Adcote 7742 A pril 2011 P age 2 of 3

Suggested Coreactants: 100 parts Adcote 7 742 : 6.4 parts Coreactant F 100 parts Adcote 7 742 : 4.8 parts Coreactant 9L10 100 parts Adcote 7 742 : 4.8 parts Coreactant CT

Precautions See Material Safety Data Sheets for hazardous ingredients, flammability, disposal, and related handling

information. Adcote 7 742 resin can react or interact with other components of the structure. Retained solvents, slip additives, antiblock agents, and contaminated solvents are some of the components that may
cause property changes of the substrates and/or Adcote 7 742 resin.

General Information The initial color and clarity of Adcote 7 742 resin will remain unchanged after outdoor exposure. In addition,

Adcote 7 742 resin is resistant to attack by dilute acid and alkali solut ions. When mixed with coreactant, the tensile strength and resistance to chemical plasticizers, solvents and water are noticeably improved. The melting temperature range will also increase. With some substrates, the addition of a coreactant may improve adhesion.

High molecular weight polyester adhesives like Adcote 7 742 have a tendency to form a reversible structure in solution with time. This structuring is accelerated when the adhesive is exposed to temperatures below 50°F. The structuring is revers ible if heat and shear are applied to the adhesive. We recommend placing the container of adhesive in a steam cabinet, allowing venting of the container and heating to 110

– 140°F. After the adhesive reaches the proper temperature, mix the adhesive in the

container for 1

– 3 hours under moderate shear. Use of a disperser or “Cowles” type blade will shorten the

time needed.

Caution must be taken because of the flammability of the solvents used in the adhesive. Please

review MSDS for hazards associated with the adhesive.

Attempting to redisperse without heat may reduce the apparent viscosity, but not result in a homogeneous mix. Before using the adhesive, check, to make sure that all resin has returned to a true solution and no gels remain.

Directions For Use Apply Adcote 7 742 resin by any of the conventional methods, including gravure coater, reverse roll coater, knife and spraying. Dilution may be necessary. Apply enough wet coating to deposit 0.1

- 0.3 dry mil s (or approximately 2

– 6 dry lb per 3000 squ are feet) and completely remove the solvents. Laminate with heated nip rolls to provide a minimum glue line temperature of 140°F.

The preferred method for bonding is to coat the more stable substrate, heat the glue to a temperature above
140°F, and lamin ate. A heated press can be used for general purpose bonding by employing enough pressure to insure intimate contact between the adhesive and both surfaces, and holding this pressure until the glue line reaches 140°F.

When using Coreactant, use the amount shown in the Suggested Coreactants section as a guide. The optimum level of coreactant should be determined experimentally for each particular end use. Coating with coreactant is handled in the same manner as without. Curing begins after solvent remova l and continues slowly at room temperature. Approximately 7

– 14 days are necessary to complete the cure at room temperature, but a post cure at elevated temperatures can reduce this time.Adcote 7742 A pril 2011 P age 3 of 3

Pot Life

It is best not to mix more Adcote 7 742 resin and coreactan t than will be used in 8 hours. Any mixed solution that is left over should be stored in tightly closed containers and should be used within 3 days. When reusing, we recommend that you combine the old mixed solution with newly mixed solution in the ratio of 25% old and 75% new, and mixed thoroughly.

Safety Precautions

Adcote 7 742 resin contains somewhat toxic and/or flammable solvents and suitable handling precautions should be observed. Do not inhale the fumes. Avoid prolonged and repeated contact wit h the skin. Eye contact must be prevented. Synthetic gloves, face shields, and aprons impermeable to these solvents should be worn when there is possible skin contact. Use NIOSH approved respirators to avoid fumes.

Adcote an d Mor

- Ester are registered trademarks of Rohm and Haas Company.

These suggestions and data are based on information we believe to be reliable. They are offered in good faith, but without guarantee, as conditions and method of use of our products are beyo nd our control. We recommend that the prospective user determine the suitability of our materials and suggestions before adopting them on a commercial scale.

Suggestions for uses of our products or the inclusion of descriptive material from patents and t he citation of specific patents in this publication should not be understood as recommending the use of our products in violation of any patent or as permission or l icense to use any patents of the Rohm and Haas Company.

Visit us at http://www.rohmhaas.com/AdhesivesSealants

T he Dow Chemical Co , Midwest Technical Center, 1 500 E Lake Cook Rd, Buffalo Grove, IL 60089

Phone: 847

- 2 15

- 8600 Fax: 847

- 8 08

- 3858