# Polybutadiene rubber and Polystyrene and EPS

Their prices have moved together.

Source page: https://www.materialinsights.org/links/polybutadiene-rubber-and-polystyrene-and-eps/

[Polybutadiene rubber](https://www.materialinsights.org/chemicals/polybutadiene/) (chemical) and [Polystyrene and EPS](https://www.materialinsights.org/chemicals/polystyrene/) (chemical): 1 relationship.

## How they are linked

### 1. Price link: additive

*Cost and price · Strong · Both ways*

High-impact polystyrene contains polybutadiene rubber for toughness, so rubber costs matter for that grade. The synthetic rubber proxy moves with the resin proxy at 0.38 monthly and 0.60 yearly. General-purpose grades contain none.

- **0.38** monthly change correlation
- **0.60** 12-month change correlation
- **0.66** fitted elasticity

Built from the site data on production routes, energy flows, industry value chains, input-output tables and prices.