Lyondell Announces BDO & Derivatives Hikes

June 1, 2018

Subject: Lyondell Chemical Company; 1, 4 Butanediol and Derivatives Price Increase

Dear Valued Customer,

Effective July 1, 2018 or as contracts allow, Lyondell Chemical Company will increase its prices
for 1,4 Butanediol and Derivatives Products as shown below.

Chemical Name Price Increase
1,4 Butanediol (BDO) $0.07/LB
2-Methyl- 1,3-Propanediol (MP Diol) $0.07/LB
N-Methyl-2-Pyrrolidone (NMP)-Industrial Grade $0.10/LB
N-Methyl-2-Pyrrolidone (NMP)-Electronic Grade $0.10/LB
Tetrahydrofuran (THF) $0.08/LB
Polytetramethylene Glycol, PolyMEG® P1000 $0.10/LB
Polytetramethylene Glycol, PolyMEG® P2000 $0.10/LB
Polytetramethylene Glycol, PolyMEG® 650 $0.13/LB
Styrene Allyl Alcohol (SAA Co-Polymers) $0.05/LB

Our acceptance of orders submitted prior to the increase date will be subject to our ability to
supply. We appreciate the confidence you have placed in us as a supplier, and we look forward
to our continuing business relationship. As always, your account manager is available to work
with you or answer any questions you may have.