This specification covers the requirements for a low bake 120 °C (250 °F) solventborne or waterborne standalone adhesion promoter for Thermoplastic Olefin (TPO). The adhesion promoter may be conductive or non-conductive, depending on the needs of the user.

Note: Nothing in this standard supercedes applicable laws and regulations.

Note: In the event of conflict between the English and domestic language, the English language shall take precedence.

Purpose/Material Description.

This adhesion promoter is part of a total painted product system and must provide a smooth, adhesion-promoting coating direct to substrate, specifically TPO. This specification shall be used in conjunction with the Approved Paint on Plastics Systems (APOPS), a section of the GM Materials Approved Source List (GMMASL), which lists approved substrate, cleaning, priming, and topcoat combinations (see GMW14270). APOPS test requirements are defined in GMW14797.

Symbols.

Not applicable.

Applicability.

Adhesion promoters covered under this specification are designed to be used on TPO and only on service part applications.

Remarks.

None.