Mor-Free L 75-173/C-132-2 February 2012 Page 1 of 3

MOR-FREETM L 75-173/C-132-2

Fast Cure Solventless Laminating Adhesive

Description and Features

Mor-Free L 75-173/C-132-2 is a solvent-free, 100% solids, two component polyurethane adhesive system 

that can be applied at warm temperature. As the reactivity of Mor-Free L 75-173/C-132-2 is high, the 

laminates can generally be further processed in as few as 6 hours. The chemical curing is generally 

completed within 5 days at room temperature of 72°F. As always, converters should verify appropriate 

cure times for their individual application.

Mor-Free L 75-173/C-132-2 can be used for laminating polyolefin films, including LDPE to LDPE, OPP to 

OPP, and OPP to LDPE, as well as nylon, aluminum, polyester, and other packaging substrates. The films 

may be unprinted or reverse printed with the appropriate laminating grade inks.

Mor-Free L 75-173/C-132-2 offers rapid bond development to reduce the time needed for post-processing 

while offering good metal adhesion. Mor-Free L 75-173/C-132-2 can be used for a wide range of 

applications at room temperature and below.

Typical Properties*

(Isocyanate) (Polyol)

Mor-Free L 75-173 C-132-2

Solids 100% 100%

Viscosity77F 2400 cPs 5000 cPs

Weight/Gallon 9.5 lb 8.7 lb

Appearance Clear, yellow Clear

Odor Practically none Practically none

Mixing Ratio 100 pbw 86 pbw

100 pbv 100 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 L 75-173/C-132-2 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. 

Processing

Mor-Free L 75-173/C-132-2 must be used on machines that 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.

As the reactivity of Mor-Free L 75-173/C-132-2 is high, the laminates can generally be further processed in 

as few as 6 hours, depending on the laminate construction. The chemical curing is generally completed 

within 5 days at 25°C, depending on the laminate construction. As always, converters should verify 

appropriate cure times for their individual application.

 Mor-Free L 75-173/C-132-2 February 2012 Page 1 of 3 

PACKAGING AND

CONVERTING
Mor-Free L 75-173/C-132-2 February 2012 Page 2 of 3

Application Temperature

We recommend the application roll be set at 94°F (35°C), depending on machine design and line speed 

desired. No preheating of the adhesive or coreactant at the meter/mix/dispense unit is required.

A relatively slow initial increase in viscosity is due to the exothermic reaction of the adhesive immediately 

after the mixing process and the mechanical influences in the application system.

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. A high speed stirrer suitable for a homogeneous mixing should be used. 

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.

When processing Mor-Free L 75-173, the safety rules for working with isocyanates must be observed. The 

adhesive contains monomeric MDI. See Material Safety Data Sheet for specific details.

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 L 75-173/C-132-2 can be stored in airtight, closed, unmixed, original containers in dry rooms at 

temperatures of 70° ± 15F. Opened containers should be used as quickly as possible. Both Mor-Free L 

75-173 and C-145 should be protected from freezing.

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, 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 professional cleaning.

 Refer to Material Safety Data Sheet for more information.

 

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.
Mor-Free L 75-173/C-132-2 February 2012 Page 3 of 3

Rohm and Haas Food and Drug Opinion

Name: Mor-Free L 75-173 

Regulation Complies Opinion 

Date Limitations

21CFR175.105 Y 01/20/2010

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

Name: MOR-FREE C 132-2 

Regulation Complies Opinion 

Date Limitations

21CFR175.105 Y 04/04/2008

21CFR177.1395 A 04/04/2008 ▪ The combination of Mor-Free L75-164 and Mor-Free C-132-2, 

when used at a ratio of 100:63, at 1.21 pounds per ream, and cured 

for 5 days at room temperature, may be used as an adhesive layer 

in multilaminate food packaging materials with all food types 

provided that the adhesive layer is separated from food by a 1 mil 

linear low density polyethylene film (or equivalent or better barrier 

properties) in compliance with the 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

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.