Overview
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.
Liquid farnesene rubber functions like a reactive plasticizer, but has a much higher molecular weight than normal plasticizers. The co-vulcanizable material significantly reduces migration, which improves the durability of rubber compounds. Its use during the rubber compounding stage significantly reduces processing time while maintaining the physical properties of rubber compounds. Lower processing costs are the result.
Examples
| Category | Type | Grade | Structure | Viscosity (Pa• s, 38ºC) | Glass transition temperature (ºC) |
|---|---|---|---|---|---|
| L-IR (Isoprene) | Homopolymer | L-IR-30 L-IR-50 |  | 70 500 | -63 -63 |
| Block copolymer | L-IR-390 |  | 400 | -95 | |
| Carboxylated | L-IR-403 |  | 200 | -60 | |
| L-IR-410 |  | 430 | -59 | ||
| UV curable | UC-102M |  | 30 | -60 | |
| UC-203M | 190 | -60 | |||
| L-BR (Butadiene) | Homopolymer | L-BR-302 L-BR-307 L-BR-305 |  | 0.6 1.5 40 | -85 -95 -95 |
| L-BR-352 L-BR-361 |  | 6 5.5 | -60 -49 | ||
| Silane-modified | GS-L-BR-114 |  | 6 | -50 | |
| L-SBR (St/Bd) | Random copolymer | L-SBR-870 L-SBR-822 L-SBR-841N |  | 250 8.3 100 (at 60°C) | -18 -60 -6 |
Further information about Liquid Rubber
