Optical Adhesives


Ultra Low Refractive Index UV Cured Adhesive for Optical Applications.



MY Polymers introduces a series of optically clear low refractive index UV curable adhesives of low to medium viscosities. All the adhesives are 100% solids. They are designed for bonding and encapsulation of optical components such as optical fibers, lenses, prisms and quartz windows.



MY-133 is a low viscosity UV cured adhesive which is characterized with an ultra low refractive index of 1.33 (in the cured state).

MY-133 was built especially to answer the need for a very low RI encapsulating material.

It cures to a clear low modulus solid that can be cured to a depth of a few millimeters by the action of radiation sources at 300-400nm.

It is useful as a coating material and for the encapsulation of various optical components such as optical fibers, light-guides, lenses and other components where the enhancement of total internal reflection is the issue. As a cladding material for fibers, it has the potential for the best available numerical aperture.
For more details see the Data Sheet for MY-133. For better adhesion special Primers may be used.

A non-UV curable material with the same low refractive index of 1.33 is available as a moisture curable MY-133MC. It is characterized with better adhesion and better mechanical strength than that of the UV curable version. See details in the Data Sheet for MY-133MC.

To achieve other properties, higher RI products with extremely good adhesion and mechanical properties are offered.

MY-145 to MY-147 series are tough UV curable acrylic-urethane materials which are characterized with a refractive index of 1.45 -1.47 (cured) and which can be supplied with a range of hardness from soft elastomeric gels to a high modulus and high Tg materials. All of which are characterized with very high adhesion to various substrates including glass, ceramics, oxides, metals and plastics. Typical properties can be seen in the Physical Properties of MY adhesives.


MY-142 is an intermediate product between MY-133 and MY-145 with a refractive index of 1.42. It has good adhesion to most substrates although not as good as the higher refractive index products.
Other refractive index UV adhesives (such as the ranges 1.33–1.40 and the range 1.42-1.50) are available on request and can be tailor made to suit specific applications in terms of viscosity, hardness and other mechanical properties.


MY Polymers works with the customers to better suit the adhesive to the substrate and to the application. The company shall use its expertise in the field to ensure successful use of the materials in terms of special surface preparations and methods of application and curing.

Please contact us for any special request and questions.

Samples are available. However, due to the need for a special preparation and expenses, there is a fee to the samples.
Please ask for a quotation.