1May 25, 2010

Hardwood Plywood Adhesives for meeting CARB Exempt

Status

Earl PaytonSales Manager

2May 25, 2010

Introduction

Need for a Lower Fuming Adhesive Systems Adhesive Design Strategy ULEF Adhesives Designing an NAF polymer NAF Adhesive Conclusions

3May 25, 2010

Market Drivers for a CARB Exempt System

What are the drivers?

– The hardwood plywood markets have seen increasing regulation on

formaldehyde emissions since onset of CARB– There are advantages (reduced testing) associated with using

a ULEF or NAF system.– Market pull from end users as the general public becomes

more conscious of “green” products. – US National Standard on the horizon?

4May 25, 2010

Hexion Design Philosophy

Constraints: – System must be compatible with existing production and

environmental equipment in customer’s facility.

– Must be capable of passing HPVA HP-1 2004 “3 cycle soak” test.

The Hexion design philosophy is to find the most economical solution that satisfies all performance and regulatory requirements.

Hexion like other adhesive companies seeks to provide the market with solutions that are also a wise choice environmentally.

5May 25, 2010

Hexion’s Commercially Available ULEF Resins

ULEF 600-05 ULEF 600-04

6May 25, 2010

ULEF 600-05

Designed for CARB I compliance CARB Phase I, Phase II and exempt status Typical fuming levels = 0.03 - 0.06

7May 25, 2010

ULEF 600-04

Design for CARB Phase II Lower fuming than 05 Phase II, Exempt status Typical fuming levels = 0.01 - 0.04

8May 25, 2010

ULEF RESINS

Low emitting (CARB Phase II, exempt) 3-cycle durability performance Mix potlife advantages Similar press cycles as pre-CARB UF’s Similar gluing parameters as pre-CARB UF’s Similar mix resin solids and total solids Flexibility of fortification with melamine resin Mix pH modifiers to reduce HP heat requirements

9May 25, 2010

Thoughts on NAF Adhesive Design

Commercial systems for Hardwood plywood– Soy/ Polyamidoamine-epichlorohydrin (PAE) systems– Crosslinking polyvinyl acetate

Both systems above have positive attributes to offer; in building an adhesive system we need to follow the needs of the panel manufacturers and their downstream markets.

10May 25, 2010

Development of a NAF Polymer for Hardwood Plywood Adhesive

Each adhesive developer must play to strengths. As a result of multiple acquisitions Hexion has a broad technology

portfolio it can pull from to develop new adhesive systems. This NAF system is a result of a cross divisional effort to apply acrylic latex polymer technology to the wood composites industry.

The new adhesive is adapted from an acrylic latex originally developed for the coatings industry.

Produced using emulsion polymerization with a non volatile content of ~47%, a viscosity of less than 100 cps and neutral pH.

The latex is combined with a protein source, usually soy based, using a mill’s existing mixing and applications equipment to produce a glue mix between 17,000 and 25,000 cps depending on ratios.

.009 to .025 ppm

11May 25, 2010

Adhesive Mix for Hardwood Plywood

Adhesive Mix Water Latex emulsion Base (pH modifier) Soy component

Mix Characteristics 42% non volatile

content Viscosity 17,000-

25,000 cps 8.8-9.2 lbs/gal

12May 25, 2010

Glue Mix

13May 25, 2010

Layered Bonding Evaluation

14May 25, 2010

Hexion Adhesives

0.000

0.005

0.010

0.015

0.020

0.025

0.030

0.035

0.040

0.045

0.050

0.055

0.060

CARB Phase 1 ULEFSystems

CARB Phase 2 ULEFSystems

ULEF Exempt NAUF Actual Field Data NAF Wood

HCHO

Emi

ssion

s Ran

ges (

ppm)

15May 25, 2010

Ecobind emission levels:– in composite wood products below the most

stringent global standards– comparable to natural wood while meeting

performance requirements Ecobind resins:

– can be used with existing mill equipment– have excellent shelf life– provide physical properties comparable to

traditional binder solutions

Ecobind: Cost Effective Emissions Solutions

16May 25, 2010

Conclusions

The market will find the most economical solution that satisfies all performance and regulatory requirements.

Hexion offers ULEF adhesives designed to meet CARB Exempt An acrylic latex has been developed with thermal and

hydrophobic properties sufficient to pass HPVA HP-1 2004 “3-cycle soak” test for the hardwood plywood industry.

This NAF adhesive is cost competitive with other NAF systems and is low emitting.

We continue to optimize the formulations for the best cost/performance ratio.

The adhesive systems are compatible with existing hardwood plywood mixing and production equipment.