
0.6
1.5
40
280
-85
-95
-95
-95
LBR-352
LBR-361
- 9,000
5,500
6
5.5
-60
-49
L-SBR (St/Bd) Random copolymer L-SBR-820
L-SBR-841
-
-
8,500
10,000
350
100 (at 60ºC)
-14
-6

*Developmental grades

Catalogues/technical data

Related website

Contact us

Click here for inquires (KURARAY LIQUID RUBBER™)
Polymer Marketing and Sales Department,
Elastomer Division
Ote Center Building, 1-1-3, Otemachi, Chiyoda-ku, Tokyo 100-8115, Japan
Tel.: +81-3-6701-1616
E-mail: elastomer.info@kuraray.com