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Preferred Materials and Processes

High Solids Paint Tips
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Subject: High Solids Paint Tips

This page is designed to provide comparison information between conventional and high Solids paints and highlight common manufacturing issues.

BAC 5705 Application of Floor covering Materials, Revision F, 18-MAY-1998
BAC 5710 Application of Special Purpose Coatings, Revision M, 29-APR-1992
BAC 5736 Application of Chemical and Solvent Resistant Finishes, Revision T, 22-MAY-03
BAC 5793 Application of Corrosion Resistant Finish For Integral Fuel Tanks, Revision U, 28-JUN-1996
BAC 5837 Preparing Exterior Plastic Surfaces for Paint, Revision R, 11-JUL-1997
BAC 5845 Application of Polyurethane Enamel, Revision G, 01-MAR-04
BBAC 5882 Application of Urethane Compatible Primer, Revision H, 13-JUL-2000
BMS 10-11 Chemical and Solvent Resistant Finish, Revision Y, 09-MAY-03
BMS 10-20 Corrosion Resistant Finish for Integral Fuel Tanks, Revision M, 13-AUG-02
BMS 10-60 Protective Enamel, Revision P, 23-JAN-04
BMS 10-72 Exterior Decorative Paint System, Revision V, 03-NOV-03
BMS 10-86 Teflon Filled Coating, Revision J, 15-JUN-01
D6-1816 Process Document for Decorative Finishing of Airplane Exteriors, Revision AU

This does not supersede drawings, specification requirements, or the qualified products list. This information shall not be used for production, test, or acceptance processes.

Manufacturing Information: Polyurethane and Epoxy High Solids Coatings


Application: High Solids topcoats are more viscous, thus they tend to sag more than conventional topcoats. Painters learning to use high Solids material often overcompensate by applying less paint. Confirm dry film thickness meets minimum requirement. Suggest experimenting with smaller tip sizes.

Cure: High Solids paints generally have longer flash off prior to heat cure, longer dry times, shorter pot life, and shorter shelf life.

Contamination Sensitivity: High Solids paints are sensitive to contamination. Most problems can be avoided by careful pre-paint cleaning and by filtering the mixed paint prior to spray.

Mixing: Exact mix ratio required.
Base, catalyst, and thinner (or flow control) components each have additives that must be in correct proportion for proper film properties.
Do not mix Base and Thinner before adding Catalyst. Doing so may cause pigment float.

Semi-gloss and Flats: Semi-gloss and flat colors may have different mix ratios, pot life, and dry times than gloss colors.

Can Labeling: Some products are qualified to multiple specifications. Acceptable paint lists the specification called out by your drawing and may list others.

BMS 10-11 Type II: Low VOC Semi Gloss and Flats: Both catalyst and base need to be agitated before mixing. Long flash off time prior to heat cure required to achieve low gloss level.

BMS 10-60 and BMS 10-72 topcoats: Accelerated cure thinners are available for several high Solids products on the QPL.

BMS 10-86: See your drawing and the usage requirements in BAC 5710 for choosing the correct BMS 10-86 type for touch up, decorative and non decorative use.

BMS 10-79 Primer: Technically, the new BMS 10-79 primer is not a true high Solids paint. Rather, it is a low-VOC primer, by virtue of the acetone (VOC-exempt) content. As such, the paint characteristics resemble those of a typical, lower-Solids paint system. However, care must still be taken to ensure a clean surface prior to painting.

The information provided in this website is intended to assist suppliers to The Boeing Company. Although every effort has been made to ensure its accuracy, we cannot warrant its accuracy for use in environmental compliance matters. You should check with your local, state, or Federal regulatory agencies if you have questions regarding the proper procedures or other matter related to compliance.

Safety Reminder:
Refer to Manufacturer's material safety data sheets, or contact the manufacturer for safety and health information pertaining to hazardous materials.

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