Chemically, BRB Silanil® 919 is designated gamma aminopropyltriethoxysilane. Possessing both organic and inorganic reactivity, BRB Silanil® 919 can react with organic resins and elastomers aswell as with the surface of inorganic materials such as fiberglass and silica. This aminopropylfunctional silane is one of a series of organofunctional silane chemicals.


- Improves adhesion

- Increases composite strength properties

- Increased composite wet and dry tensile strength and modulus

- Increased composite wet and dry flexural strength and modulus

- Increased wet and dry compressive strength

- Increased transparency of fiberglass composites


- Good coupling agent to improve adhesion of many plastics, resins and elastomers

- Very useful for improving the properties of mineral filled rubber

- Proven additive for foundry resins

BRB Silanil® 919 is particularly recommended for fiberglass-reinforced phenolic, melamine, and epoxy thermoset composites, either as a fiberglass finish or as a resinous additive. Data suggests that this silane can also improve the performance of these types of thermoset resins when used as mineral binders in foundry and abrasive composite applications. When used as a resin additive, generally the silane is added at a level of 1 percent based on the weight of the resin solids. For each specific application, the optimum level of additive should be determined by testing several concentrations. When used as an additive to epoxy coating, BRB Silanil® 919 improves adhesion of the coating, particularly in very humid environments.

BRB Silanil® 919 has also been found to be an effective coupling agent for clay-reinforced elastomers such as natural and nitrile rubber. The silane-treated clay provides improvement in both physical and dynamic properties compared with similar cured elastomers containing untreated clay. BRB Silanil® 919 will also improve the adhesion of many coatings (urethanes, epoxies, phenolics, andothers) to glass and metal surfaces. Best performance is realized when BRB Silanil® 919 is used as a primer, although addition to the coating can also give benefits.

Premium grade silane blockbuster

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