Common use of Amendment and General Release Clause in Contracts

Amendment and General Release. The Benzene Sales Contract (Europe), dated as of April 1, 2010, between Dow Europe GmbH and Xxxxxx Europe GmbH (the “Initial Contract”), is hereby amended and restated in its entirety and shall no longer be in force and effect. Each of the Parties hereto hereby irrevocably, unconditionally and completely releases and discharges the other Party hereto and its respective affiliates, directors, officers, employees, agents, successors and assigns from all current and future rights, claims, causes of action, liabilities and obligations arising under or relating to the Initial Contract, including, without limitation, all claims and payments due thereunder. This release shall be effective as of 11:59p.m. Eastern Daylight Time on June 16, 2010. The Parties hereto hereby agree and acknowledge that there are no payments or other obligations outstanding as of 11:59p.m. Eastern Daylight Time on June 16, 2010 pursuant to the Initial Contract. DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx BY: /s/ Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx TITLE: Authorized Representative TITLE: Authorized Representative Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx TITLE: Authorized Representative Date Executed: June 17, 2010 [Signature Page to Amended and Restated Benzene Sales Contract (Europe)]

Amendment and General Release. The Benzene Ethylene Sales Contract (Europe), dated as of April 1, 2010, between Dow Europe GmbH and Xxxxxx Europe GmbH (the “Initial Contract”), is hereby amended and restated in its entirety and shall no longer be in force and effect. Each of the Parties hereto hereby irrevocably, unconditionally and completely releases and discharges the other Party hereto and its respective affiliates, directors, officers, employees, agents, successors and assigns from all current and future rights, claims, causes of action, liabilities and obligations arising under or relating to the Initial Contract, including, without limitation, all claims and payments due thereunder. This release shall be effective as of 11:59p.m1l:59p.m. Eastern Daylight Time on June 16, 2010. The Parties hereto hereby agree and acknowledge that there are no payments or other obligations outstanding as of 11:59p.m1l:59p.m. Eastern Daylight Time on June 16, 2010 pursuant to the Initial Contract. DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx BY: /s/ Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx TITLE: Authorized Representative TITLE: Authorized Representative Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx Xxxx NAME: Xxxxxxx Xxxxxxx Xxxx TITLE: Authorized Representative Date Executed: June 17, 2010 [Signature Page to Amended and Restated Benzene Ethylene Sales Contract (Europe)]

Amendment and General Release. The Benzene Butadiene Sales Contract (Europe), dated as of April 1, 2010, between Dow Europe GmbH and Xxxxxx Europe GmbH (the “Initial Contract”), is hereby amended and restated in its entirety and shall no longer be in force and effect. Each of the Parties hereto hereby irrevocably, unconditionally and completely releases and discharges the other Party hereto and its respective affiliates, directors, officers, employees, agents, successors and assigns from all current and future rights, claims, causes of action, liabilities and obligations arising under or relating to the Initial Contract, including, without limitation, all claims and payments due thereunder. This release shall be effective as of 11:59p.m. Eastern Daylight Time on June 16, 2010. The Parties hereto hereby agree and acknowledge that there are no payments or other obligations outstanding as of 11:59p.m. Eastern Daylight Time on June 16, 2010 pursuant to the Initial Contract. DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx BY: /s/ Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx TITLE: Authorized Representative TITLE: Authorized Representative Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx Xxxx NAME: Xxxxxxx Xxxxxxx Xxxx TITLE: Authorized Representative Date Executed: June 17, 2010 [Signature Page to Amended and Restated Benzene Butadiene Sales Contract (Europe)]

Amendment and General Release. The Benzene Ethylene Sales Contract (Europe), dated as of April 1, 2010, between Dow Europe GmbH and Xxxxxx Europe GmbH (the “Initial Contract”), is hereby amended and restated in its entirety and shall no longer be in force and effect. Each of the Parties hereto hereby irrevocably, unconditionally and completely releases and discharges the other Party hereto and its respective affiliates, directors, officers, employees, agents, successors and assigns from all current and future rights, claims, causes of action, liabilities and obligations arising under or relating to the Initial Contract, including, without limitation, all claims and payments due thereunder. This release shall be effective as of 11:59p.m. Eastern Daylight Time on June 16, 2010. The Parties hereto hereby agree and acknowledge that there are no payments or other obligations outstanding as of 11:59p.m. Eastern Daylight Time on June 16, 2010 pursuant to the Initial Contract. DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx BY: /s/ Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx NAME: TITLE: Authorized Representative TITLE: Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: NAME: TITLE: Date Executed: June 17, 2010 DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: BY: /s/ Xxxxxxx Xxxxxxx NAME: NAME: Xxxxxxx Xxxxxxx TITLE: Authorized Representative TITLE: Authorized Representative Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: NAME: TITLE: Date Executed: June 17, 2010 DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: BY: NAME: NAME: TITLE: TITLE: Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx Xxxx NAME: Xxxxxxx Xxxxxxx Xxxx TITLE: Authorized Representative Date Executed: June 17, 2010 [Signature Page to Amended and Restated Benzene Ethylene Sales Contract (Europe)]

Amendment and General Release. The Benzene Butadiene Sales Contract (Europe), dated as of April 1, 2010, between Dow Europe GmbH and Xxxxxx Europe GmbH (the “Initial Contract”), is hereby amended and restated in its entirety and shall no longer be in force and effect. Each of the Parties hereto hereby irrevocably, unconditionally and completely releases and discharges the other Party hereto and its respective affiliates, directors, officers, employees, agents, successors and assigns from all current and future rights, claims, causes of action, liabilities and obligations arising under or relating to the Initial Contract, including, without limitation, all claims and payments due thereunder. This release shall be effective as of 11:59p.m. Eastern Daylight Time on June 16, 2010. The Parties hereto hereby agree and acknowledge that there are no payments or other obligations outstanding as of 11:59p.m. Eastern Daylight Time on June 16, 2010 pursuant to the Initial Contract. DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx BY: /s/ Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx NAME: TITLE: Authorized Representative TITLE: Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: NAME: TITLE: Date Executed: June 17, 2010 [Signature Page to Amended and Restated Butadiene Sales Contract (Europe)] DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: BY: /s/ Xxxxxxx Xxxxxxx NAME: NAME: Xxxxxxx Xxxxxxx TITLE: Authorized Representative TITLE: Authorized Representative Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: NAME: TITLE: Date Executed: June 17, 2010 [Signature Page to Amended and Restated Butadiene Sales Contract (Europe)] DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: BY: NAME: NAME: TITLE: TITLE: Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx Xxxx NAME: Xxxxxxx Xxxxxxx Xxxx TITLE: Authorized Representative Date Executed: June 17, 2010 [Signature Page to Amended and Restated Benzene Butadiene Sales Contract (Europe)]

Amendment and General Release. The Benzene Sales Contract (Europe), dated as of April 1, 2010, between Dow Europe GmbH and Xxxxxx Europe GmbH (the “Initial Contract”), is hereby amended and restated in its entirety and shall no longer be in force and effect. Each of the Parties hereto hereby irrevocably, unconditionally and completely releases and discharges the other Party hereto and its respective affiliates, directors, officers, employees, agents, successors and assigns from all current and future rights, claims, causes of action, liabilities and obligations arising under or relating to the Initial Contract, including, without limitation, all claims and payments due thereunder. This release shall be effective as of 11:59p.m. 11:59 p.m. Eastern Daylight Time on June 16, 2010. The Parties hereto hereby agree and acknowledge that there are no payments or other obligations outstanding as of 11:59p.m. 11:59 p.m. Eastern Daylight Time on June 16, 2010 pursuant to the Initial Contract. DOW EUROPE GMBH XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx BY: /s/ Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx NAME: Xxxxxxx Xxxxxxx TITLE: Authorized Representative TITLE: Authorized Representative Date Executed: June 17, 2010 Date Executed: June 17, 2010 XXXXXX EUROPE GMBH BY: /s/ Xxxxxxx Xxxxxxx Xxxx NAME: Xxxxxxx Xxxxxxx Xxxx TITLE: Authorized Representative Date Executed: June 17, 2010 [Signature Page to Amended and Restated Benzene Sales Contract (Europe)]