Adhesion Promoters & Thinners


Adhesion Promoters & Thinners for Photodefineable and Non-Photodefineable Products

Adhesion promoters are required for all non-photodefinable products (except for PI2574).

Photodefinable products have built-in adhesion promoters but adhesion can be enhanced with the use of these adhesion promoters.

Experimental results indicate that only a monomolecular layer is needed to promote adhesion. These results indicate that a Si-O bond is formed with the substrate. Adhesion results are sensitive to the number of bonding sites on the substrate surface. For example, adhesion to silicon dioxide is typically superior to adhesion on silicon nitride. These promoters are not effective with substrates that do not form any native oxide.


Adhesion Promoters

This material is a concentrate and must be diluted to 0.1% in DI water before use. The concentrate has up to a two year shelf life if stored tightly sealed but the water dilution is good for only 24 hours.

This material is a 0.1% solution of VM651 in an organic solvent. It is ready to use out of the bottle but has a six month shelf life from date of manufacture.



Filtered and certified solvent blend. This should be used to thin other products to very thin film thickness. Do not use for HD8XXX products.

View Adhesion Promoters & Thinners

HD MicroSystems™ adhesion promoters improve the adhesion of polyimide coatings to substrates such as silicon dioxide or silicon nitride coated wafers. The thinner is used to reduce viscosity and solids content to obtain desired film thicknesses.

View Developers & Rinses

HD MicroSystems™ produces solvent based, developers and rinses for its line of negative tone photosensitive polyimides