Correlation Between Solids Content and Hiding as it Relates to

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Calculation of VOC Content in Architectural Coatings

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California Air Resources Board

2004

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TABLE OF CONTENTS

DISCLAIMER i

ACKNOWLEDGEMENT . ii

ABSTRACT iii

TABLE OF CONTENTS. iv

LIST OF FIGURESv

LIST OF TABLES vi

I. INTRODUCTION1

A. Statement of Problem .1

B. Background 1

C. Project Objectives3

II. PROJECT METHODOLOGIES.7

A. Hiding vs. Coverage.7

B. Color Determinations .17

C. Gloss Measurements18

III. RESULTS 23

A. Water-Borne Coatings.23

B. Solvent-Borne Coatings 30

IV. DISCUSSION OF RESULTS.32

A. Color .32

B. Gloss 32

C. Water-Based Coatings.32

D. Solvent-Based Coatings 33

D. Comparison of Coatings by Class33

E. Hiding VOC33

V. CONCLUSIONS .45

APPENDIX A - FORMULATIONS 48

APPENDIX B - HIDING POWER GRAPHS FOR WATER-BASED COATINGS.79

APPENDIX C - HIDING POWER GRAPHS FOR SOLVENT-BASED COATINGS.100