ADCOTETM 3840D 

Description

Adcote 3840D is a solution coating based on Mor-Ester® 49038 polyester resin. It provides excellent 

adhesion to most plastic and metal surfaces, and can be used as a primer, heat seal coating, binding resin or 

ink vehicle base. This product's performance can be further enhanced by using recommended coreactants.

Typical Properties (Not a Specification)**

Weight Solids 40%

Viscosity, cps 5300

Density 9.6

Solvents 1,3-dioxolane

Recommended Diluents MEK, Toluene

Coreactant Coreactant F*

Mix Ratio 100 pbw Adcote 3840D

3.2 pbw Coreactant F

Shelf Life 6 Months in unopened containers

 *Other corectants are available for special uses. Consult your Rohm and Haas account manager for further 

information.

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

considered part of a product specification.

Precautions

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

information. Alcohols and similar materials containing active hydrogen can react with Adcote 3840D resin, 

causing inadequate cure. Adcote 3840D resin can react or interact with other components of the structure. 

Retained solvents, slip additives, anti-block agents and contaminated solvents are some of the components 

that may cause property changes in substrates and/or Adcote 3840D resin.

General Information

The initial color and clarity of Adcote 3840D resin will remain unchanged after outdoor exposure. In addition, 

Adcote 3840D resin is resistant to dilute acid and alkali solutions. When Adcote 3840D is mixed with 

coreactant, its tensile strength and resistance to chemical plasticizers, solvents and water are noticeably 

improved, and its melting range increases. Also, with some substrates, the addition of a coreactant may 

improve adhesion.

Directions For Use

Apply Adcote 3840D resin using 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 mils 

(or approximately 2-6 dry lbs/3000 sq. ft.) and completely remove the solvents.

The preferred method for bonding is to 1.) coat the more stable substrate, 2) heat so the glue line is 270F 

minimum, and 3.) bond. A heated press can be used for general purpose bonding by employing enough 

pressure to ensure intimate contact between the adhesive and both surfaces, and holding this pressure until 

the glue line reaches 270F.

 Feb-03 1 

PACKAGING AND

CONVERTING

ADHESIVES AND SEALANTS
When using Coreactant F, use the amount shown in the Typical Properties 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 coating without coreactant. Curing begins after solvent 

removal and continues slowly at room temperature. Approximately 7-14 days are needed to complete the 

cure at room temperature, but a post cure at elevated temperatures can reduce this time.

Pot Life

Do not mix more Adcote 3840D resin and coreactant that will be needed in 8 hours. Any mixed solution that 

is left over should be stored in tightly closed containers and used within 3 days. When reusing, we 

recommend combining the old mixed solution with the newly mixed solution at a ratio of 25% old/75% new. 

Mix thoroughly.

Safety Precautions

 Store in cool, dry, well ventilated area.

 Follow good manufacturing and handling practices.

 Wash thoroughly after handling. Wash contaminated goggles, faceshield, 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 professionally cleaning it first.

 Refer to Material Safety Data Sheet for more information.

______________________________________________________________________ 

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 

Address: Midwest Technical Center, 2531 Technology Drive, Suite 301, Elgin, IL 60123

Phone: 847-649-3800

Adcote 3840D Nov-12 2