From:                                         Riley, Marianne (MJ)

Sent:                                           Thursday, October 11, 2012 10:37 AM

To:                                               Alexander, Lillian (DEQ)

Subject:                                     ADCOTE 76R36B/9L7 Diisocyanate Information (1‐9QMS07)

Attachments:                          ADCOTE(TM) 76R36B MSDS‐US.PDF; COREACTANT 9L7 MSDS‐US.PDF; ADCOTETM

76R36B, rev 2012, CPDS.pdf; COREACTANT 9L7, rev 2012, CPDS.PDF

  

Subject: ADCOTETM 76R36B/COREACTANT 9L7 Adhesive System

Dear Ms. Alexander,

In response to your question of September 18 2012, copied and pasted here:

Thank you for sending the CPDS for Coreactant 9L7. My interest is not how much Hexamethylene 

Diisocyanate (H-D) is in Coreactant 9L7, but how much is emitted to the atmosphere. It is my 

understanding that the purpose of the H-D in the coreactant is to facilitate a reaction and that all of the 

H-D would not be expected to be emitted to the atmosphere. How much of the H-D will react or bond in 

the process and will not be emitted to the atmosphere? 

As stated in the MSDS and CPDS (attached), ADCOTETM 76R36B does not contain isocyanates, while 

COREACTANT 9L7 contains approximately 0.5% Hexamethylene Diisocyanate (HMDI), as supplied in 

the original unopened container. At the recommended mix ratio of 100 parts ADCOTE 76R36B to 4 

parts COREACTANT 9L7, the theoretical HMDI concentration in the wet adhesive blend is estimated to 

be approximately 0.0192% by weight, or 192 ppm.

The diisocyanate is consumed (reacts with the polyester polymer) during the drying and curing process. 

The finished laminate structure is not expected to contain any residual diisocyanate. Our customers are 

expected to use our Adhesive Systems in an industrial setting according to the guidelines stated in the 

Material Safety Data Sheet, including proper ventilation and environmental controls. 

Our information is based upon the theoretical compositions. We are disclosing this information, to the 

best of our knowledge, based upon data from our raw material suppliers and knowledge of our 

manufacturing processes. We believe our information to be accurate and reliable as of this date.

Best Regards,

Marianne

Marianne Riley

Product Specialist – Performance Plastics

Customer Information Group

Dow Business Services LLC, Market & Sales Solutions

2007 Austin, Midland, MI 48674 

E-mail: mjcikaloriley@dow.com

This information is considered accurate and reliable as of the date appearing above and is presented in good faith. Because use conditions and 

applicable laws may differ from one location to another and may change with time, recipient is responsible for determining whether the information in 

this document is appropriate for recipient's use. Since Dow has no control over how this information may ultimately be used, all liability is expressly 

disclaimed and Dow assumes no obligation or liability therefore. No warranty, expressed or implied, is given nor is freedom from any patent owned by 

The Dow Chemical Company or others to be inferred.

  

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