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Frequently Asked Questions

Select a FAQ's Category:

General Oligomer

Q: How can I find out the cost and availability of Bomar® oligomers?

Please contact your local Dymax O&C Representative for pricing. Click here to see a complete list of authorized partners.

Q: What does REACH, RoHS, WEEE, DEHP, BPA, and GHS stand for?

All these acronyms stand for environmental compliance directives, regulations, and initiatives. Find out their meanings.

Q:My oligomer smells. Is it harmful?

The majority of people have a sense of smell that is acute and sensitive enough to detect odors in the parts per million (ppm). Ozone, for example, can be detected at concentrations as low as 0.01 ppm. However, it is not dangerous until the 8-hour time-weighted average (TWA) for the permissible exposure limit (PEL) of 0.1 ppm is exceeded.

On the other hand, isocyanates, which are used in many single and two-part polyurethanes have poor olfactory warning properties. This means that if a person detects its odor he has already exceeded the OSHA1 or ACGIH2 exposure limits. For example, one form of isocyanate, TDI’s (toluene 2, 4-diisocyanate) has a PEL of 0.02 ppm over an 8-hour TWA, and due to the chemical’s poor warning properties a person’s exposure would exceed this limit if an odor is detected.

In some situations when using a solvent-based product, such as one that contains methylene chloride, employers should establish safe use procedures that incorporate engineering controls and the use of personal protective equipment to minimize exposure. Even better would be to replace the solvent-based product with a solvent-free product. In the case of most solvent-containing materials, the nose will provide ample warning to an employee that an odor/exposure is detected, but it will not tell them if it’s harmful or if exposure limits have been exceeded.

The best way to learn more about a particular chemical or oligomer is to consult the material safety data sheet (MSDS). The nose should never be used to determine if a product is harmful.

Q:How can I obtain a product data sheet?

Product data sheets (PDS) are available for download on the PDS page. If your product is not listed, please contact Dymax O&C Application Engineering or fill out the PDS Request Form to request a copy.

Q:How can I obtain a Material Safety Data Sheet (MSDS)?

Please contact Dymax O&C Application Engineering or fill out the MSDS Request Form to request a copy.

Q: I don't see my product listed on your site. Why is that?

Dymax O&C has a vast offering of oligomer and coating formulations. We are only able to list a small portion of these formulations on the website, and have chosen the most popular to be represented.

Q:Do Bomar oligomers cure hard and tack free?

This depends on the specific oligomer. Some oligomers are designed to behave like a saft and flexible gasket or to retain tack on the surface.

Q: Can I still order a product that is no longer offered on the Dymax O&C website?

Yes. Dymax O&C has a vast offering of formulations. We are only able to list a small portion of these products on the website, and have chosen the most popular to be represented.

Q: Where can I find information on the chemical make-up of Dymax O&C products?

Please review the MSDS (Material Safety Data Sheet) for further details. Fill out the MSDS Request Form to obtain an MSDS.

Q: What wavelength is your refractive index measured at?

Dymax O&C measures refractive index at 520 nm, with a correction for temperature. Please contact Dymax O&C Application Engineering for additional details if needed.

Q: How long can an oligomer be exposed to UV light without curing?

Many Bomar oligomers cure very rapidly, even under low-intensity black lights. A window of only a few seconds at 0.5 mW/cm2 may be enough to start polymerization at the surface.

Q: Do your oligomers shrink when cured?

Most oligomers shrink slightly upon exposure to UV/visible light or heat.

Q: How can i find the glass transition temperature of your oligomers?

This depends on the specific material. Not all formulations have been measured. If the specific resin has been measured, the value is reported on the product data sheet.

Q: Do you have any oligomers suitable for dissimilar substrates?

Yes. Dymax O&C has a library of formulations. Most of the formulations were designed to bond unique and specific groups of substrates.

Q: Do you have any adhesion promoters?

Yes. Dymax does have primers available. Please contact Dymax Application Engineering for help selecting the best primer for your application.


FAQ's: Curing and Removal of Oligomers

Q: In shadowed areas, can Bomar oligomers cure if they are not directly exposed to light?

Yes. Dymax Multi-Cure® and Dual-Cure materials have secondary cure mechanisms to cure in applications were direct exposure to light is not possible for the entire application area. Multi-Cure products have a secondary heat cure while Dual-Cure products cure with moisture over time. Other products need light exposure to cure.

Q: How can I dissolve or remove cured oligomers?

The most common methods of removing Dymax O&C light-curable materials are chemical exposure or exposure to elevated temperatures.

Q: Can Bomar oligomers be used with equipment from other companies?

Dymax O&C has designed it's curing equipment product offerings to ensure that customer processes using out chemistries are optimized.

Q: Do your oligomers expand or contract while curing?

Dymax O&C light-curing oligomers shrink during cure. Shrinkage rate is dependent on the cure method and the formulation itself - Dymax has materials that shrink less than 0.1% on cure. Linear shrinkage data is available on each PDS. Slow, low-intensity cures will reduce shrinkage rates of the light-curable material.

Q: How long should I cure the oligomer?

It depends on the application parameters. Cure time is influenced by variables including spectral output of the lamp, lamp intensity, distance of the lamp to the bond area, cure speed of the material, and light transmission of substrates around the oligomer. Most applications require cure times of seconds under medium or high intensity UV/visible light.


FAQ's: Oligomer Packages, Storage, & Handling

Q: What is the best way to store Bomar oligomers?

Most Dymax oligomers have a one-year shelf life when stored between 10°C [50°F] and 32°C [90°F] in the original, unopened container. Best practices include keeping the material covered and in a cool, dark place when not in use. Some materials may polymerize upon prolonged exposure to ambient and artificial light.

Q: At what temperatures should Bomar oligomers be stored?

Most Dymax materials have a one-year shelf life when stored between 10°C [50°F] and 32°C [90°F] in the original, unopened container. Best practices include keeping the material covered and in a cool, dark place when not in use. Some materials may polymerize upon prolonged exposure to ambient and artificial light.

Q: What is the shelf-life of Dymax oligomers?

Most Dymax materials have a one-year shelf life when stored between 10°C [50°F] and 32°C [90°F] in the original, unopened container. Best practices include keeping the material covered and in a cool, dark place when not in use. Some materials may polymerize upon prolonged exposure to ambient and artificial light.

Q: What package sizes are available for Bomar oligomers?

Bomar oligomers are available in 5 gallon pails, 55 gallon drums, and 275 gallon totes.