Epoxy Silane Coupling Agent Polymer Crosile® AK200 as water-based Adhesion Promoter

Crosile® AK200 Silane is an epoxy-functional silane used as an adhesion promoter and crosslinker in water-based acrylic, epoxy, and polyurethane systems.

It enhances adhesion to metal, glass, ceramic, and concrete surfaces, improving coating durability and bonding strength.

Item NO.:
Crosile® AK200

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Epoxy Silane Coupling Agent Polymer Crosile® AK200 as water-based Adhesion Promoter

Product Description

Crosile AK-200 is a light-yellow, low-viscosity silane polymer containing epoxy functional groups

Slowly dissolves and activates in acidic media (pH ≈ 4)
Epoxy groups react with resins and inorganic substrates (metal, glass, ceramics, concrete) to form strong covalent bonds, markedly improving adhesion
Suitable for water-borne or water-solvent hybrid acrylic, epoxy and polyurethane systems, as well as for pigment dispersions and filler pre-treatment

Typical Properties

Properties	Typical Value	Test Method
Ash content （as SiO2),%	54 % ± 2 %	GB/T 5009
Density (20℃,g/cm3, )	1.15-1.17	GB/T 4472
Viscosity (25℃), mPas )	30-60	GB/T 265
Epoxy Value mequiv g⁻ ¹	4.5-4.8	GB/T 1677
Flash Point ℃	>115℃	GB/T 261

Epoxy silane polymer Features & Application

Water-borne or water-solvent acrylic, epoxy and polyurethane systems
Primers for metal, glass, ceramics and concrete
Pigment dispersion and filler pre-treatment
Wood coatings, shop primers

Directions for Use

Pre-dilution: mix 1 part Crosile AK-200 with 1–3 parts of ethylene glycol butyl ether, IPA or PH ≈ 4 acidified water (adjusted with citric/acetic acid) under slow agitation until uniform.
Dosage: 0.3 – 1 % of total formula solids (resin + pigment + filler); over-dosage mayv impair properties—optimize by ladder study.
Addition: incorporate during grinding or let-down; disperse fully and age the finished formulation for 2 – 3 days before application

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