Adcote 502A June 2007 Page 1 of 3 

ADCOTETM 502A

Laminating Adhesive

Description and Features

Adcote 502A adhesive is the polyester component of a two component laminating adhesive that requires

the use of an isocyanate coreactant. This polyester, in conjunction with various isocyanate terminated 

coreactants, functions as an adhesive for flexible packaging and industrial laminations. 

Adcote 502A adhesive adheres to a wide variety of substrates including cellophane, treated polyolefins,

polyester, polyamide, aluminum foil, metallized and PVDC coated materials, various woven and nonwoven substrates and the treated heat sealable layers of co-extrusions. 

Adcote 502A adhesive provides optical clarity, high bond strength, and a high level of heat and chemical 

resistance. 

Typical Properties* 

Solids 51% 

Viscosity 4000 cps @ 25°C 

Weight/gallon 8.2 lb (0.98 g/cc)

Solvents Ethyl Acetate

Coreactant Coreactant F** 

Mix Ratio 100 pbw Adcote 502A, 6.5 pbw Coreactant F

Diluents Urethane grade MEK, Toluene, Ethyl Acetate 

Shelf Life 360 days (unopened containers of Adcote 502A)

*These items are provided for general information only. They are approximate values and are not 

considered part of a product specification. 

**Other coreactants are available for special uses. Consult your Rohm and Haas sales representative for 

further information. 

Typical Uses

The principal uses for Adcote 502A adhesive with coreactant are in meat and cheese packaging, 

condiment packaging, liquid packaging, retort and film to foil laminations and a variety of industrial

laminations. 

Safety, Handling, and Storage

• Store in cool, dry, well ventilated area. 

• Follow good manufacturing and handling practices. 

• Wash thoroughly after handling. Wash contaminated goggles, face shield, and gloves. 

Professionally launder contaminated clothing before re-use. 

• ATTENTION! Container can be hazardous when empty. Follow label warnings even after

container is empty. Do not reuse empty container without professional cleaning. 

• Refer to Material Safety Data Sheet for more information. 

Adcote 502A June 2007 Page 1 of 3 

PACKAGING AND 

BUILDING MATERIALS 

ADHESIVES AND SEALANTS 
Alcohols and similar materials containing active hydrogen can react with Adcote 502A adhesive system 

causing inadequate cure. 

Adcote 502A can react or interact with other components of laminations. Retained solvents, slip additives, 

anitblock agents, and contaminated solvents are some of the components that may cause property 

changes of the film and/or adhesive. 

High molecular weight polyesters that are used in solution adhesives like Adcote 502A have tendency to 

form a reversible structure in solution with time. This structuring is accelerated when the adhesive is 

exposed to temperatures below 50°F (10°C). The structuring is reversible if heat and shear is 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 (43-60°C). 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. 

Recommended Operating Conditions

Application Method Direct Gravure 

Application Cylinder 95-130 lines/inch 

Application Solids 18-30% 

Dry Adhesive Weight 2.0-3.5 g/m2

Drying Web Temperature 65-82°C

Lamination Temperature 77-105°C 

Cure Time* 7-10 days at 20°C 

Slitting/Rewinding Time 24-48 hours at 20°C 

Cleaning solvent MEK 

*Recommended post curing 50-55°C for 3-5 days. 

Dilution Table for approx. 45 kgs of mix 

% Solids Adcote 502A Coreactant F Thinner 

 30 24.4 kgs 1.6 kgs 19.4 kgs 

 25 20.3 kgs 1.3 kgs 23.4 kgs 

 20 16.2 kgs 1.1 kgs 28.1 kgs 

______________________________________________________________________ ADCOTE is a registered trademark 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 beyond 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 the 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 license 

to use any patents of the Rohm and Haas Company. 

Visit us at http://www.rohmhaas.com/adhesivesSealants ; Midwest Technology Center, 2531 Technology Drive, Suite 301, Elgin, IL 60124 

Adcote 502A June 2007 Page 2 of 3 
 Rohm and Haas Food and Drug Opinion

Product Name: ADCOTE(TM) 502A ADHESIVE 

Regulation Number Complies Limitations Opinion Date

21CFR175.105 Y Jul 09, 2003

Legend:

Y Yes, this product is cleared. 

Regulations:

 21CFR175.105 ADHESIVES 

Disclaimer:

This information relates specifically to this product. We believe this information to be accurate

and reliable as of this date.

We recommend that our customers make their own determination on the suitability of this 

product for their particular application. 

We cannot guarantee that the indirect food additives/food-contact status of this product will 

remain unchanged indefinitely; therefore we recommend that you periodically verify its status. 

 ---------------------------------------------------------------------------------------------------------- 

Product Name: COREACTANT F 

PROMOTED FOR FOOD CONTACT USE IN E.R. 

Regulation 

Number Complies Limitations Opinion Date 

21CFR175.105 L 1 May 12, 2000 

EEC FC/P L 2, 3 May 04, 2004 

Legend: 

L Yes, this product is cleared with limitations as noted. 

Limitations: 

1 SOLVENT MUST BE COMPLETELY EVAPORATED DURING DRYING AND CURING. 

2 DIISOCYANATE: QM(T) = 1 MG/KG (EXPRESSED AS NCO) 

3 THE MATERIAL AND ARTICLE MANUFACTURED BY USING AROMATIC 

ISOCYANATES OR COLORANTS PREPARED BY DIAZO-COUPLING, SHALL NOT 

RELEASE PRIMARY AROMATIC AMINES (EXPRESSED AS ANILINE) IN A 

DETECTABLE QUANTITY (DL = 0,02 MG/KG OF FOOD OR FOOD SIMULANT, 

ANALYTICAL TOLERANCE INCLUDED) 

Regulations: 

 21CFR175.105 

 ADHESIVES (U.S.A.) 

 EEC FC/P EU DIRECTIVE 2002/72/EC (EUROPEAN REGION) 

Disclaimer: 

 This information relates specifically to this product. We believe this information to be accurate 

and reliable as of this date.

 We recommend that our customers make their own determination on the suitability of this 

product for their particular application.

 We cannot guarantee that the indirect food additives/food-contact status of this product will 

remain unchanged indefinitely; therefore we recommend that you periodically verify its status.

Adcote 502A June 2007 Page 3 of 3