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Technical Data Sheet


Issued: September 2010

 

 

EPIKOTE™ Resin 874L-X-90



Product Description
EPIKOTE Resin 874L is a Bisphenol-A based epoxy resin solution that has been modified to improve flexibility and to reduce solution viscosity. The standard product is supplied as a 90% wt solution in Xylene (EPIKOTE Resin 874L-X-90). This resin solution is ideally suited to formulate ambient temperature curing systems with significantly lower levels of Volatile Organic Compounds (VOC) when compared to conventional solvent-borne epoxy-polyamide systems.

In ambient cure applications, EPIKOTE 874L-X-90 out-performs standard liquid epoxy resin grades with respect to flexibility of the epoxy coating; as well as, standard solid epoxy resin grades with respect to solvent emissions from the coating formulation. This epoxy resin solution can be combined with the full range of curing agents typically used for liquid epoxy resins. It is recommended for use with high performance types as Mannich bases, cycloaliphatic polyamines and low viscosity polyamides.

Application Areas/Suggested Uses
EPIKOTE 874L-X-90 is designed for use in high solids, ambient cure epoxy coatings and is suitable for use in either epoxy primers or topcoats in these applications:

• Industrial maintenance (protective coatings)
• Marine coatings
• Industrial finishes

Benefits


• Complies with stringent VOC requirements (<100 g/L VOC)
• Offers the potential for cost savings
• Very good flexibility and corrosion resistance
• Easy application by roller, brush or spray

Cost Savings
Conventional solid resin based systems typically have VOC emission levels of ~450 g/l at application viscosity. The current VOC emission limit for marine and maintenance applications in many European countries and in the USA is 340 g/L and in some cases even down to 250 g/Ll. EPIKOTE 874-X-90 enables the formulation of high-solids paints with VOC emission levels down to less than 100 g/L. Since EPIKOTE 874-X-90 can meet both current and future VOC legislation; the customer can avoid future re-formulation costs. Lower VOC emissions correspond with solvent cost savings. Significant savings are also achieved by reduced labor costs. Paints with higher volume solids content require fewer spraying cycles to achieve the desired dry film thickness. Packaging, transportation and storage cost savings are achieved because of the very high solids content of the paint. Finally, the versatility of EPIKOTE 874-X-90 makes it a viable alternative to both solid and liquid resin grades in many different applications. This offers many opportunities for grade range rationalization and inventory cost reduction

Sales Specifications   

Property

Units

Value

Epoxy Number

%

15.9 – 18.7

Epoxy Equivalent Wt*

g/eg

230 - 270

Viscosity @ 25°C *

mPa.s **

2100 –2300

Solids

% m/m

89 - 91

Color, Gardner

 

3 max

 * Number of grams of resin containing 1 equivalent of epoxide (Weight per equivalent, WPE, is alternative term)
** 1mPa.s = centipoise

Typical Properties

Property

Units

Value

Density Solution 25°C

kg/l

1.07 – 1.17

Solvent

Xylene

 

Performance details
The table below shows the performance of EPIKOTE Resin 874L-X-90 compared to a standard solid solution resin grade in a red iron oxide anticorrosion primer.  

PROPERTY

Unit

EPIKOTE 874L-X-90*

EPIKOTE   874L-X-90*

EPIKOTE Resin 1001-X-75**

EPIKURE Curing agent

 

3155

195

3115-X-70

Pigment volume concentration

%

27

30

30

Solids (%wt) at application viscosity

%

80

83

60

Volatile Organic Compounds (VOC)

g/L

<250

<250

<450

Pot life

Hours

4

4

8

Application viscosity

Pa.s

0.2-0.3

0.2-0.3

0.2-0.3

Dry film thickness

mm

75

75

130

Number of coating layers

 

1

1

4

Corrosion resistance

 

 

 

 

Salt spray 1500 hrs

 

F2-M6

F8-F4

F2-M6

Chemical resistance

 

 

 

 

10% Sodium hydroxide

 

10

F6 at bottom

10

10% Sulphuric acid

 

170 hrs.    VD8 at bottom

170 hrs. FM4

96 hrs. Delamination

10% Acetic acid

 

24 hrs.     MD8

170 hrs.   M4

29 hrs. Delamination

Solvent resistance

 

 

 

 

Xylene (1500 hrs.)

 

10

10

10

MIBK (1200 hrs.)

 

10         Glossy

10      Glossy

10      Loss of gloss

 ? Paint formulation similar to EPIKOTE Technical Bulletin EK 2.2.4.6
?? Paint formulation similar to EPIKOTE Technical Bulletin EK 2.2.4.1


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

® 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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