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Technical Data Sheet

 

Re-issued August 2007

 

 

EPIKURE™ Curing Agent 3381

 

 

Product Description

EPIKURE™ Curing Agent 3381 is a very low viscosity, modified cycloaliphiatic amine, light colored epoxy curing agent. Systems formulated with EPIKURE Curing Agent 3381 exhibit good chemical resistance and color stability. It is ideally suited for civil engineering sealers and architectural coatings.

 

Application Areas/Suggested Uses

  • Civil engineering sealers
  • Decoupage coatings
  • Grouts
  • Mortars
  • Architectural pastel, high-build coatings

 

Benefits

  • Low mixed viscosity
  • Good flexibility
  • Excellent gloss and color stability
  • Good chemical resistance
  • Positive cure under damp cool conditions

 

Sales Specification

Property

Units

Value

Test Method/Standard

Amine value

mg/g

290-360

ASTM D2896

Viscosity at 25°C

cP

50-100

ASTM D2196

Color

Gardner

1

ASTM D1544

 

 

 

 

 

Typical Properties

Property

Units

Value

Test Method/Standard

Equivalent weight, approx.

 

95

 

Density @ 25 °C

lbs/gal

8.3

ASTM D1475

Flash point

°C

>100

ASTM D3278

Appearance

 

Clear and free of foreign particles

Mix ratio

 

 

 

EEW 190 epoxy

phr

50-65

 

 

 

 

 

 

 

Performance Properties

 

Table 1 / Properties of Systems Cured with EPIKURE Curing Agent 3381

 

Components

Method

Units

Value

EPIKURE Curing Agent 3381

 

pbw

50

Epoxy Resin, Bis A type

 

pbw

87

HELOXY™ Modifier 8

 

pbw

13

 

 

 

 

Handling Properties @ 25°C

 

 

 

Viscosity, Mixed

 

cP

220

Peak Exotherm

 

°C

149

Pot life, 250 g, 25 °C

 

min

44

 

 

 

 

Cured State Properties

 

 

 

Heat Deflection Temperature

ASTM D648

°C

51

Tensile Strength

ASTM D638

psi

7,600

Tensile Elongation

 

%

17

 

Table 2 / Starting Point Formulation : Clear Unpigmented Varnish

 

Components

Units

Value

Epoxy Resin, Bis A type

pbw

85

HELOXY Modifier 8

pbw

15

EPIKURE Curing Agent 3381

pbw

50

 

 

 

Physical Properties

 

 

% Solids

 

100

Pot life at 25 °C

min

46

Dry times

 

 

Dust-free

hrs

3.5

Tack-free

hrs

5

Through-cure

hrs

18

 

 

 

Film Properties

 

 

25 °C, 50% R.H.

 

 

1 day

 

Clear, tack-free

10 °C, 90% R.H.

 

 

1 day

 

Slight tack, clear

7 days

 

Tack-free, slight blush

4.4 °C, 80% R.H.

 

 

1 day

 

Slight tack, slight blush

7 days

 

Slight tack, slight blush

 

 

 

Chemical Resistance

 

 

Resistant

24 hour immersion, less than 50% loss in hardness, no blistering, no whitening.

 

25% ammonium hydroxide

5% HNO3

 

beer

10% HCI

 

xylene

distilled water

 

20% HCI

mineral spirits

 

 

 

Limited Resistance

24 hour immersion, greater than 50% loss in hardness, no blistering, slight whitening.

 

10% HNO3

50% NaOH

 

10% H2SO4

wine

 

10% acetic

10% lactic

 

 

 

Not Resistant

24 hour immersion, greater than 50% loss in hardness, blistering, whitening, adhesion loss.

 

Ethanol

5% H3PO4

 

fuming H2SO4

methylene chloride

 

methyl ethyl ketone

50% acetic

 

 

50% lactic

 

 

Safety, Storage & Handling

Please refer to the MSDS for the most current Safety and Handling information.

 

Please refer to the Hexion web site for Shelf Life and recommended Storage information.

 

Exposure to these materials should be minimized and avoided, if feasible, through the observance of proper precautions, use of appropriate engineering controls and proper personal protective clothing and equipment, and adherence to proper handling procedures. None of these materials should be used, stored, or transported until the handling precautions and recommendations as stated in the Material Safety Data Sheet (MSDS) for these and all other products being used are understood by all persons who will work with them. Questions and requests for information on Hexion Inc. ("Hexion") products should be directed to your Hexion sales representative, or the nearest Hexion sales office. Information and MSDSs on non-Hexion products should be obtained from the respective manufacturer.

 

Packaging

Available in bulk and drum quantities.

 

 

Contact Information

For product prices, availability, or order placement, please contact customer service:

www.hexion.com/Contacts/ 

 

For literature and technical assistance, visit our website at: www.hexion.com

 

® and ™ Licensed trademarks of Hexion Inc.

DISCLAIMER

The information provided herein was believed by Hexion Inc. (“Hexion”) to be accurate at the time of preparation or prepared from sources believed to be reliable, but it is the responsibility of the user to investigate and understand other pertinent sources of information, to comply with all laws and procedures applicable to the safe handling and use of the product and to determine the suitability of the product for its intended use. All products supplied by Hexion are subject to Hexion’s terms and conditions of sale. HEXION MAKES NO WARRANTY, EXPRESS OR IMPLIED, CONCERNING THE PRODUCT OR THE MERCHANTABILITY OR FITNESS THEREOF FOR ANY PURPOSE OR CONCERNING THE ACCURACY OF ANY INFORMATION PROVIDED BY HEXION, except that the product shall conform to Hexion’s specifications. Nothing contained herein constitutes an offer for the sale of any product.

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