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Urethane Adhesives

Product Description

• 3M™ Scotch-Weld™ Urethane Adhesives 3532 B/A, 3535 B/A and 3549 B/A are

two-component, polyurethane adhesives which cure at room temperature or with

heat to form tough, impact-resistant structural bonds. Their adhesion properties are

identical and they vary only in work life, cure time and color. They provide

excellent adhesion to many primed or painted metal and plastic substrates and are

designed to develop sag resistance approximately 30 seconds after mixing.

• 3M™ Scotch-Weld™ Structural Adhesive Primer EC-3901 is suggested for use on

metal surfaces to achieve maximum resistance to water, humidity and salt spray.

(See Primer Information in Directions for Use section on page 2.)

Technical Data

January, 2010

Typical Physical

Properties

Note: The following technical information and data should be considered representative

or typical only and should not be used for specification purposes.

3M™ Scotch-Weld™

Urethane Adhesive 3532 B/A

Base

Accelerator

Color (Cured: Brown)

Off-White

Brown

Base

Polyol

Isocyanate

Net Weight (lbs./gal.)

10.3

11.2

Viscosity

Brookfield RVF #6 sp.

Brookfield RVF #5 sp.

cps @ 75°F (24°C)

@ 20 rpm: 10,000-55,000 cps

@ 10 rpm: 15,000-40,000 cps

Mix Ratio: By Weight

100

109

By Volume

100

100

Work Life: 100 grams mixed at 75°F (24°C): 5-15 min.

Time to Reach Full Cure @ 75°F (24°C) 24 hours

3M™ Scotch-Weld™

Urethane Adhesive 3535 B/A

Base

Accelerator

Color (Cured: Off-White)

White

Brown

Base

Polyol

Isocyanate

Net Weight (lbs./gal.)

10.9

11.3

Viscosity

Brookfield RVF #6 sp.

Brookfield RVF #5 sp.

cps @ 75°F (24°C)

@ 10 rpm: 5,000-40,000 cps

@ 10 rpm: 15,000-40,000 cps

Mix Ratio: By Weight

100

105

By Volume

100

100

Work Life: 100 grams mixed at 75°F (24°C): 45 sec.-240 sec.

Time to Reach Full Cure @ 75°F (24°C) 8 hours