Adcote L 76-186/CR-384 December 2011 Page 1 of 4

ADCOTETM L 76-186/CR-384

Laminating Adhesive

Description

Adcote L 76-186 is the isocyanate terminated polyester urethane component of a two component adhesive 

system which requires the use of coreactant CR-384 to achieve full properties.

Adcote L 76-186 adhesive provides high bond strength and a high level of heat and chemical resistance.

The cure rate of laminations made with Adcote 76-186 adhesive is dependent on the temperature and 

relative humidity of the storage or holding area. 

Typical Properties*

Adcote L 76-186 CR-384

Solids 75% 70%**

Viscosity 3900 cps <50 cps

Weight/Gallon 9.7 lb 9.0 lb

Solvent Ethyl acetate Ethyl alcohol

Diluents Urethane grade ethyl acetate 

Mix Ratio 100 pbw 2.5 pbw

Shelf Life 360 days 270 days

(unopened containers)

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

considered part of a product specification.

**CR-384 is 100% reactive. May contain small amounts of proprietary organic solvents. See MSDS for 

details.

Typical Uses

Adcote L 76-186/CR-384 can be used in retortable structures to laminate polyester to foil or nylon to foil. The 

adhesive layer must be separated from the food product by a functional barrier. Consult your 

Rohm and Haas Company sales representative for suggestions regarding the inner ply, i.e. the foil/cast 

polypropylene component. 

Adcote L 76-186/CR-384 can be used for laminations where high chemical resistance from foods and 

chemicals is required. Adcote L 76-186/CR-384 can also be used as an in-line primer for extrusion 

laminating and coating, where enhanced adhesion and heat resistance is needed. Consult your Rohm and 

Haas Company sales representative for suggestions. 

Mixing Instructions

Add the proper amount of CR-384 coreactant to the diluent solvent, then add this mixture to the Adcote L 76-

186 adhesive. Adding CR-384 directly to either 75% solids Adcote L 76-186 or diluted mixes without 

pre-dilution of the CR-384 may result in a cloudy mixture. 

Adcote L76-186/CR-384 December 2011 Page 1 of 4

PACKAGING AND

CONVERTING
Adcote L 76-186/CR-384 December 2011 Page 2 of 4

Safety, Handling and Storage

 Store in cool, dry, well ventilated area away from heat and ignition sources. Keep container tightly 

closed.

 Hot organic chemical vapors can suddenly and without warning combust when mixed with air. 

Ignition can occur at typical elevated temperature process conditions. Please evaluate such 

processes to assure safe handling conditions.

 Support and ground containers before opening, dispensing, mixing, pouring or emptying. Open with 

non-sparking tools. If container is warm, open bung slowly to release the internal pressure.

 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 use heat, sparks, open flames, torches or cigarettes on or near empty containers. 

Do not reuse empty container without professional cleaning.

 Refer to Material Safety Data Sheet for more information.

Alcohol (except for the minor amount contained in the 2% addition of Coreactant CR-384 to the adhesive) 

and similar materials containing active hydrogen can react with Adcote L 76-186 adhesive causing 

inadequate cure.

Adcote L 76-186 can react or interact with other components of laminations. Retained solvents, slip 

additives, antiblock agents, and contaminated solvents are some of the components that may cause 

property changes of the film and/or adhesive.

Recommended Operating Conditions

Application Method Direct gravure

Application Cylinder 110 - 150 line

Application Solids 35-40%

Dry Adhesive Weight 1.5-3.0 lb/ream

Drying Web Temperature 150 - 180F

Laminating Temperature 150 - 220F

Cure Time 5 days at 70F

Slitting/Rewinding Time 24 hours at 70F

Cleaning Solvent Methyl ethyl ketone or ethyl acetate
Adcote L 76-186/CR-384 December 2011 Page 3 of 4

10

12

14

16

18

20

22

24

26

28

30

20 25 30 35 40 45 50

Visc in Sec @ 25°C

Solids vs. Viscosity Curve Zahn #2

Adcote L 76-186/CR-384 (100/2.5 pbw) Diluent Ethyl Acetate

% Solids

0

20

40

60

80

100

120

20 25 30 35 40 45 50

Visc cps @ 25°C

Solids vs Viscosity Curve Brookfield

Adcote L 76-186/CR-384 (100/2.5 pbw) Diluent Ethyl Acetate

% Solids
Adcote L 76-186/CR-384 December 2011 Page 4 of 4

Rohm and Haas Food and Drug Opinion

Name: ADCOTE L 76-186 

Regulation Complies Opinion 

Date Limitations

21CFR175.105 L 09/09/2011 ▪ SOLVENT MUST BE COMPLETELY EVAPORATED DURING 

DRYING AND CURING.

21CFR177.1395 A 09/09/2011 ▪ Adcote L76-186 and Adcote 577B, used at a ratio of 100:7, at 1.76 

lb/ream, and cured for 3 days at room temperature, may be used as 

an adhesive layer in multilaminate food packaging materials with 

aqueous food types with a food contact layer of at least 2 mil of 

LLDPE at conditions of use C through G in full compliance with the 

United States Federal Food, Drug, and Cosmetic Act.

Legend:

L Yes, this product is cleared with limitations noted

N No, this product is not cleared

Y Yes, this product is cleared.

A Affirmed as compliant based on migration studies.

Regulations:

21CFR175.105 Adhesives

21CFR177.1395 Laminate structures for use at temperatures between 120F and 250F

Name: CR-384 

Regulation Complies Opinion 

Date Limitations

21CFR175.105 Y 08/07/2009

Legend:

L Yes, this product is cleared with limitations noted

N No, this product is not cleared

Y Yes, this product is cleared.

A Affirmed as compliant based on migration studies.

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.

_____________________________________________________

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.