How Dimer Becomes Parylene

Posted by Advanced Coating on Jan 9, 2023 11:42:40 AM

In many ways, the extensive benefits of parylene can be attributed to one thing: the dimer that helps form this conformal coating. This is especially true of GALXYL dimer--a particularly high-quality, reliable option. Here's how GALXYL dimer becomes parylene and why it's an effective choice for many coating projects.

A Look At GALYXL Dimer

Looking at GALYXL dimer is an excellent way to better understand parylene itself. That's because GALXYL is a unique type of dimer, providing specialized technical and chemical properties to the resulting coating. This means that learning about GALXYL dimer is a great opportunity to appreciate the full potential of parylene itself.

Here are a few key things to know about GALXYL before analyzing its journey to become parylene:


When it comes to GALXYL, understanding the different types of dimers available is crucial. Dimer C and dimer N are the two forms of GALXYL, each with its own unique properties and applications. Dimer C, for example, is ideal for use in military and defense applications due to its impressive approvals, while dimer N is better suited for medical applications due to its biocompatibility rating. By understanding the differences between these two forms, it is possible to choose the right one for the intended use and achieve optimal results.


The approvals and ratings for GALXYL dimer are a testament to its impressive technical capabilities. GALXYL type C, specifically, has MIL-I-46058C and IPC-CC-830 approval, making it an ideal choice for military and defense applications. This type of dimer is also known for its biocompatibility rating, as both types C and N have USP XXII, Class VI biocompatibility rating. This is particularly important for medical applications, as it indicates that the coating is safe for use in the human body. With these approvals and ratings, GALXYL dimer is a reliable and trusted choice for a variety of industries and applications.


The thinness of parylene is one of its defining features, and GALXYL dimer takes this characteristic to new heights. By using GALXYL dimer, it is possible to achieve a thickness range of 0.01 to 100 microns, making the coating even thinner and more lightweight than traditional parylene. In addition, the coating is free from pooling and cracks, ensuring a uniform coverage that is both aesthetically pleasing and functionally effective. The mechanical strength of the coating is also impressive, with GALXYL dimer providing enhanced resistance to bacterial and cryogenic conditions. Furthermore, the low permeability to gas and moisture makes it a reliable choice for a wide range of applications. Overall, GALXYL dimer is a game-changer for parylene coatings, providing an even more versatile and durable solution for a variety of industries and applications.


Parylene films created with GALXYL dimer are capable of coating, insulating, and protecting a huge variety of substrate surfaces. These films are often used in medical, military, and defense applications due to their impressive approvals and biocompatibility ratings. GALXYL dimer also affords unique properties that make this coating capable of withstanding extreme conditions, such as those in aerospace applications.

The GALXYL Dimer Journey

GALXYL dimer goes through an extensive journey to become the parylene coating necessary for significant projects and applications such as medical equipment protection. Here's a look at how this dimer becomes parylene:


In the beginning of the process, GALXYL is in its raw form--a thin, powder-like substance. The first step is to heat this raw dimer to 150 degrees Celsius. This process makes it possible to transform solid dimer into a gaseous form, but without passing through a liquid phase. The result is called "dimeric gas" and is formed by a bond between two parylene molecules.


The newly created dimeric gas is heated up to 700 degrees Celsius. At this point, the parylene molecules are separated, which results in a monomer vapor. This vapor is now ready to become coating.

Substrate Material Preparation

At this point, the substrate material must be prepared for the deposition process. This involves a careful cleaning, as contamination at any point or of any kind could interrupt the bond and potentially weaken the parylene coating.

Deposition and Polymerization

The substrate material or item is placed in a specialized container. This container is depressurized, creating a vacuum that moves the monomer vapor into the "deposition chamber." Here, room-temperature conditions allow the vapor to become a polymer, which sticks to the substrate material as a coating.

Waste Collection

As the deposition process occurs, excess vapor is created. Because this vapor doesn't become coating, it is considered a waste product. The vacuum in the deposition chamber brings this waste product into a "cold trap," which uses subzero temperatures to solidify the parylene. It can then be easily captured and disposed of.

In conclusion, GALXYL dimer is a particularly promising option for parylene because it offers unique properties and qualities. Its journey from dimer to finalized coating requires many steps, but the resulting bond is powerful, reliable, and protective.

Contact us today to learn more about GALXYL dimer and its ability to create uniquely beneficial parylene.