BYK Additives & Instruments

Adhesion Promoters

Adhesion promoters for coating applications are added to the liquid coating. After the application, they orientate on the substrate/coating interface and develop bonds both on the substrate as well as on the coating matrix. Ideally, a permanent covalent bond is created here, which significantly increases the adhesion of the coating to the substrate, thereby increasing its performance.

Adhesion improvement using BYK-4510

Control sample
2 %
BYK-4510
Aluminium
cross hatch adhesion
test with adhesive tape
Galvanized steelSteel

 

Schematic mechanism of adhesion promoters

Schematic mechanism of adhesion promoters
AdditiveApplications/bw/b
BYK‑4500(Wet) adhesion on aged coatings, (galvanized) steel, polyesters, ABS, improvement in flexibility, hardness, gloss
BYK‑4509Baking and two-pack systems on (galvanized) steel, aluminum, glass
BYK‑4510
BYK‑4511Two-pack epoxy systems on metal substrates
BYK‑4512Baking and two-pack systems on metal and glass
BYK‑4513Aqueous epoxy systems on metal substrates

s/b - solvent-borne
w/b - water-borne (aqueous)

   ->   recommended
AdditiveNon‑volatile matter [%]SolventAcid value
[mg/g]
Amine value
[mg/g]
Composition
BYK‑4500402,2,4-Trimethyl-1,3-
pentanediol-monoisobutyrate
-28High molecular-weight block copolymer
BYK‑450980Methoxypropanol2929neutralized BYK‑4510
BYK‑451080Methoxypropanol30-Hydroxy-functional copolymer with acidic groups
BYK‑451140Methoxypropylacetate-136Copolymer with functional groups
BYK‑451260Methoxypropylacetate-56Copolymer with functional groups
BYK‑451320Dipropylenglycol-monomethylether-60Copolymer with functional groups