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Technical Data Sheet

 

Re-issued January 2008

 

 

EPI-REZ™ Resin 3540-WY-55

 

 

Product Description

EPI-REZ™ 3540-WY-55 Resin is a 55 percent solids dispersion of an EPON™ Resin 1007F in water and 2-propoxyethanol. This resin is designed for use in formulating industrial baking finishes, film adhesives/primers and fiber finishes/binders. When crosslinked with an appropriate resole, melamine or urea-formaldehyde resin and baked, epoxy coatings can be obtained that offer performance comparing favorably to solvent-borne epoxy coatings. This resin may also be used in industrial ambient cure primers in conjunction with waterborne EPIKURE™ amine curing agents that offer quick coalescing films with short lacquer dry times.

 

 

Application Areas/Suggested Uses

  • Clear bake coil coatings
  • Pigmented bake and ambient cure industrial coatings
  • Modified for other waterborne resins to improve hardness, mar resistance and flexibility
 

 

Benefits

  • May be formulated to low VOC coatings
  • Good adhesion to steel or aluminum
  • Compatible with a variety of aminoplast resins
  • Stable with a wide range of solvents
  • Nonionic stable dispersion of high molecular weight Bisphenol A resin

 

Sales Specification

Property

Units

Value

Test Method/Standard

Weight per Epoxide

g/eq

1,600-2,000

ASTM D-1652

Viscosity

cP

7,000-17,000

ASTM D-2196

Solids

%

53.5-55.5

ASTM D-1259

pH

 

7-10

ASTM E-70

Particle Size

microns

0.35 – 0.85

SRC00033

 

 

 

 

 

Typical Properties

Property

Units

Value

Test Method/Standard

Pounds/Gallon

 

 

 

     Solution

lbs/gal

9

 

     Solids

lbs/gal

10.1

 

Appearance

 

Opaque white liquid

 

 

 

 

 

 

 

Processing/How to use

 

General Information

EPI-REZ 3540-WY-55 may be formulated into gloss enamels, primers, and clear coatings. The viscosity and stability of these coatings are dependent on the solvents, pigments, and other additives used in formulating. It is therefore advisable to include one of the given formulations as a control when formulation changes are made in order to determine the effect of the change on formulation constants.

 

A variety of aminoplast resins have been screened with EPI-REZ 3540-WY-55. Evaluation of cured films using these crosslinking resins indicates that Beetle1 80 at an 80:20 ratio (epoxy resin solids/crosslinker solids) offers the best combination of hardness, flexibility, resistance properties and stability. There are a number of crosslinking agents and combinations of crosslinking agents that may be used with EPI-REZ 3540-WY-55 which offer the formulator latitude in developing coatings for specific end use requirements. Generally, 10 to 30 percent crosslinker resin solids will give optimum results.

 

In order to obtain adequate cure in baked films, it is necessary to use an acid catalyst. Preferably, a blocked catalyst should be used to ensure adequate stability. Based on extensive testing, phenol/butyl acid phosphate PA752 and FC-5203 have been found to give the best combination of cure response and stability. The recommended level of catalyst is 0.5 to 2.0 percent active catalyst on resin solids depending on baking temperature and duration of storage. Low levels of catalyst will exhibit a gradual loss of cure after one week of storage.

 

EPI-REZ 3540-WY-55 may also be used with EPI-REZ 3520-WY-55 or DPW 6520 to shorten the laquer dry time of these resins when cured with amines.

 

Table 1 / Typical performance - white enamel, 0.8 mil dry film thickness, Bonderite # 1000 (24 gauge)

 

 

 

 

160 in. • lbs.

Reverse Impact

MEK Resistance

Time

Temperature

Pencil Hardness

Double Rubs

Pencil Hardness

30 minutes

300 °F

5H

pass

100

5H

20 minutes

325 °F

5H

pass

100

5H

15 minutes

350 °F

5H

pass

100

5H

10 minutes

400 °F

5H

pass

100

5H

 

 

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.

 

For ease of handling and optimum shelf life, epoxy dispersions should be stored in tightly sealed containers at temperatures between 50 °F (10 °C) and 100 °F (37.8 °C). Do not allow the product to freeze. To prevent skinning or surface drying, do not leave the product uncovered for extended periods of time. If the need arises to store partially filled drums, replace the plastic top-sheet onto the surface of the liquid product.

 

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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