Mor-Free 205A/C-66 January 2008 Page 1 of 5

MOR-FREETM 205A/MOR-FREE COREACTANT C-66 

Solventless Laminating Adhesive

Description and Features

Mor-Free 205A + Mor-Free Coreactant C-66 is a solventless, two component, polyurethane adhesive

system. This adhesive system is used for film/film and film/aluminum foil and film/metallized film retort

applications. Suitable substrates include cast polypropylene, aluminum foil, nylon, and polyester films.

Typical Properties* 

 (Isocyanate) (Polyol)

 Mor-Free 205A Mor-Free Coreactant C-66

Solids 100% 100% 

Viscosity 77° F 2.250cps 11,000cps 

Weight/Gallon 9.13 lb 9.30 lb 

Appearance clear to yellow clear

Odor ----- Practically none --------

Mixing Ratio 100 pbw 80 pbw

 100 pbv 78 pbv 

Shelf Life** 360 Days 360 Days

(unopened containers)

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

considered part of a product specification. 

**Store in tightly closed container in cool, dry place. 

Mor-Free 205A + Mor-Free Coreactant C-66 may react or interact with other components of laminations. 

Retained volatiles (solvents or water), slip additives, antiblock agents and inks are some of the

components that may cause property changes of the laminated structure. If Mor-Free 205A +

Mor-Free Coreactant C-66 is used on high slip films (COF < 0.2) or with high slip LDPE/LDPE laminations, 

then the user must verify that potential film property changes due to the lamination process and materials,

are acceptable for the end use performance requirements.

Processing

Mor-Free 205A + Mor-Free Coreactant C-66 must be used on machines which have been specially 

designed for solventless laminations. Such equipment allows the adhesive to be fed through a 

meter/mix/dispense device and provides web tension controls designed for adhesives with low initial tack. 

Mor-Free 205A + Mor-Free Coreactant C-66 cures sufficiently for further processing in 5 - 7 days @ 

120°F. Allow 7 days cure at 120°F (50 °C) before retorting.

Preheating the adhesive and coreactant is not required under normal use to lower the viscosity. The 

application rolls should be heated to 135 -160°F (55 – 70 °C) or higher depending on line speed. 

When processing Mor-Free 205A + Mor-Free Coreactant C-66, the safety rules for working with

isocyanates must be observed.

-Free 205A/C-66 January 2008 Page 1 of 5 

PACKAGING AND

BUILDING MATERIALS 

Mor
For short trial runs the adhesive can be batch mixed. We recommend preparation of no more adhesive

than can be used within 5-10 minutes. However, the use of a meter/mix/dispense device which 

continuously mixes the adhesive at the chosen ratio, controls the feeding of the application unit, and

stops production automatically in case of machine failures, is indispensable for extended trials and normal

production. 

Cleaning 

The application unit should be cleaned before the adhesive becomes insoluble by progressive curing, if the

machine stops take more than 30 minutes. 

If the application unit and mixing devices are combustion proof, they may be cleaned with esters or ketones 

such as ethyl acetate and MEK. 

Several commercially available solvents are safe and effective for flushing and cleaning Mor-Free 

adhesive residues from solventless laminators and meter/mix/dispensing equipment that do not have 

combustion proof ratings. We recommend contacting either Dynaloy, Inc. (800-669-5709; 

www.dynaloy.com), or Danko Industries (630-882-6070) for cleaning solvent recommendations. Always 

consult the solvent supplier’s MSDS for safety information before use. 

Storage 

Mor-Free 205A and its coreactant can be stored for 6 months in airtight, closed, original containers in dry

rooms at temperatures of 70°F ±15° F. Opened containers should be used as quickly as possible. 

Safety, Handling and Storage 

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

closed. 

• 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. 

Mor-Free 205A/C-66 January 2008 Page 2 of 5
Pot Life of Mor-Free 205A / C-66

0

250

500

750

1000

1250

1500

1750

2000

2250

2500

0:00 2:00 4:00 6:00 8:00 10:00 12:00 14:00 16:00 18:00 20:00 22:00 24:00 26:00 28:00 30:00

Time (min:sec)

Visc

o

sity (

c

p

s)

Viscosity (cps) @ 60°C

______________________________________________________________________ Mor-Free 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

Rohm and Haas Company, Midwest Technical Center, 2531 Technology Drive, Suite 301, Elgin, IL 60124

Phone: 847-649-3800 Fax: 847-649-3760 

Mor-Free 205A/C-66 January 2008 Page 3 of 5
Rohm and Haas Food and Drug Opinion 

Product Name: MOR-FREE(TM) 205A ADHESIVE 

Regulation Number Complies Limitations Opinion Date 

21CFR175.105 Y Nov 11, 2002 

21CFR177.1390 A 1 Jan 29, 2001 

21CFR177.1395 Y Jan 29, 2001 

Legend: 

A Affirmed as compliant based on migration studies 

Y Yes, this product is cleared. 

Limitations: 

1 A = AFFIRMED AS COMPLIANT BASED UPON MIGRATION 

STUDIES. THE COMBINATION OF MOR-FREE 205A/MOR-FREE 

COREACTANT C-66 MAY BE USED AS AN ADHESIVE LAYER IN 

MULTILAMINATE FOOD PACKAGING MATERIALS WITH ALL 

FOOD TYPES AND WITH NO LIMITATIONS AS TO THE TYPE OF 

FOOD-CONTACT LAYER USED IN COMPLIANCE WITH THE 

FEDERAL FOOD, DRUG, AND COSMETIC ACT. 

Regulations: 

 21CFR175.105 ADHESIVES 

 21CFR177.1390 LAMINATE STRUCTURES FOR USE AT TEMPERATURES OF 

250F AND ABOVE 

 21CFR177.1395 LAMINATE STRUCTURES FOR USE AT TEMPERATURES 

BETWEEN 120F AND 250F

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. 

Mor-Free 205A/C-66 January 2008 Page 4 of 5
Rohm and Haas Food and Drug Opinion 

Product Name: MOR-FREE COREACTANT C-66 

Regulation Number Complies Limitations Opinion Date 

21CFR175.105 Y Jan 29, 2001 

21CFR177.1390 A 1 May 24, 2002 

21CFR177.1395 A 1 May 24, 2002 

Legend: 

A Affirmed as compliant based on migration studies 

Y Yes, this product is cleared. 

Limitations: 

1 A = AFFIRMED AS COMPLIANT BASED UPON MIGRATION 

STUDIES. THE COMBINATION OF MOR-FREE 205A/MOR-FREE 

COREACTANT C-66 MAY BE USED AS AN ADHESIVE LAYER IN 

MULTILAMINATE FOOD PACKAGING MATERIALS WITH ALL 

FOOD TYPES AND WITH NO LIMITATIONS AS TO THE TYPE OF 

FOOD-CONTACT LAYER USED IN COMPLIANCE WITH THE 

FEDERAL FOOD, DRUG, AND COSMETIC ACT. 

Regulations: 

 21CFR175.105 ADHESIVES 

 21CFR177.1390 LAMINATE STRUCTURES FOR USE AT TEMPERATURES OF 

250F AND ABOVE 

 21CFR177.1395 LAMINATE STRUCTURES FOR USE AT TEMPERATURES 

BETWEEN 120F AND 250F

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. 

Mor-Free 205A/C-66 January 2008 Page 5 of 5